From 0ea86963fc66a68f3bfdb803bcd16a374e333840 Mon Sep 17 00:00:00 2001
From: NSAmelchev <namelchev@apache.org>
Date: Thu, 8 Oct 2026 19:34:47 +0300
Subject: [PATCH 1/4] IGNITE-29122 Fix javac and javadoc warnings in the build
 log

---
 .../query/calcite/exec/exp/ExpressionFactory.java      |  2 +-
 .../query/calcite/exec/exp/IgniteSqlFunctions.java     |  6 +++---
 .../query/calcite/prepare/FieldsMetadata.java          |  2 +-
 .../calcite/sql/fun/IgniteOwnSqlOperatorTable.java     |  2 +-
 .../query/calcite/integration/PartitionPruneTest.java  |  2 +-
 .../internal/thread/context/OperationContext.java      |  4 ++--
 .../org/apache/ignite/internal/util/CommonUtils.java   |  2 +-
 .../org/apache/ignite/internal/util/typedef/X.java     |  6 +++---
 .../main/java/org/jsr166/ConcurrentLinkedHashMap.java  |  2 +-
 .../ignite/internal/commandline/CommandHandler.java    |  4 ++--
 .../org/apache/ignite/util/GridCommandHandlerTest.java |  2 +-
 .../core/src/main/java/org/apache/ignite/Ignite.java   |  1 +
 .../src/main/java/org/apache/ignite/IgniteCache.java   |  1 +
 .../java/org/apache/ignite/IgniteSystemProperties.java |  1 +
 .../ignite/configuration/IgniteConfiguration.java      |  1 +
 .../ignite/configuration/TransactionConfiguration.java |  1 +
 .../index/sorted/inline/InlineObjectBytesDetector.java |  2 +-
 .../index/sorted/inline/types/DateValueUtils.java      |  2 +-
 .../internal/processors/cache/IgniteCacheProxy.java    |  2 +-
 .../processors/cache/IgniteCacheProxyImpl.java         |  2 +-
 .../internal/processors/cache/IgniteInternalCache.java |  6 +++---
 .../processors/cache/PartitionUpdateCounter.java       |  2 +-
 .../ignite/internal/processors/cache/package-info.java |  2 +-
 .../processors/cache/persistence/StorageException.java |  2 +-
 .../internal/processors/cache/query/CacheQuery.java    |  3 ++-
 .../processors/odbc/jdbc/JdbcBulkLoadProcessor.java    |  4 ++--
 .../processors/query/running/HeavyQueriesTracker.java  |  4 ++--
 .../processors/query/running/SqlQueryMXBean.java       |  4 ++--
 .../processors/query/stat/StatisticsProcessor.java     |  2 +-
 .../stat/hll/serialization/SerializationUtil.java      |  2 +-
 .../internal/util/GridConcurrentMultiPairQueue.java    |  6 +++---
 .../org/apache/ignite/internal/util/IgniteUtils.java   |  2 +-
 .../store/IgniteCacheExpiryStoreLoadSelfTest.java      |  8 ++++----
 .../java/org/apache/ignite/client/ConnectionTest.java  |  2 +-
 .../cache/GridCacheFastNodeLeftForTransactionTest.java |  2 +-
 .../db/wal/WalDeletionArchiveAbstractTest.java         |  4 +---
 .../snapshot/IgniteClusterSnapshotStreamerTest.java    |  2 +-
 .../snapshot/dump/IgniteCacheDumpSelfTest.java         |  2 +-
 .../utils/IgniteWalConverterArgumentsTest.java         |  2 +-
 .../processors/query/h2/sys/view/SystemViewLocal.java  |  2 +-
 .../query/h2/sql/BaseH2CompareQueryTest.java           |  2 +-
 .../processors/query/stat/StatisticsAbstractTest.java  |  2 +-
 .../protocols/http/jetty/GridJettyRestHandler.java     | 10 +++++-----
 .../src/main/java/org/apache/ignite/tools/junit/X.java |  6 +++---
 44 files changed, 67 insertions(+), 63 deletions(-)

diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/ExpressionFactory.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/ExpressionFactory.java
index 3fe58949d01e8..ecdccedd49e9a 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/ExpressionFactory.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/ExpressionFactory.java
@@ -60,7 +60,7 @@ Supplier<List<AccumulatorWrapper<Row>>> accumulatorsFactory(
      *
      * @param left Collations of left row.
      * @param right Collations of right row.
-     * @param allowNulls Matching null fields. Usually, NULL <> NULL in SQL. Except IS DISTINCT / IS NOT DISTINCT.
+     * @param allowNulls Matching null fields. Usually, {@code NULL <> NULL} in SQL. Except IS DISTINCT / IS NOT DISTINCT.
      * @return Rows comparator.
      */
     Comparator<Row> comparator(
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/IgniteSqlFunctions.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/IgniteSqlFunctions.java
index be9dc99330df0..d8766ca51e9b1 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/IgniteSqlFunctions.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/IgniteSqlFunctions.java
@@ -311,7 +311,7 @@ public static boolean gtAny(Object a, Object b) {
         return SqlFunctions.gtAny(a, b);
     }
 
-    /** SQL <=. */
+    /** SQL {@code <=}. */
     public static boolean leAny(Object a, Object b) {
         if (Commons.isBinaryComparable(a, b))
             return Commons.compareBinary(a, b) <= 0;
@@ -319,7 +319,7 @@ public static boolean leAny(Object a, Object b) {
         return SqlFunctions.leAny(a, b);
     }
 
-    /** SQL <. */
+    /** SQL {@code <}. */
     public static boolean ltAny(Object a, Object b) {
         if (Commons.isBinaryComparable(a, b))
             return Commons.compareBinary(a, b) < 0;
@@ -335,7 +335,7 @@ public static boolean eqAny(Object a, Object b) {
         return SqlFunctions.eqAny(a, b);
     }
 
-    /** SQL <>. */
+    /** SQL {@code <>}. */
     public static boolean neAny(Object a, Object b) {
         if (Commons.isBinaryComparable(a, b))
             return Commons.compareBinary(a, b) != 0;
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FieldsMetadata.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FieldsMetadata.java
index 5164878d4d564..d6fa831b4fe48 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FieldsMetadata.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/prepare/FieldsMetadata.java
@@ -33,7 +33,7 @@ public interface FieldsMetadata {
 
     /**
      * @param typeFactory Type factory.
-     * @return Query field descriptors collection&
+     * @return Query field descriptors collection.
      */
     List<GridQueryFieldMetadata> queryFieldsMetadata(IgniteTypeFactory typeFactory);
 }
diff --git a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/sql/fun/IgniteOwnSqlOperatorTable.java b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/sql/fun/IgniteOwnSqlOperatorTable.java
index d5a7dd434e332..be4f7d05d05cb 100644
--- a/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/sql/fun/IgniteOwnSqlOperatorTable.java
+++ b/modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/sql/fun/IgniteOwnSqlOperatorTable.java
@@ -126,7 +126,7 @@ public class IgniteOwnSqlOperatorTable extends ReflectiveSqlOperatorTable {
             OperandTypes.SAME_SAME,
             SqlFunctionCategory.SYSTEM);
 
-    /** Bitwise '&' of two values. */
+    /** Bitwise {@code &} of two values. */
     public static final SqlFunction BITAND =
         new SqlFunction(
             "BITAND",
diff --git a/modules/calcite/src/test/java/org/apache/ignite/internal/processors/query/calcite/integration/PartitionPruneTest.java b/modules/calcite/src/test/java/org/apache/ignite/internal/processors/query/calcite/integration/PartitionPruneTest.java
index 4b363c76abc56..e79fc4757c862 100644
--- a/modules/calcite/src/test/java/org/apache/ignite/internal/processors/query/calcite/integration/PartitionPruneTest.java
+++ b/modules/calcite/src/test/java/org/apache/ignite/internal/processors/query/calcite/integration/PartitionPruneTest.java
@@ -436,7 +436,7 @@ private void testSelect(int sz, boolean withIn, String column) {
                     res.stream().map(row -> row.get(0)).sorted().collect(Collectors.toList())
                 );
             },
-            IntStream.of(values).boxed().toArray(Integer[]::new));
+            IntStream.of(values).boxed().toArray());
     }
 
     /** */
diff --git a/modules/commons/src/main/java/org/apache/ignite/internal/thread/context/OperationContext.java b/modules/commons/src/main/java/org/apache/ignite/internal/thread/context/OperationContext.java
index 2b98393d25d19..fa340ce2b4f91 100644
--- a/modules/commons/src/main/java/org/apache/ignite/internal/thread/context/OperationContext.java
+++ b/modules/commons/src/main/java/org/apache/ignite/internal/thread/context/OperationContext.java
@@ -31,13 +31,13 @@
  * Represents a storage of {@link OperationContextAttribute}s and their corresponding values bound to the JVM thread.
  * The state of {@link OperationContext} is determined by a sequence of {@link Update}s applied to it. Each Update
  * stores the updated or newly added {@link OperationContextAttribute} values and link to the previous Update.
- * <pre>
+ * <pre>{@code
  *         +-----------+   +-----------+
  *         |           |   | A1 -> V2  |
  * null <--| A1 -> V1  |<--|           |
  *         |           |   | A2 -> V3  |
  *         +-----------+   +-----------+
- *</pre>
+ * }</pre>
  * {@link OperationContext} Updates can be undone in the same order they were applied by closing the {@link Scope}
  * associated with each update (see {@link #set(OperationContextAttribute, Object)} and related methods).
  *<p>
diff --git a/modules/commons/src/main/java/org/apache/ignite/internal/util/CommonUtils.java b/modules/commons/src/main/java/org/apache/ignite/internal/util/CommonUtils.java
index cb2c770007fa3..e28d00314c4df 100644
--- a/modules/commons/src/main/java/org/apache/ignite/internal/util/CommonUtils.java
+++ b/modules/commons/src/main/java/org/apache/ignite/internal/util/CommonUtils.java
@@ -1259,7 +1259,7 @@ public static void quiet(boolean err, Object... objs) {
     public static void quietMultipleLines(boolean err, String multiline) {
         assert multiline != null;
 
-        quiet(err, multiline.split(NL));
+        quiet(err, (Object[])multiline.split(NL));
     }
 
     /**
diff --git a/modules/commons/src/main/java/org/apache/ignite/internal/util/typedef/X.java b/modules/commons/src/main/java/org/apache/ignite/internal/util/typedef/X.java
index 3b2cc43bee852..b3b613d086d42 100644
--- a/modules/commons/src/main/java/org/apache/ignite/internal/util/typedef/X.java
+++ b/modules/commons/src/main/java/org/apache/ignite/internal/util/typedef/X.java
@@ -92,7 +92,7 @@ public final class X {
         Method causeMtd;
 
         try {
-            causeMtd = Throwable.class.getMethod("getCause", null);
+            causeMtd = Throwable.class.getMethod("getCause");
         }
         catch (Exception ignored) {
             causeMtd = null;
@@ -615,7 +615,7 @@ private static Throwable getCauseUsingMethodName(Throwable throwable, String mtd
         Method mtd = null;
 
         try {
-            mtd = throwable.getClass().getMethod(mtdName, null);
+            mtd = throwable.getClass().getMethod(mtdName);
         }
         catch (NoSuchMethodException | SecurityException ignored) {
             // exception ignored
@@ -694,7 +694,7 @@ public static boolean isNestedThrowable(Throwable throwable) {
         Class<?> cls = throwable.getClass();
         for (String CAUSE_MTD_NAME : CAUSE_MTD_NAMES) {
             try {
-                Method mtd = cls.getMethod(CAUSE_MTD_NAME, null);
+                Method mtd = cls.getMethod(CAUSE_MTD_NAME);
 
                 if (mtd != null && Throwable.class.isAssignableFrom(mtd.getReturnType()))
                     return true;
diff --git a/modules/commons/src/main/java/org/jsr166/ConcurrentLinkedHashMap.java b/modules/commons/src/main/java/org/jsr166/ConcurrentLinkedHashMap.java
index 1c09c21806773..ab0700cb41f19 100644
--- a/modules/commons/src/main/java/org/jsr166/ConcurrentLinkedHashMap.java
+++ b/modules/commons/src/main/java/org/jsr166/ConcurrentLinkedHashMap.java
@@ -140,7 +140,7 @@ public class ConcurrentLinkedHashMap<K, V> extends AbstractMap<K, V> implements
     /**
      * The maximum capacity, used if a higher value is implicitly
      * specified by either of the constructors with arguments.  MUST
-     * be a power of two <= 1<<30 to ensure that entries are indexable
+     * be a power of two {@code <= 1<<30} to ensure that entries are indexable
      * using ints.
      */
     public static final int MAX_CAP_LIMIT = 1 << 30;
diff --git a/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java b/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java
index 4d7230eb0a6ab..ce9e31c46df23 100644
--- a/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java
+++ b/modules/control-utility/src/main/java/org/apache/ignite/internal/commandline/CommandHandler.java
@@ -608,7 +608,7 @@ private void printHelp(List<String> rawArgs) {
         logger.info("");
 
         logger.info(INDENT + join(" ",
-            join(" ", UTILITY_NAME, join(" ", new ArgumentParser(logger, registry, null).getCommonOptions())),
+            join(" ", UTILITY_NAME, join(" ", (Object[])new ArgumentParser(logger, registry, null).getCommonOptions())),
             asOptional("command", true), "<command_parameters>"));
         logger.info("");
         logger.info("");
@@ -674,7 +674,7 @@ private void printCacheHelpHeader(IgniteLogger logger) {
         logger.info(INDENT + "The '--cache subcommand' is used to get information about and perform actions" +
             " with caches. The command has the following syntax:");
         logger.info("");
-        logger.info(INDENT + join(" ", UTILITY_NAME, join(" ", new ArgumentParser(logger, null, null).getCommonOptions())) +
+        logger.info(INDENT + join(" ", UTILITY_NAME, join(" ", (Object[])new ArgumentParser(logger, null, null).getCommonOptions())) +
             " --cache [subcommand] <subcommand_parameters>");
         logger.info("");
         logger.info(INDENT + "The subcommands that take [nodeId] as an argument ('list', 'find_garbage', " +
diff --git a/modules/control-utility/src/test/java/org/apache/ignite/util/GridCommandHandlerTest.java b/modules/control-utility/src/test/java/org/apache/ignite/util/GridCommandHandlerTest.java
index b5f2659b1fa0b..2630f58ee4304 100644
--- a/modules/control-utility/src/test/java/org/apache/ignite/util/GridCommandHandlerTest.java
+++ b/modules/control-utility/src/test/java/org/apache/ignite/util/GridCommandHandlerTest.java
@@ -1756,7 +1756,7 @@ public void testKillHangingRemoteTransactions() throws Exception {
                     if (id != 0)
                         U.awaitQuiet(lockLatch);
 
-                    cache.invoke(0L, new IncrementClosure(), null);
+                    cache.invoke(0L, new IncrementClosure());
 
                     if (id == 0) {
                         lockLatch.countDown();
diff --git a/modules/core/src/main/java/org/apache/ignite/Ignite.java b/modules/core/src/main/java/org/apache/ignite/Ignite.java
index f49dbbd14da36..5dbc48c5ac747 100644
--- a/modules/core/src/main/java/org/apache/ignite/Ignite.java
+++ b/modules/core/src/main/java/org/apache/ignite/Ignite.java
@@ -753,6 +753,7 @@ public <T> IgniteQueue<T> queue(String name, int cap, @Nullable CollectionConfig
      * @return Collection of {@link DataRegionMetrics} snapshots.
      * @deprecated Check the {@link ReadOnlyMetricRegistry} with "name=io.dataregion.{data_region_name}" instead.
      */
+    @Deprecated
     public Collection<DataRegionMetrics> dataRegionMetrics();
 
     /**
diff --git a/modules/core/src/main/java/org/apache/ignite/IgniteCache.java b/modules/core/src/main/java/org/apache/ignite/IgniteCache.java
index da39381ff47b0..718c24f441ab5 100644
--- a/modules/core/src/main/java/org/apache/ignite/IgniteCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/IgniteCache.java
@@ -399,6 +399,7 @@ public IgniteFuture<Void> localLoadCacheAsync(@Nullable IgniteBiPredicate<K, V>
      * @deprecated It is recommended to use {@link Ignite#reentrantLock(String, boolean, boolean, boolean)} instead.
      *      This method will be removed in future releases.
      */
+    @Deprecated
     public Lock lockAll(Collection<? extends K> keys);
 
     /**
diff --git a/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java b/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java
index da5fb38349cdb..611195665f10b 100644
--- a/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java
+++ b/modules/core/src/main/java/org/apache/ignite/IgniteSystemProperties.java
@@ -1212,6 +1212,7 @@ public final class IgniteSystemProperties extends IgniteCommonsSystemProperties
      *
      * @deprecated Use {@link DataStorageConfiguration#setMinWalArchiveSize}.
      */
+    @Deprecated
     @SystemProperty(value = "Property for setup percentage of WAL archive size to calculate threshold since which " +
         "removing of old archive should be started", type = Double.class)
     public static final String IGNITE_THRESHOLD_WAL_ARCHIVE_SIZE_PERCENTAGE =
diff --git a/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java b/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java
index 244a54c9470ca..f39d792f924be 100644
--- a/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/configuration/IgniteConfiguration.java
@@ -2444,6 +2444,7 @@ public IgniteConfiguration setTracingSpi(TracingSpi tracingSpi) {
      * @deprecated The Ignite Tracing is deprecated and subject to removal in a future release. Ignite Tracing has been
      * retired in favor of Ignite Performance Statistics and Ignite Metrics.
      */
+    @Deprecated(forRemoval = true)
     public TracingSpi getTracingSpi() {
         return NoopTracingSpi.INSTANCE;
     }
diff --git a/modules/core/src/main/java/org/apache/ignite/configuration/TransactionConfiguration.java b/modules/core/src/main/java/org/apache/ignite/configuration/TransactionConfiguration.java
index a231f4796907f..44668ad6aeb82 100644
--- a/modules/core/src/main/java/org/apache/ignite/configuration/TransactionConfiguration.java
+++ b/modules/core/src/main/java/org/apache/ignite/configuration/TransactionConfiguration.java
@@ -59,6 +59,7 @@ public class TransactionConfiguration implements Serializable {
       * Default size of pessimistic transactions log.
       * @deprecated Pessimistic tx log linger property has no effect.
       */
+    @Deprecated
     public static final int DFLT_PESSIMISTIC_TX_LOG_LINGER = 10_000;
 
     /** Default transaction serializable flag. */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineObjectBytesDetector.java b/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineObjectBytesDetector.java
index d10140c99ee1d..3d44552676220 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineObjectBytesDetector.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/InlineObjectBytesDetector.java
@@ -167,7 +167,7 @@ public boolean inlineObjectSupported() {
 
     /**
      * Static analyze inline_size and inline columns set.
-     * e.g.: indexed: (long, obj) and inline_size < 12.
+     * e.g.: indexed: (long, obj) and {@code inline_size < 12}.
      * In this case there is no space for inline object.
      *
      * @param keyDefs Index key definition.
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/types/DateValueUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/types/DateValueUtils.java
index 49d5a87a81dc3..053382a265303 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/types/DateValueUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/cache/query/index/sorted/inline/types/DateValueUtils.java
@@ -31,7 +31,7 @@
 /**
  * DateValue is a representation of a date in bit form:
  *
- * dv = (year << SHIFT_YEAR) | (month << SHIFT_MONTH) | day.
+ * {@code dv = (year << SHIFT_YEAR) | (month << SHIFT_MONTH) | day}.
  */
 public class DateValueUtils {
     /** Calendar with UTC time zone instance. */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
index 92971485a507f..32e5279e48f67 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxy.java
@@ -63,7 +63,7 @@ public interface IgniteCacheProxy<K, V> extends IgniteCache<K, V>, Externalizabl
      * <p> For example, if you use {@link Integer} as a key and {@code Value} class as a value (which will be
      * stored in binary format), you should acquire following projection to avoid deserialization:
      * <pre>
-     * IgniteInternalCache<Integer, GridBinaryObject> prj = cache.keepBinary();
+     * IgniteInternalCache&lt;Integer, GridBinaryObject&gt; prj = cache.keepBinary();
      *
      * // Value is not deserialized and returned in binary format.
      * GridBinaryObject po = prj.get(1);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxyImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxyImpl.java
index 50e71d5807ebf..156380c2985dd 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxyImpl.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteCacheProxyImpl.java
@@ -1984,7 +1984,7 @@ else if (clazz.isAssignableFrom(IgniteEx.class)) {
      * <p> For example, if you use {@link Integer} as a key and {@code Value} class as a value (which will be
      * stored in binary format), you should acquire following projection to avoid deserialization:
      * <pre>
-     * IgniteInternalCache<Integer, GridBinaryObject> prj = cache.keepBinary();
+     * IgniteInternalCache&lt;Integer, GridBinaryObject&gt; prj = cache.keepBinary();
      *
      * // Value is not deserialized and returned in binary format.
      * GridBinaryObject po = prj.get(1);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteInternalCache.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteInternalCache.java
index f98849c6761fa..925ac9c3bf511 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteInternalCache.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/IgniteInternalCache.java
@@ -180,7 +180,7 @@
  * that class definitions are present in the classpath). By default, cache works with deserialized form
  * (example shows the case when {@link Integer} is used as a key for a binary object):
  * <pre>
- * IgniteInternalCache<Integer, Value> prj = Ignition.grid().cache(null);
+ * IgniteInternalCache&lt;Integer, Value&gt; prj = Ignition.grid().cache(null);
  *
  * // Value will be serialized and stored in cache in binary format.
  * prj.put(1, new Value());
@@ -193,7 +193,7 @@
  * needed for performance reasons. To work with binary format directly you should create special projection
  * using {@link #keepBinary()} method:
  * <pre>
- * IgniteInternalCache<Integer, GridBinaryObject> prj = Ignition.grid().cache(null).keepBinary();
+ * IgniteInternalCache&lt;Integer, GridBinaryObject&gt; prj = Ignition.grid().cache(null).keepBinary();
  *
  * // Value is not deserialized and returned in binary format.
  * GridBinaryObject po = prj.get(1);
@@ -258,7 +258,7 @@ public interface IgniteInternalCache<K, V> extends Iterable<Cache.Entry<K, V>> {
      * (which will be stored in binary format), you should acquire following projection
      * to avoid deserialization:
      * <pre>
-     * IgniteInternalCache<Integer, GridBinaryObject> prj = cache.keepBinary();
+     * IgniteInternalCache&lt;Integer, GridBinaryObject&gt; prj = cache.keepBinary();
      *
      * // Value is not deserialized and returned in binary format.
      * GridBinaryObject po = prj.get(1);
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/PartitionUpdateCounter.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/PartitionUpdateCounter.java
index 2475770b6ca7b..8a08fcf14fd17 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/PartitionUpdateCounter.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/PartitionUpdateCounter.java
@@ -98,7 +98,7 @@ public interface PartitionUpdateCounter extends Iterable<long[]> {
     /**
      * Applies counter update out of range. Update ranges must not intersect.
      *
-     * @param start Start (<= lwm).
+     * @param start Start ({@code <= lwm}).
      * @param delta Delta.
      * @return {@code True} if update was actually applied.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/package-info.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/package-info.java
index b7e27a7b20db8..9ba189d71bb41 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/package-info.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/package-info.java
@@ -16,7 +16,7 @@
  */
 
 /**
- * This package contain cache-related processors & persistence implementation. <br>
+ * This package contain cache-related processors and persistence implementation. <br>
  * See also <a href="
  * https://github.com/apache/ignite/tree/master/modules/core/src/main/java/org/apache/ignite/internal/processors/cache">
  * GitHub Package Readme</a>
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/StorageException.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/StorageException.java
index 509dee6264d64..cc605ede81971 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/StorageException.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/persistence/StorageException.java
@@ -23,7 +23,7 @@
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Exception is needed to distinguish WAL manager & page store critical I/O errors.
+ * Exception is needed to distinguish WAL manager and page store critical I/O errors.
  */
 public class StorageException extends IgniteCheckedException implements InvalidEnvironmentException {
     /** */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/CacheQuery.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/CacheQuery.java
index e9cfcb2fd82b4..ed2e26c90b237 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/CacheQuery.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/query/CacheQuery.java
@@ -231,7 +231,8 @@
  *     new org.locationtech.jts.geom.Coordinate(0, 0)
  * });
  *
- * Map.Entry<String, UserData> records = cache.queries().createSqlQuery(MapPoint.class, "select * from MapPoint where location && ?")
+ * Map.Entry&lt;String, UserData&gt; records = cache.queries()
+ *     .createSqlQuery(MapPoint.class, "select * from MapPoint where location &amp;&amp; ?")
  *     .queryArguments(square)
  *     .execute()
  *     .get();
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcBulkLoadProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcBulkLoadProcessor.java
index d8c229c41ada4..7d915300b7f3b 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcBulkLoadProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcBulkLoadProcessor.java
@@ -33,7 +33,7 @@
  * Unlike other "single shot" request-reply commands, the
  * COPY command the client-server interaction looks like this:
  *
- * <pre>
+ * <pre>{@code
  * Thin JDBC client                            Server
  *        |                                       |
  *        |------- JdbcQueryExecuteRequest ------>|
@@ -66,7 +66,7 @@
  *        |                                       |
  * (close the file)                               |
  *        |                                       |
- * </pre>
+ * }</pre>
  *
  * In case of input file reading error, a flag is carried to the server:
  * {@link JdbcBulkLoadBatchRequest#CMD_FINISHED_ERROR} and the processing
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/HeavyQueriesTracker.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/HeavyQueriesTracker.java
index 72ca9731ecf5a..d05f5fb3b19c4 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/HeavyQueriesTracker.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/HeavyQueriesTracker.java
@@ -204,7 +204,7 @@ public int getTimeoutMultiplier() {
      * - timeout * multiplier;
      * - timeout * multiplier * multiplier;
      * - etc...
-     * If the multiplier <= 1, the warning message is printed once.
+     * If the multiplier {@code <= 1}, the warning message is printed once.
      *
      * @param timeoutMult Long query timeout multiplier.
      */
@@ -237,7 +237,7 @@ public void setResultSetSizeThreshold(long rsSizeThreshold) {
      *  - size of result set > threshold * multiplier;
      *  - size of result set > threshold * multiplier * multiplier;
      *  - etc.
-     * If the multiplier <= 1, the warning message is printed once.
+     * If the multiplier {@code <= 1}, the warning message is printed once.
      * @return Result set size threshold multiplier.
      */
     public int getResultSetSizeThresholdMultiplier() {
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/SqlQueryMXBean.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/SqlQueryMXBean.java
index 06233e657439f..d077b6eea6dd8 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/SqlQueryMXBean.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/SqlQueryMXBean.java
@@ -63,7 +63,7 @@ void setLongQueryWarningTimeout(
      *      - timeout * multiplier;
      *      - timeout * multiplier * multiplier;
      *      - etc.
-     * If the multiplier <= 1, the warning message is printed once.
+     * If the multiplier {@code <= 1}, the warning message is printed once.
      *
      * @param longQueryTimeoutMultiplier Long query timeout multiplier.
      */
@@ -102,7 +102,7 @@ void setLongQueryWarningTimeout(
      *  - size of result set > threshold * multiplier;
      *  - size of result set > threshold * multiplier * multiplier;
      *  - etc.
-     * If the multiplier <= 1, the warning message is printed once during query execution and the next one on the query end.
+     * If the multiplier {@code <= 1}, the warning message is printed once during query execution and the next one on the query end.
      *
      * @return Result set size threshold multiplier.
      */
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/StatisticsProcessor.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/StatisticsProcessor.java
index 7e662e6d29da1..7bef91372e632 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/StatisticsProcessor.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/StatisticsProcessor.java
@@ -84,7 +84,7 @@ public StatisticsProcessor(
      * 2) If byObsolescence and no table awailable - clean obsolescence and partition statistics for the given key.
      * 3) Submit tasks for each specified partition.
      * 4) after last task finish gathering - it starts aggregation.
-     * 5) read all partitions & obsolescence from repo and
+     * 5) read all partitions and obsolescence from repo and
      * if byObsolescence = {@code true} - remove unnecessary one and aggregate by specified list
      * if byObsolescence = {@code false} - aggregate all presented in store (because it should contains only actual ones)
      * 5) save aggregated local statistics
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SerializationUtil.java b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SerializationUtil.java
index 211593d59ff72..7ee30d89cbb8e 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SerializationUtil.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/processors/query/stat/hll/serialization/SerializationUtil.java
@@ -173,7 +173,7 @@ public static byte packVersionByte(final int schemaVersion, final int typeOrdina
      *             If 'auto' is chosen, this value should be <code>63</code>.
      *           </li>
      *           <li>
-     *             If a cutoff of 2<sup>n</sup> is desired, for <code>0 <= n < 31</code>,
+     *             If a cutoff of 2<sup>n</sup> is desired, for {@code 0 <= n < 31},
      *             this value should be <code>n + 1</code>.
      *           </li>
      *         </ul>
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentMultiPairQueue.java b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentMultiPairQueue.java
index dcc637efeeaf8..1bbb19aa315a3 100644
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentMultiPairQueue.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/GridConcurrentMultiPairQueue.java
@@ -29,9 +29,9 @@
  * Concurrent queue that wraps collection of {@code Pair<K, V[]>}
  * The only garantee {@link #next} provided is sequentially emptify values per key array.
  * i.e. input like: <br>
- * p1 = new Pair<1, [1, 3, 5, 7]> <br>
- * p2 = new Pair<2, [2, 3]> <br>
- * p3 = new Pair<3, [200, 100]> <br>
+ * {@code p1 = new Pair<1, [1, 3, 5, 7]>} <br>
+ * {@code p2 = new Pair<2, [2, 3]>} <br>
+ * {@code p3 = new Pair<3, [200, 100]>} <br>
  * and further sequence of {@code poll} or {@code forEach} calls may produce output like: <br>
  * [3, 200], [3, 100], [1, 1], [1, 3], [1, 5], [1, 7], [2, 2], [2, 3]
  *
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
index 5b87447a84813..40779934a03ad 100755
--- a/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
+++ b/modules/core/src/main/java/org/apache/ignite/internal/util/IgniteUtils.java
@@ -2230,7 +2230,7 @@ public static <T> Iterable<T> asIterable(final Enumeration<T> e) {
     }
 
     /**
-     * Copy source file (or folder) to destination file (or folder). Supported source & destination:
+     * Copy source file (or folder) to destination file (or folder). Supported source and destination:
      * <ul>
      * <li>File to File</li>
      * <li>File to Folder</li>
diff --git a/modules/core/src/test/java/org/apache/ignite/cache/store/IgniteCacheExpiryStoreLoadSelfTest.java b/modules/core/src/test/java/org/apache/ignite/cache/store/IgniteCacheExpiryStoreLoadSelfTest.java
index a5fbe821f4b45..578503905f5ce 100644
--- a/modules/core/src/test/java/org/apache/ignite/cache/store/IgniteCacheExpiryStoreLoadSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/cache/store/IgniteCacheExpiryStoreLoadSelfTest.java
@@ -108,9 +108,9 @@ private void checkLoad(boolean async) throws Exception {
         keys.add(primaryKey(jcache(2)));
 
         if (async)
-            cache.loadCacheAsync(null, keys.toArray(new Integer[3])).get();
+            cache.loadCacheAsync(null, keys.toArray()).get();
         else
-            cache.loadCache(null, keys.toArray(new Integer[3]));
+            cache.loadCache(null, keys.toArray());
 
         assertEquals(3, cache.size(CachePeekMode.PRIMARY));
 
@@ -146,9 +146,9 @@ private void checkLocalLoad(boolean async) throws Exception {
         List<Integer> keys = primaryKeys(cache, 3);
 
         if (async)
-            cache.localLoadCacheAsync(null, keys.toArray(new Integer[3])).get();
+            cache.localLoadCacheAsync(null, keys.toArray()).get();
         else
-            cache.localLoadCache(null, keys.toArray(new Integer[3]));
+            cache.localLoadCache(null, keys.toArray());
 
         assertEquals(3, cache.localSize());
 
diff --git a/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java b/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java
index d147352e74f35..cfdf88396f93b 100644
--- a/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java
@@ -45,7 +45,7 @@ public void testEmptyNodeAddress() throws Exception {
     /** */
     @Test(expected = org.apache.ignite.client.ClientException.class)
     public void testNullNodeAddress() throws Exception {
-        testConnection(IPv4_HOST, null);
+        testConnection(IPv4_HOST, (String[])null);
     }
 
     /** */
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheFastNodeLeftForTransactionTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheFastNodeLeftForTransactionTest.java
index 1dbbd337783b6..47d561a1862ff 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheFastNodeLeftForTransactionTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/GridCacheFastNodeLeftForTransactionTest.java
@@ -236,7 +236,7 @@ private void check(
 
         checkCacheData(cacheValues, cacheName);
 
-        IdleVerifyResult idleVerifyRes = idleVerify(stoppedNode, null);
+        IdleVerifyResult idleVerifyRes = idleVerify(stoppedNode);
 
         SB sb = new SB();
 
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalDeletionArchiveAbstractTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalDeletionArchiveAbstractTest.java
index 399c85cda7a4b..a854840efb7ef 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalDeletionArchiveAbstractTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/db/wal/WalDeletionArchiveAbstractTest.java
@@ -178,9 +178,7 @@ public void testCheckpointStarted_WhenWalHasTooBigSizeWithoutCheckpoint() throws
     }
 
     /**
-     * Test for check deprecated removing checkpoint by deprecated walHistorySize parameter
-     *
-     * @deprecated Test old removing process depends on WalHistorySize.
+     * Tests the old checkpoint history removal controlled by the deprecated {@code walHistorySize} parameter.
      */
     @Test
     public void testCheckpointHistoryRemovingByTruncate() throws Exception {
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteClusterSnapshotStreamerTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteClusterSnapshotStreamerTest.java
index 4b8ee2e91176b..6ba22c66cd992 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteClusterSnapshotStreamerTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteClusterSnapshotStreamerTest.java
@@ -108,7 +108,7 @@ public class IgniteClusterSnapshotStreamerTest extends AbstractSnapshotSelfTest
     @Override protected IgniteConfiguration getConfiguration(String igniteInstanceName) throws Exception {
         IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
 
-        cfg.setCacheConfiguration(null);
+        cfg.setCacheConfiguration();
 
         if (cfg.isClientMode())
             return cfg;
diff --git a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/dump/IgniteCacheDumpSelfTest.java b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/dump/IgniteCacheDumpSelfTest.java
index 8e34887577607..2c4ac88fe7fff 100644
--- a/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/dump/IgniteCacheDumpSelfTest.java
+++ b/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/dump/IgniteCacheDumpSelfTest.java
@@ -136,7 +136,7 @@ public void testDumpWithNodeFilterCache() throws Exception {
             if (i == 0)
                 cfg.setUserAttributes(F.asMap(DEFAULT_CACHE_NAME, ""));
 
-            cfg.setCacheConfiguration(null);
+            cfg.setCacheConfiguration();
 
             cfg.setClientMode(i == nodes);
 
diff --git a/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterArgumentsTest.java b/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterArgumentsTest.java
index ef81648adce53..8e6faa98a8f8d 100644
--- a/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterArgumentsTest.java
+++ b/modules/dev-utils/src/test/java/org/apache/ignite/development/utils/IgniteWalConverterArgumentsTest.java
@@ -67,7 +67,7 @@ public IgniteWalConverterArgumentsTest() {
     public void testViewHelp() throws Exception {
         final ByteArrayOutputStream out = new ByteArrayOutputStream();
 
-        final IgniteWalConverterArguments parseArgs = parse(new PrintStream(out), null);
+        final IgniteWalConverterArguments parseArgs = parse(new PrintStream(out));
 
         Assert.assertNull(parseArgs);
 
diff --git a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sys/view/SystemViewLocal.java b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sys/view/SystemViewLocal.java
index 200e9c07ed4f8..9bebfd34bcced 100644
--- a/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sys/view/SystemViewLocal.java
+++ b/modules/indexing/src/main/java/org/apache/ignite/internal/processors/query/h2/sys/view/SystemViewLocal.java
@@ -194,7 +194,7 @@ protected Iterator<R> viewIterator(SearchRow first, SearchRow last) {
                     }
                 });
 
-                return createRow(ses, data);
+                return createRow(ses, (Object[])data);
             }
         };
     }
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java
index 973d1abf50902..872a170e5c259 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/h2/sql/BaseH2CompareQueryTest.java
@@ -453,7 +453,7 @@ public void testAggregateOrderBy() throws SQLException {
      */
     @Test
     public void testNullParamSubstitution() throws Exception {
-        List<List<?>> rs1 = compareQueryRes0(cachePers, "select ? from \"pers\".Person", null);
+        List<List<?>> rs1 = compareQueryRes0(cachePers, "select ? from \"pers\".Person", (Object)null);
 
         // Ensure we find something.
         assertFalse(rs1.isEmpty());
diff --git a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsAbstractTest.java b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsAbstractTest.java
index 286d926197dd7..d4b708ca3bb46 100644
--- a/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsAbstractTest.java
+++ b/modules/indexing/src/test/java/org/apache/ignite/internal/processors/query/stat/StatisticsAbstractTest.java
@@ -79,7 +79,7 @@ public abstract class StatisticsAbstractTest extends GridCommonAbstractTest {
     static final StatisticsKey SMALL_KEY = new StatisticsKey(SCHEMA, "SMALL");
 
     /** Statistics target for the whole small table. */
-    static final StatisticsTarget SMALL_TARGET = new StatisticsTarget(SMALL_KEY, null);
+    static final StatisticsTarget SMALL_TARGET = new StatisticsTarget(SMALL_KEY);
 
     /** Async operation timeout for test */
     static final int TIMEOUT = 10_000;
diff --git a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
index ad02887180952..5d9cf1c451dc1 100644
--- a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
+++ b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
@@ -31,14 +31,14 @@
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.InjectableValues;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.servlet.ServletOutputStream;
 import jakarta.servlet.ServletRequest;
 import jakarta.servlet.http.HttpServlet;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.InjectableValues;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.IgniteLogger;
 import org.apache.ignite.IgniteSystemProperties;
@@ -121,10 +121,10 @@ public class GridJettyRestHandler extends HttpServlet {
     /** */
     private static final String WRITE_SYNCHRONIZATION_MODE_PARAM = "writeSynchronizationMode";
 
-    /** @deprecated Should be replaced with AUTHENTICATION + token in IGNITE 3.0 */
+    /** Should be replaced with AUTHENTICATION + token in IGNITE 3.0. */
     private static final String IGNITE_LOGIN = "ignite.login";
 
-    /** @deprecated Should be replaced with AUTHENTICATION + token in IGNITE 3.0 */
+    /** Should be replaced with AUTHENTICATION + token in IGNITE 3.0. */
     private static final String IGNITE_PASSWORD = "ignite.password";
 
     /** */
diff --git a/modules/tools/src/main/java/org/apache/ignite/tools/junit/X.java b/modules/tools/src/main/java/org/apache/ignite/tools/junit/X.java
index e696cd9f49007..4a0e78ef9cc06 100644
--- a/modules/tools/src/main/java/org/apache/ignite/tools/junit/X.java
+++ b/modules/tools/src/main/java/org/apache/ignite/tools/junit/X.java
@@ -60,7 +60,7 @@ final class X {
         Method causeMtd;
 
         try {
-            causeMtd = Throwable.class.getMethod("getCause", null);
+            causeMtd = Throwable.class.getMethod("getCause");
         }
         catch (Exception ignored) {
             causeMtd = null;
@@ -101,7 +101,7 @@ private static Throwable getCauseUsingMethodName(Throwable throwable, String mtd
         Method mtd = null;
 
         try {
-            mtd = throwable.getClass().getMethod(mtdName, null);
+            mtd = throwable.getClass().getMethod(mtdName);
         }
         catch (NoSuchMethodException | SecurityException ignored) {
             // exception ignored
@@ -180,7 +180,7 @@ private static boolean isNestedThrowable(Throwable throwable) {
         Class<?> cls = throwable.getClass();
         for (String CAUSE_MTD_NAME : CAUSE_MTD_NAMES) {
             try {
-                Method mtd = cls.getMethod(CAUSE_MTD_NAME, null);
+                Method mtd = cls.getMethod(CAUSE_MTD_NAME);
 
                 if (mtd != null && Throwable.class.isAssignableFrom(mtd.getReturnType()))
                     return true;

From 3715fd6d3c8cdc12f126d01efbba4188a47a2d8c Mon Sep 17 00:00:00 2001
From: NSAmelchev <namelchev@apache.org>
Date: Thu, 8 Oct 2026 19:51:09 +0300
Subject: [PATCH 2/4] IGNITE-29122 Fix javac and javadoc warnings in the build
 log

---
 .../rest/protocols/http/jetty/GridJettyRestHandler.java     | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
index 5d9cf1c451dc1..5183f2bf633ba 100644
--- a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
+++ b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
@@ -31,14 +31,14 @@
 import java.util.List;
 import java.util.Map;
 import java.util.UUID;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.InjectableValues;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import jakarta.servlet.ServletOutputStream;
 import jakarta.servlet.ServletRequest;
 import jakarta.servlet.http.HttpServlet;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.InjectableValues;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import org.apache.ignite.IgniteCheckedException;
 import org.apache.ignite.IgniteLogger;
 import org.apache.ignite.IgniteSystemProperties;

From 6b4de15911b544b5a5fa7dd74d7dd81b5b7b3777 Mon Sep 17 00:00:00 2001
From: NSAmelchev <namelchev@apache.org>
Date: Thu, 8 Oct 2026 20:09:11 +0300
Subject: [PATCH 3/4] IGNITE-29122 Fix javac and javadoc warnings in the build
 log

---
 parent/pom.xml | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/parent/pom.xml b/parent/pom.xml
index 71ed15cc0dc3e..0ba2e42e1019a 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -1086,10 +1086,12 @@
                                 <phase>compile</phase>
                                 <configuration>
                                     <target>
-                                        <!-- moving licenses generated by "ignite-dependencies" -->
-                                        <move file="${basedir}/target/classes/META-INF/licenses.txt" tofile="${basedir}/target/licenses/${project.artifactId}-licenses.txt"/>
+                                        <!-- Move the licenses generated by "ignite-dependencies". The file is absent in modules
+                                             without resources, e.g. with the pom packaging. -->
+                                        <move file="${basedir}/target/classes/META-INF/licenses.txt"
+                                              tofile="${basedir}/target/licenses/${project.artifactId}-licenses.txt"
+                                              failonerror="false" quiet="true"/>
                                     </target>
-                                    <failOnError>false</failOnError>
                                 </configuration>
                             </execution>
                         </executions>

From b0d8d837434aa644b5bed81c0be4c0915235586a Mon Sep 17 00:00:00 2001
From: NSAmelchev <namelchev@apache.org>
Date: Fri, 9 Oct 2026 20:43:12 +0300
Subject: [PATCH 4/4] review fixes

---
 .../rest/protocols/http/jetty/GridJettyRestHandler.java       | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
index 5183f2bf633ba..e40f43535ce1e 100644
--- a/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
+++ b/modules/rest-http/src/main/java/org/apache/ignite/internal/processors/rest/protocols/http/jetty/GridJettyRestHandler.java
@@ -121,10 +121,10 @@ public class GridJettyRestHandler extends HttpServlet {
     /** */
     private static final String WRITE_SYNCHRONIZATION_MODE_PARAM = "writeSynchronizationMode";
 
-    /** Should be replaced with AUTHENTICATION + token in IGNITE 3.0. */
+    /** */
     private static final String IGNITE_LOGIN = "ignite.login";
 
-    /** Should be replaced with AUTHENTICATION + token in IGNITE 3.0. */
+    /** */
     private static final String IGNITE_PASSWORD = "ignite.password";
 
     /** */