diff --git a/core/src/main/java/org/elasticsearch/action/DocWriteResponse.java b/core/src/main/java/org/elasticsearch/action/DocWriteResponse.java
index fa3b16ef0d579..69ba6db63ef07 100644
--- a/core/src/main/java/org/elasticsearch/action/DocWriteResponse.java
+++ b/core/src/main/java/org/elasticsearch/action/DocWriteResponse.java
@@ -60,7 +60,7 @@ public abstract class DocWriteResponse extends ReplicationResponse implements Wr
     private static final String FORCED_REFRESH = "forced_refresh";
 
     /**
-     * An enum that represents the the results of CRUD operations, primarily used to communicate the type of
+     * An enum that represents the results of CRUD operations, primarily used to communicate the type of
      * operation that occurred.
      */
     public enum Result implements Writeable {
diff --git a/core/src/main/java/org/elasticsearch/action/admin/cluster/node/tasks/list/ListTasksResponse.java b/core/src/main/java/org/elasticsearch/action/admin/cluster/node/tasks/list/ListTasksResponse.java
index a203dd35b47ff..de5fcf9345d23 100644
--- a/core/src/main/java/org/elasticsearch/action/admin/cluster/node/tasks/list/ListTasksResponse.java
+++ b/core/src/main/java/org/elasticsearch/action/admin/cluster/node/tasks/list/ListTasksResponse.java
@@ -110,7 +110,7 @@ private void buildTaskGroups() {
                     // we found parent in the list of tasks - add it to the parent list
                     parentTask.addGroup(taskGroup);
                 } else {
-                    // we got zombie or the parent was filtered out - add it to the the top task list
+                    // we got zombie or the parent was filtered out - add it to the top task list
                     topLevelTasks.add(taskGroup);
                 }
             } else {
diff --git a/core/src/main/java/org/elasticsearch/action/support/AutoCreateIndex.java b/core/src/main/java/org/elasticsearch/action/support/AutoCreateIndex.java
index 2e442e2cc141c..d834d80338432 100644
--- a/core/src/main/java/org/elasticsearch/action/support/AutoCreateIndex.java
+++ b/core/src/main/java/org/elasticsearch/action/support/AutoCreateIndex.java
@@ -64,7 +64,7 @@ public boolean needToCheck() {
 
     /**
      * Should the index be auto created?
-     * @throws IndexNotFoundException if the the index doesn't exist and shouldn't be auto created
+     * @throws IndexNotFoundException if the index doesn't exist and shouldn't be auto created
      */
     public boolean shouldAutoCreate(String index, ClusterState state) {
         if (resolver.hasIndexOrAlias(index, state)) {
diff --git a/core/src/main/java/org/elasticsearch/action/support/replication/ReplicationOperation.java b/core/src/main/java/org/elasticsearch/action/support/replication/ReplicationOperation.java
index f28beed1d7fac..1b4fd20140dad 100644
--- a/core/src/main/java/org/elasticsearch/action/support/replication/ReplicationOperation.java
+++ b/core/src/main/java/org/elasticsearch/action/support/replication/ReplicationOperation.java
@@ -343,7 +343,7 @@ public interface Primary<
     public interface Replicas<RequestT extends ReplicationRequest<RequestT>> {
 
         /**
-         * Performs the the specified request on the specified replica.
+         * Performs the specified request on the specified replica.
          *
          * @param replica          the shard this request should be executed on
          * @param replicaRequest   the operation to perform
diff --git a/core/src/main/java/org/elasticsearch/cluster/node/DiscoveryNode.java b/core/src/main/java/org/elasticsearch/cluster/node/DiscoveryNode.java
index 283982446dd08..7940fe1bc7045 100644
--- a/core/src/main/java/org/elasticsearch/cluster/node/DiscoveryNode.java
+++ b/core/src/main/java/org/elasticsearch/cluster/node/DiscoveryNode.java
@@ -270,7 +270,7 @@ public String getId() {
     }
 
     /**
-     * The unique ephemeral id of the node. Ephemeral ids are meant to be attached the the life span
+     * The unique ephemeral id of the node. Ephemeral ids are meant to be attached the life span
      * of a node process. When ever a node is restarted, it's ephemeral id is required to change (while it's {@link #getId()}
      * will be read from the data folder and will remain the same across restarts). Since all node attributes and addresses
      * are maintained during the life span of a node process, we can (and are) using the ephemeralId in
diff --git a/core/src/main/java/org/elasticsearch/cluster/routing/IndexShardRoutingTable.java b/core/src/main/java/org/elasticsearch/cluster/routing/IndexShardRoutingTable.java
index 4376980eca8a9..f8d42b3d8f5a0 100644
--- a/core/src/main/java/org/elasticsearch/cluster/routing/IndexShardRoutingTable.java
+++ b/core/src/main/java/org/elasticsearch/cluster/routing/IndexShardRoutingTable.java
@@ -44,9 +44,7 @@
 import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
-import java.util.OptionalDouble;
 import java.util.Set;
-import java.util.stream.Collectors;
 
 import static java.util.Collections.emptyMap;
 
@@ -402,7 +400,7 @@ private static class NodeRankComparator implements Comparator<ShardRouting> {
         @Override
         public int compare(ShardRouting s1, ShardRouting s2) {
             if (s1.currentNodeId().equals(s2.currentNodeId())) {
-                // these shards on the the same node
+                // these shards on the same node
                 return 0;
             }
             Double shard1rank = nodeRanks.get(s1.currentNodeId());
diff --git a/core/src/main/java/org/elasticsearch/common/xcontent/XContentParserUtils.java b/core/src/main/java/org/elasticsearch/common/xcontent/XContentParserUtils.java
index e28b44b42c5a2..77d62f8d3095a 100644
--- a/core/src/main/java/org/elasticsearch/common/xcontent/XContentParserUtils.java
+++ b/core/src/main/java/org/elasticsearch/common/xcontent/XContentParserUtils.java
@@ -39,7 +39,7 @@ private XContentParserUtils() {
     }
 
     /**
-     * Makes sure that current token is of type {@link XContentParser.Token#FIELD_NAME} and the the field name is equal to the provided one
+     * Makes sure that current token is of type {@link XContentParser.Token#FIELD_NAME} and the field name is equal to the provided one
      * @throws ParsingException if the token is not of type {@link XContentParser.Token#FIELD_NAME} or is not equal to the given field name
      */
     public static void ensureFieldName(XContentParser parser, Token token, String fieldName) throws IOException {
diff --git a/core/src/main/java/org/elasticsearch/index/engine/VersionValue.java b/core/src/main/java/org/elasticsearch/index/engine/VersionValue.java
index 1c2fa3005207d..f3d9618838f7b 100644
--- a/core/src/main/java/org/elasticsearch/index/engine/VersionValue.java
+++ b/core/src/main/java/org/elasticsearch/index/engine/VersionValue.java
@@ -34,7 +34,7 @@ class VersionValue implements Accountable {
 
     /** the seq number of the operation that last changed the associated uuid */
     final long seqNo;
-    /** the the term of the operation that last changed the associated uuid */
+    /** the term of the operation that last changed the associated uuid */
     final long term;
 
     VersionValue(long version, long seqNo, long term) {
diff --git a/core/src/main/java/org/elasticsearch/index/seqno/SeqNoStats.java b/core/src/main/java/org/elasticsearch/index/seqno/SeqNoStats.java
index 6c420d64d84be..9c1795d654ccc 100644
--- a/core/src/main/java/org/elasticsearch/index/seqno/SeqNoStats.java
+++ b/core/src/main/java/org/elasticsearch/index/seqno/SeqNoStats.java
@@ -22,7 +22,6 @@
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
-import org.elasticsearch.common.xcontent.ToXContent.Params;
 import org.elasticsearch.common.xcontent.ToXContentFragment;
 import org.elasticsearch.common.xcontent.XContentBuilder;
 
@@ -42,7 +41,7 @@ public class SeqNoStats implements ToXContentFragment, Writeable {
     public SeqNoStats(long maxSeqNo, long localCheckpoint, long globalCheckpoint) {
         assert localCheckpoint <= maxSeqNo:
             "local checkpoint [" + localCheckpoint + "] is above maximum seq no [" + maxSeqNo + "]";
-        // note that the the global checkpoint can be higher from both maxSeqNo and localCheckpoint
+        // note that the global checkpoint can be higher from both maxSeqNo and localCheckpoint
         // as we use this stats object to describe lucene commits as well as live statistic.
         this.maxSeqNo = maxSeqNo;
         this.localCheckpoint = localCheckpoint;
diff --git a/core/src/main/java/org/elasticsearch/index/shard/IndexShard.java b/core/src/main/java/org/elasticsearch/index/shard/IndexShard.java
index 9845064c4df4a..34ed1b4ce9e35 100644
--- a/core/src/main/java/org/elasticsearch/index/shard/IndexShard.java
+++ b/core/src/main/java/org/elasticsearch/index/shard/IndexShard.java
@@ -609,6 +609,7 @@ private void verifyRelocatingState() {
         }
     }
 
+    @Override
     public IndexShardState state() {
         return state;
     }
@@ -1346,6 +1347,7 @@ public RecoveryStats recoveryStats() {
      * Returns the current {@link RecoveryState} if this shard is recovering or has been recovering.
      * Returns null if the recovery has not yet started or shard was not recovered (created via an API).
      */
+    @Override
     public RecoveryState recoveryState() {
         return this.recoveryState;
     }
@@ -1757,7 +1759,7 @@ public void updateGlobalCheckpointOnReplica(final long globalCheckpoint, final S
              * case that the global checkpoint update from the primary is ahead of the local checkpoint on this shard. In this case, we
              * ignore the global checkpoint update. This can happen if we are in the translog stage of recovery. Prior to this, the engine
              * is not opened and this shard will not receive global checkpoint updates, and after this the shard will be contributing to
-             * calculations of the the global checkpoint. However, we can not assert that we are in the translog stage of recovery here as
+             * calculations of the global checkpoint. However, we can not assert that we are in the translog stage of recovery here as
              * while the global checkpoint update may have emanated from the primary when we were in that state, we could subsequently move
              * to recovery finalization, or even finished recovery before the update arrives here.
              */
diff --git a/core/src/main/java/org/elasticsearch/index/shard/IndexShardOperationPermits.java b/core/src/main/java/org/elasticsearch/index/shard/IndexShardOperationPermits.java
index ac3459b78e9a3..3f6d443aa8009 100644
--- a/core/src/main/java/org/elasticsearch/index/shard/IndexShardOperationPermits.java
+++ b/core/src/main/java/org/elasticsearch/index/shard/IndexShardOperationPermits.java
@@ -183,7 +183,7 @@ private void releaseDelayedOperations() {
              *   - blockOperations can be called on a recovery thread which can be expected to be interrupted when recovery is cancelled;
              *     interruptions are bad here as permit acquisition will throw an interrupted exception which will be swallowed by
              *     the threaded action listener if the queue of the thread pool on which it submits is full
-             *   - if a permit is acquired and the queue of the thread pool which the the threaded action listener uses is full, the
+             *   - if a permit is acquired and the queue of the thread pool which the threaded action listener uses is full, the
              *     onFailure handler is executed on the calling thread; this should not be the recovery thread as it would delay the
              *     recovery
              */
diff --git a/core/src/main/java/org/elasticsearch/script/ScriptService.java b/core/src/main/java/org/elasticsearch/script/ScriptService.java
index 2998041d8a374..652ec3dda3d29 100644
--- a/core/src/main/java/org/elasticsearch/script/ScriptService.java
+++ b/core/src/main/java/org/elasticsearch/script/ScriptService.java
@@ -272,7 +272,7 @@ public <FactoryType> FactoryType compile(Script script, ScriptContext<FactoryTyp
 
         if (type == ScriptType.STORED) {
             // * lang and options will both be null when looking up a stored script,
-            // so we must get the source to retrieve the them before checking if the
+            // so we must get the source to retrieve them before checking if the
             // context is supported
             // * a stored script must be pulled from the cluster state every time in case
             // the script has been updated since the last compilation
diff --git a/core/src/main/java/org/elasticsearch/transport/TransportService.java b/core/src/main/java/org/elasticsearch/transport/TransportService.java
index fa8278dea3669..c408f46bcafab 100644
--- a/core/src/main/java/org/elasticsearch/transport/TransportService.java
+++ b/core/src/main/java/org/elasticsearch/transport/TransportService.java
@@ -144,7 +144,7 @@ public void close() throws IOException {
     /**
      * Build the service.
      *
-     * @param clusterSettings if non null the the {@linkplain TransportService} will register with the {@link ClusterSettings} for settings
+     * @param clusterSettings if non null, the {@linkplain TransportService} will register with the {@link ClusterSettings} for settings
  *        updates for {@link #TRACE_LOG_EXCLUDE_SETTING} and {@link #TRACE_LOG_INCLUDE_SETTING}.
      */
     public TransportService(Settings settings, Transport transport, ThreadPool threadPool, TransportInterceptor transportInterceptor,
diff --git a/core/src/test/java/org/elasticsearch/index/engine/InternalEngineTests.java b/core/src/test/java/org/elasticsearch/index/engine/InternalEngineTests.java
index 8d948846fbece..69e1631d7db54 100644
--- a/core/src/test/java/org/elasticsearch/index/engine/InternalEngineTests.java
+++ b/core/src/test/java/org/elasticsearch/index/engine/InternalEngineTests.java
@@ -20,6 +20,7 @@
 package org.elasticsearch.index.engine;
 
 import com.carrotsearch.hppc.cursors.ObjectObjectCursor;
+
 import org.apache.logging.log4j.Level;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -2848,7 +2849,7 @@ public void run() {
     }
 
     /**
-     * Tests that when the the close method returns the engine is actually guaranteed to have cleaned up and that resources are closed
+     * Tests that when the close method returns the engine is actually guaranteed to have cleaned up and that resources are closed
      */
     public void testConcurrentEngineClosed() throws BrokenBarrierException, InterruptedException {
         Thread[] closingThreads = new Thread[3];
diff --git a/core/src/test/java/org/elasticsearch/index/seqno/GlobalCheckpointTrackerTests.java b/core/src/test/java/org/elasticsearch/index/seqno/GlobalCheckpointTrackerTests.java
index db686248ff2cc..4741921cdf917 100644
--- a/core/src/test/java/org/elasticsearch/index/seqno/GlobalCheckpointTrackerTests.java
+++ b/core/src/test/java/org/elasticsearch/index/seqno/GlobalCheckpointTrackerTests.java
@@ -517,7 +517,7 @@ public void testUpdateAllocationIdsFromMaster() throws Exception {
     /**
      * If we do not update the global checkpoint in {@link GlobalCheckpointTracker#markAllocationIdAsInSync(String, long)} after adding the
      * allocation ID to the in-sync set and removing it from pending, the local checkpoint update that freed the thread waiting for the
-     * local checkpoint to advance could miss updating the global checkpoint in a race if the the waiting thread did not add the allocation
+     * local checkpoint to advance could miss updating the global checkpoint in a race if the waiting thread did not add the allocation
      * ID to the in-sync set and remove it from the pending set before the local checkpoint updating thread executed the global checkpoint
      * update. This test fails without an additional call to {@link GlobalCheckpointTracker#updateGlobalCheckpointOnPrimary()} after
      * removing the allocation ID from the pending set in {@link GlobalCheckpointTracker#markAllocationIdAsInSync(String, long)} (even if a
diff --git a/core/src/test/java/org/elasticsearch/search/sort/FieldSortBuilderTests.java b/core/src/test/java/org/elasticsearch/search/sort/FieldSortBuilderTests.java
index 72c0236c8b71d..163b9391a1b98 100644
--- a/core/src/test/java/org/elasticsearch/search/sort/FieldSortBuilderTests.java
+++ b/core/src/test/java/org/elasticsearch/search/sort/FieldSortBuilderTests.java
@@ -372,7 +372,7 @@ public void testNestedSortBothThrows() throws IOException {
     }
 
     /**
-     * Test the the nested Filter gets rewritten
+     * Test the nested Filter gets rewritten
      */
     public void testNestedRewrites() throws IOException {
         FieldSortBuilder sortBuilder = new FieldSortBuilder(MAPPED_STRING_FIELDNAME);
@@ -389,7 +389,7 @@ public QueryBuilder doRewrite(QueryRewriteContext queryShardContext) throws IOEx
     }
 
     /**
-     * Test the the nested sort gets rewritten
+     * Test the nested sort gets rewritten
      */
     public void testNestedSortRewrites() throws IOException {
         FieldSortBuilder sortBuilder = new FieldSortBuilder(MAPPED_STRING_FIELDNAME);
diff --git a/core/src/test/java/org/elasticsearch/search/sort/GeoDistanceSortBuilderTests.java b/core/src/test/java/org/elasticsearch/search/sort/GeoDistanceSortBuilderTests.java
index eba2904d7705a..1109bdfc1f1a1 100644
--- a/core/src/test/java/org/elasticsearch/search/sort/GeoDistanceSortBuilderTests.java
+++ b/core/src/test/java/org/elasticsearch/search/sort/GeoDistanceSortBuilderTests.java
@@ -588,7 +588,7 @@ public void testNestedSortBothThrows() throws IOException {
     }
 
     /**
-     * Test the the nested Filter gets rewritten
+     * Test the nested Filter gets rewritten
      */
     public void testNestedRewrites() throws IOException {
         GeoDistanceSortBuilder sortBuilder = new GeoDistanceSortBuilder("fieldName", 0.0, 0.0);
@@ -605,7 +605,7 @@ public QueryBuilder doRewrite(QueryRewriteContext queryShardContext) throws IOEx
     }
 
     /**
-     * Test the the nested sort gets rewritten
+     * Test the nested sort gets rewritten
      */
     public void testNestedSortRewrites() throws IOException {
         GeoDistanceSortBuilder sortBuilder = new GeoDistanceSortBuilder("fieldName", 0.0, 0.0);
diff --git a/core/src/test/java/org/elasticsearch/search/sort/ScriptSortBuilderTests.java b/core/src/test/java/org/elasticsearch/search/sort/ScriptSortBuilderTests.java
index 00ba365d8be79..d5911a41aee56 100644
--- a/core/src/test/java/org/elasticsearch/search/sort/ScriptSortBuilderTests.java
+++ b/core/src/test/java/org/elasticsearch/search/sort/ScriptSortBuilderTests.java
@@ -31,11 +31,11 @@
 import org.elasticsearch.index.fielddata.fieldcomparator.BytesRefFieldComparatorSource;
 import org.elasticsearch.index.fielddata.fieldcomparator.DoubleValuesComparatorSource;
 import org.elasticsearch.index.mapper.TypeFieldMapper;
-import org.elasticsearch.index.query.QueryBuilders;
-import org.elasticsearch.index.query.QueryShardContext;
 import org.elasticsearch.index.query.MatchNoneQueryBuilder;
 import org.elasticsearch.index.query.QueryBuilder;
+import org.elasticsearch.index.query.QueryBuilders;
 import org.elasticsearch.index.query.QueryRewriteContext;
+import org.elasticsearch.index.query.QueryShardContext;
 import org.elasticsearch.index.query.RangeQueryBuilder;
 import org.elasticsearch.script.Script;
 import org.elasticsearch.script.ScriptType;
@@ -360,7 +360,7 @@ public void testNestedSortBothThrows() throws IOException {
      }
 
     /**
-     * Test the the nested Filter gets rewritten
+     * Test the nested Filter gets rewritten
      */
     public void testNestedRewrites() throws IOException {
         ScriptSortBuilder sortBuilder = new ScriptSortBuilder(mockScript("something"), ScriptSortType.STRING);
@@ -377,7 +377,7 @@ public QueryBuilder doRewrite(QueryRewriteContext queryShardContext) throws IOEx
     }
 
     /**
-     * Test the the nested sort gets rewritten
+     * Test the nested sort gets rewritten
      */
     public void testNestedSortRewrites() throws IOException {
         ScriptSortBuilder sortBuilder = new ScriptSortBuilder(mockScript("something"), ScriptSortType.STRING);
diff --git a/docs/painless/painless-operators.asciidoc b/docs/painless/painless-operators.asciidoc
index 2ed0fb6d4be50..0d5135022ad90 100644
--- a/docs/painless/painless-operators.asciidoc
+++ b/docs/painless/painless-operators.asciidoc
@@ -660,7 +660,7 @@ Note that def types will be assumed to be of the boolean type.  Any def type eva
 *Examples:*
 [source,Java]
 ----
-boolean x = !false; // declares the boolean variable x and sets it to the the opposite of the false value
+boolean x = !false; // declares the boolean variable x and sets it to the opposite of the false value
 boolean y = !x;     // declares the boolean variable y and sets it to the opposite of the boolean variable x
 def z = !y;         // declares the def variable z and sets it to the opposite of the boolean variable y
 ----
diff --git a/docs/reference/docs/delete-by-query.asciidoc b/docs/reference/docs/delete-by-query.asciidoc
index 61b9b839e17a7..b15604a468eca 100644
--- a/docs/reference/docs/delete-by-query.asciidoc
+++ b/docs/reference/docs/delete-by-query.asciidoc
@@ -239,7 +239,7 @@ The number of documents that were successfully deleted.
 
 `batches`::
 
-The number of scroll responses pulled back by the the delete by query.
+The number of scroll responses pulled back by the delete by query.
 
 `version_conflicts`::
 
diff --git a/docs/reference/docs/reindex.asciidoc b/docs/reference/docs/reindex.asciidoc
index 4182f78a682a3..8ebf7002a891b 100644
--- a/docs/reference/docs/reindex.asciidoc
+++ b/docs/reference/docs/reindex.asciidoc
@@ -616,7 +616,7 @@ The number of documents that were successfully created.
 
 `batches`::
 
-The number of scroll responses pulled back by the the reindex.
+The number of scroll responses pulled back by the reindex.
 
 `version_conflicts`::
 
diff --git a/docs/reference/docs/update-by-query.asciidoc b/docs/reference/docs/update-by-query.asciidoc
index 77520c811e9a7..326bbc216adee 100644
--- a/docs/reference/docs/update-by-query.asciidoc
+++ b/docs/reference/docs/update-by-query.asciidoc
@@ -290,7 +290,7 @@ The number of documents that were successfully updated.
 
 `batches`::
 
-The number of scroll responses pulled back by the the update by query.
+The number of scroll responses pulled back by the update by query.
 
 `version_conflicts`::
 
diff --git a/docs/reference/ingest/ingest-node.asciidoc b/docs/reference/ingest/ingest-node.asciidoc
index 3ea1ecca0d639..bdcbf2a9166fe 100644
--- a/docs/reference/ingest/ingest-node.asciidoc
+++ b/docs/reference/ingest/ingest-node.asciidoc
@@ -2012,7 +2012,7 @@ into:
 // NOTCONSOLE
 
 If there is already a `bar` field nested under `foo` then
-this processor merges the the `foo.bar` field into it. If the field is
+this processor merges the `foo.bar` field into it. If the field is
 a scalar value then it will turn that field into an array field.
 
 For example, the following document:
@@ -2054,7 +2054,7 @@ Consider the following document:
 --------------------------------------------------
 // NOTCONSOLE
 
-Then the the `foo` needs to be renamed first before the `dot_expander`
+Then the `foo` needs to be renamed first before the `dot_expander`
 processor is applied. So in order for the `foo.bar` field to properly
 be expanded into the `bar` field under the `foo` field the following
 pipeline should be used:
diff --git a/docs/reference/modules/scripting/engine.asciidoc b/docs/reference/modules/scripting/engine.asciidoc
index 37baa0801c9aa..da3b4529daacc 100644
--- a/docs/reference/modules/scripting/engine.asciidoc
+++ b/docs/reference/modules/scripting/engine.asciidoc
@@ -21,7 +21,7 @@ include-tagged::{plugins-examples-dir}/script-expert-scoring/src/main/java/org/e
 --------------------------------------------------
 
 You can execute the script by specifying its `lang` as `expert_scripts`, and the name
-of the script as the the script source:
+of the script as the script source:
 
 
 [source,js]
diff --git a/docs/reference/query-dsl/percolate-query.asciidoc b/docs/reference/query-dsl/percolate-query.asciidoc
index 9668af7245a76..f5d779340754d 100644
--- a/docs/reference/query-dsl/percolate-query.asciidoc
+++ b/docs/reference/query-dsl/percolate-query.asciidoc
@@ -291,7 +291,7 @@ GET /my-index/_search
 
 <1> The version is optional, but useful in certain cases. We can ensure that we are trying to percolate
 the document we just have indexed. A change may be made after we have indexed, and if that is the
-case the then the search request would fail with a version conflict error.
+case the search request would fail with a version conflict error.
 
 The search response returned is identical as in the previous example.
 
diff --git a/docs/reference/setup/upgrade/upgrade-node.asciidoc b/docs/reference/setup/upgrade/upgrade-node.asciidoc
index 67b877cebc6f0..db9d352e83184 100644
--- a/docs/reference/setup/upgrade/upgrade-node.asciidoc
+++ b/docs/reference/setup/upgrade/upgrade-node.asciidoc
@@ -9,7 +9,7 @@ To upgrade using a zip or compressed tarball:
 .. Extract the zip or tarball to a _new_ directory. This is critical if you
    are not using external `config` and `data` directories.
 
-.. Set the the `ES_PATH_CONF` environment variable to specify the location of
+.. Set the `ES_PATH_CONF` environment variable to specify the location of
    your external `config` directory and `jvm.options` file. If you are not
    using an external `config` directory, copy your old configuration
    over to the new installation.
diff --git a/modules/tribe/src/test/java/org/elasticsearch/tribe/TribeIntegrationTests.java b/modules/tribe/src/test/java/org/elasticsearch/tribe/TribeIntegrationTests.java
index cd86d7216a74a..9957ad6bae9ee 100644
--- a/modules/tribe/src/test/java/org/elasticsearch/tribe/TribeIntegrationTests.java
+++ b/modules/tribe/src/test/java/org/elasticsearch/tribe/TribeIntegrationTests.java
@@ -110,7 +110,7 @@ public class TribeIntegrationTests extends ESIntegTestCase {
     private static final Predicate<InternalTestCluster> CLUSTER2_ONLY = c -> c.getClusterName().equals(cluster2.getClusterName());
 
     /**
-     * A predicate that is used to select the the two remote clusters
+     * A predicate that is used to select the two remote clusters
      **/
     private static final Predicate<InternalTestCluster> ALL = c -> true;
 
diff --git a/plugins/discovery-gce/src/main/java/org/elasticsearch/cloud/gce/GceInstancesService.java b/plugins/discovery-gce/src/main/java/org/elasticsearch/cloud/gce/GceInstancesService.java
index 6f7313051fea2..4c90fd5c3731b 100644
--- a/plugins/discovery-gce/src/main/java/org/elasticsearch/cloud/gce/GceInstancesService.java
+++ b/plugins/discovery-gce/src/main/java/org/elasticsearch/cloud/gce/GceInstancesService.java
@@ -65,7 +65,7 @@ public interface GceInstancesService {
 
     /**
      * cloud.gce.max_wait: How long exponential backoff should retry before definitely failing.
-     * It's a total time since the the initial call is made.
+     * It's a total time since the initial call is made.
      * A negative value will retry indefinitely. Defaults to `-1s` (retry indefinitely).
      */
     Setting<TimeValue> MAX_WAIT_SETTING =
diff --git a/plugins/ingest-geoip/src/test/java/org/elasticsearch/ingest/geoip/GeoIpProcessorFactoryTests.java b/plugins/ingest-geoip/src/test/java/org/elasticsearch/ingest/geoip/GeoIpProcessorFactoryTests.java
index 3904b043a5255..d76056cac3563 100644
--- a/plugins/ingest-geoip/src/test/java/org/elasticsearch/ingest/geoip/GeoIpProcessorFactoryTests.java
+++ b/plugins/ingest-geoip/src/test/java/org/elasticsearch/ingest/geoip/GeoIpProcessorFactoryTests.java
@@ -231,7 +231,7 @@ public void testLazyLoading() throws Exception {
         Files.copy(new ByteArrayInputStream(StreamsUtils.copyToBytesFromClasspath("/GeoLite2-Country.mmdb.gz")),
             geoIpConfigDir.resolve("GeoLite2-Country.mmdb.gz"));
 
-        // Loading another database reader instances, because otherwise we can't test lazy loading as the the
+        // Loading another database reader instances, because otherwise we can't test lazy loading as the
         // database readers used at class level are reused between tests. (we want to keep that otherwise running this
         // test will take roughly 4 times more time)
         Map<String, DatabaseReaderLazyLoader> databaseReaders =
diff --git a/qa/vagrant/src/test/resources/packaging/utils/utils.bash b/qa/vagrant/src/test/resources/packaging/utils/utils.bash
index 58d49558b1be0..dc5238d03f46b 100644
--- a/qa/vagrant/src/test/resources/packaging/utils/utils.bash
+++ b/qa/vagrant/src/test/resources/packaging/utils/utils.bash
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# This file contains some utilities to test the the .deb/.rpm
+# This file contains some utilities to test the .deb/.rpm
 # packages and the SysV/Systemd scripts.
 
 # WARNING: This testing file must be executed as root and can
diff --git a/test/framework/src/main/java/org/elasticsearch/test/transport/MockTransportService.java b/test/framework/src/main/java/org/elasticsearch/test/transport/MockTransportService.java
index 0979cfbfea2b7..c94e9aa46a689 100644
--- a/test/framework/src/main/java/org/elasticsearch/test/transport/MockTransportService.java
+++ b/test/framework/src/main/java/org/elasticsearch/test/transport/MockTransportService.java
@@ -20,6 +20,7 @@
 package org.elasticsearch.test.transport;
 
 import com.carrotsearch.randomizedtesting.SysGlobals;
+
 import org.elasticsearch.Version;
 import org.elasticsearch.cluster.ClusterModule;
 import org.elasticsearch.cluster.node.DiscoveryNode;
@@ -126,7 +127,7 @@ public static MockTransportService createNewService(Settings settings, Transport
     /**
      * Build the service.
      *
-     * @param clusterSettings if non null the the {@linkplain TransportService} will register with the {@link ClusterSettings} for settings
+     * @param clusterSettings if non null the {@linkplain TransportService} will register with the {@link ClusterSettings} for settings
      *                        updates for {@link #TRACE_LOG_EXCLUDE_SETTING} and {@link #TRACE_LOG_INCLUDE_SETTING}.
      */
     public MockTransportService(Settings settings, Transport transport, ThreadPool threadPool, TransportInterceptor interceptor,
@@ -139,7 +140,7 @@ public MockTransportService(Settings settings, Transport transport, ThreadPool t
     /**
      * Build the service.
      *
-     * @param clusterSettings if non null the the {@linkplain TransportService} will register with the {@link ClusterSettings} for settings
+     * @param clusterSettings if non null the {@linkplain TransportService} will register with the {@link ClusterSettings} for settings
      *                        updates for {@link #TRACE_LOG_EXCLUDE_SETTING} and {@link #TRACE_LOG_INCLUDE_SETTING}.
      */
     public MockTransportService(Settings settings, Transport transport, ThreadPool threadPool, TransportInterceptor interceptor,
@@ -345,7 +346,7 @@ public void addUnresponsiveRule(TransportAddress transportAddress, final TimeVal
         final long startTime = System.currentTimeMillis();
 
         addDelegate(transportAddress, new ClearableTransport(original) {
-            private final Queue<Runnable> requestsToSendWhenCleared = new LinkedBlockingDeque<Runnable>();
+            private final Queue<Runnable> requestsToSendWhenCleared = new LinkedBlockingDeque<>();
             private boolean cleared = false;
 
             TimeValue getDelay() {