Client with Java 8 runtime and Apache HttpClient 5 Transport fails wi…

…th java.lang.NoSuchMethodError: java.nio.ByteBuffer.flip()Ljava/nio/ByteBuffer (opensearch-project#920) (opensearch-project#921)

(cherry picked from commit 0db2215)

Signed-off-by: Andriy Redko <andriy.redko@aiven.io>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -26,6 +26,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Fix integer overflow for variables in indices stats response ([#877](https://github.com/opensearch-project/opensearch-java/pull/877))
 - Support weight function in function score query ([#880](https://github.com/opensearch-project/opensearch-java/pull/880))
 - Fix pattern replace by making flag and replacement optional as on api  ([#895](https://github.com/opensearch-project/opensearch-java/pull/895))
+- Client with Java 8 runtime and Apache HttpClient 5 Transport fails with java.lang.NoSuchMethodError: java.nio.ByteBuffer.flip()Ljava/nio/ByteBuffer ([#920](https://github.com/opensearch-project/opensearch-java/pull/920)) 
 
 ### Security
 

java-client/src/main/java/org/opensearch/client/transport/httpclient5/internal/HttpEntityAsyncEntityProducer.java

@@ -9,6 +9,7 @@
 package org.opensearch.client.transport.httpclient5.internal;
 
 import java.io.IOException;
+import java.nio.Buffer;
 import java.nio.ByteBuffer;
 import java.nio.channels.Channels;
 import java.nio.channels.ReadableByteChannel;
@@ -140,7 +141,7 @@ public void produce(final DataStreamChannel channel) throws IOException {
             }
         }
         if (byteBuffer.position() > 0) {
-            byteBuffer.flip();
+            ((Buffer) byteBuffer).flip();
             channel.write(byteBuffer);
             byteBuffer.compact();
         }