[FLINK-8334] Elasticsearch Connector throwing java.lang.ClassNotFoundException: org.jboss.netty.channel.socket.nio.SocketSendBufferPool$GatheringSendBuffer - ASF JIRA

Details

Type: Bug
Status: Closed
Priority: Major
Resolution: Not A Problem
Affects Version/s: 1.4.0
Fix Version/s: None
Component/s: Connectors / ElasticSearch
Labels:
- elasticsearch
- netty
Environment:

Using Elasticsearch 5.1.2 in a docker environment
Flink is deployed on a different docker

Description

I have a Elasticsearch sink configured. When a job is submitted, It goes into fail status in a few seconds.
Following is the Exception from the Job screen:

java.lang.RuntimeException: Elasticsearch client is not connected to any Elasticsearch nodes!
	at org.apache.flink.streaming.connectors.elasticsearch5.Elasticsearch5ApiCallBridge.createClient(Elasticsearch5ApiCallBridge.java:80)
	at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.open(ElasticsearchSinkBase.java:281)
	at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36)
	at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102)
	at org.apache.flink.streaming.api.operators.StreamSink.open(StreamSink.java:48)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.openAllOperators(StreamTask.java:393)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:254)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
	at java.lang.Thread.run(Thread.java:748)

In the logs, Following stack trace is shown.

2018-01-01 12:15:14,432 INFO  org.elasticsearch.client.transport.TransportClientNodesService  - failed to get node info for {#transport#-1}{8IZTMPcSRCyKRynhfyN2fA}{192.168.99.100}{192.168.99.100:9300}, disconnecting...
NodeDisconnectedException[[][192.168.99.100:9300][cluster:monitor/nodes/liveness] disconnected]
2018-01-01 12:15:19,433 ERROR org.elasticsearch.transport.netty3.Netty3Utils                - fatal error on the network layer
	at org.elasticsearch.transport.netty3.Netty3Utils.maybeDie(Netty3Utils.java:195)
	at org.elasticsearch.transport.netty3.Netty3MessageChannelHandler.exceptionCaught(Netty3MessageChannelHandler.java:82)
	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
	at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377)
	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
	at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.write0(AbstractNioWorker.java:291)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.writeFromTaskLoop(AbstractNioWorker.java:151)
	at org.jboss.netty.channel.socket.nio.AbstractNioChannel$WriteTask.run(AbstractNioChannel.java:292)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:391)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:315)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
	at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
2018-01-01 12:15:19,448 WARN  org.elasticsearch.transport.netty3.Netty3Transport            - exception caught on transport layer [[id: 0xef889995, /172.17.0.4:48450 => /192.168.99.100:9300]], closing connection
ElasticsearchException[java.lang.NoClassDefFoundError: org/jboss/netty/channel/socket/nio/SocketSendBufferPool$GatheringSendBuffer]; nested: NoClassDefFoundError[org/jboss/netty/channel/socket/nio/SocketSendBufferPool$GatheringSendBuffer]; nested: ClassNotFoundException[org.jboss.netty.channel.socket.nio.SocketSendBufferPool$GatheringSendBuffer];
	at org.elasticsearch.transport.netty3.Netty3Transport.exceptionCaught(Netty3Transport.java:325)
	at org.elasticsearch.transport.netty3.Netty3MessageChannelHandler.exceptionCaught(Netty3MessageChannelHandler.java:83)
	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
	at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
	at org.jboss.netty.handler.codec.frame.FrameDecoder.exceptionCaught(FrameDecoder.java:377)
	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112)
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
	at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.write0(AbstractNioWorker.java:291)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.writeFromTaskLoop(AbstractNioWorker.java:151)
	at org.jboss.netty.channel.socket.nio.AbstractNioChannel$WriteTask.run(AbstractNioChannel.java:292)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:391)
	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:315)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)
	at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)
	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: org/jboss/netty/channel/socket/nio/SocketSendBufferPool$GatheringSendBuffer
	at org.jboss.netty.channel.socket.nio.SocketSendBufferPool.acquire(SocketSendBufferPool.java:70)
	at org.jboss.netty.channel.socket.nio.SocketSendBufferPool.acquire(SocketSendBufferPool.java:46)
	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.write0(AbstractNioWorker.java:193)
	... 11 more
Caused by: java.lang.ClassNotFoundException: org.jboss.netty.channel.socket.nio.SocketSendBufferPool$GatheringSendBuffer
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$ChildFirstClassLoader.loadClass(FlinkUserCodeClassLoaders.java:128)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 14 more

It looks like a dependency issues with netty.

Relevant sections in POM

...
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<flink.version>1.4.0</flink.version>
		<slf4j.version>1.7.7</slf4j.version>
		<log4j.version>1.2.17</log4j.version>
		<scala.binary.version>2.11</scala.binary.version>
	</properties>
...
<dependencies>
...
		<dependency>
			<groupId>org.apache.flink</groupId>
			<artifactId>flink-connector-elasticsearch5_${scala.binary.version}</artifactId>
			<version>1.4.0</version>
		</dependency>
...
</dependencies>
<profiles>
	<profile>
		<!-- Profile for packaging correct JAR files -->
		<id>build-jar</id>
...
                <dependencies>
				<dependency>
					<groupId>org.apache.flink</groupId>
					<artifactId>flink-connector-elasticsearch5_${scala.binary.version}</artifactId>
					<version>1.4.0</version>
				</dependency>
		</dependencies>
<build>
				<plugins>
					<!-- disable the exclusion rules -->
					<plugin>
						<groupId>org.apache.maven.plugins</groupId>
						<artifactId>maven-shade-plugin</artifactId>
						<version>2.4.1</version>
						<executions>
							<execution>
								<phase>package</phase>
								<goals>
									<goal>shade</goal>
								</goals>
								<configuration>
									<transformers>
										<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
									</transformers>
									<artifactSet>
										<excludes combine.self="override"></excludes>
									</artifactSet>
								</configuration>
							</execution>
						</executions>
					</plugin>
				</plugins>
			</build>
...

Elasticsearch is working as I am able to create indices and connected through kibana(in a separate docker).

Elasticsearch Connector throwing java.lang.ClassNotFoundException: org.jboss.netty.channel.socket.nio.SocketSendBufferPool$GatheringSendBuffer

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