记录一次Flink写入ES6的踩坑经历

近日在一次Flink打包运行插入ES的任务时，遇到一些版本冲突的问题

Flink自己实现的连接器里提供的ES版本为6.3.1（6.x连接器版本）而我们集群环境则为6.5.4

运行时会报一些异常

2021-06-25 15:46:05,827 WARN org.apache.flink.runtime.taskmanager.Task [] - Window(TumblingEventTimeWindows(8639913600000), ContinuousEventTimeTrigger, AggregateFunctionKaTeX parse error: Expected 'EOF', got '#' at position 60: …: Unnamed (1/3)#̲22 (86c2d30effb…Listener;)Lorg/apache/flink/elasticsearch6/shaded/org/elasticsearch/action/bulk/BulkProcessor$Builder; is abstract
at org.apache.flink.streaming.connectors.elasticsearch6.Elasticsearch6ApiCallBridge.createBulkProcessorBuilder(Elasticsearch6ApiCallBridge.java)
at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.buildBulkProcessor(ElasticsearchSinkBase.java:379)
at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.open(ElasticsearchSinkBase.java:319)
at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:34)
at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102)
at org.apache.flink.streaming.api.operators.StreamSink.open(StreamSink.java:46)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:437)
at org.apache.flink.streaming.runtime.tasks.StreamTask.restoreGates(StreamTask.java:574)
at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.call(StreamTaskActionExecutor.java:55)
at org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:554)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:756)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:563)
at java.lang.Thread.run(Thread.java:745)

在观察过版本依赖后，决定主动下载6.3.1的相关ES包

在补充过jar包之后，运行会抛以下异常

java.lang.AbstractMethodError: Method org/apache/flink/streaming/connectors/elasticsearch6/Elasticsearch6ApiCallBridge.createBulkProcessorBuilder(Ljava/lang/AutoCloseable;Lorg/apache/flink/elasticsearch6/shaded/org/elasticsearch/action/bulk/BulkProcessor$Listener;)Lorg/apache/flink/elasticsearch6/shaded/org/elasticsearch/action/bulk/BulkProcessor$Builder; is abstract
at org.apache.flink.streaming.connectors.elasticsearch6.Elasticsearch6ApiCallBridge.createBulkProcessorBuilder(Elasticsearch6ApiCallBridge.java) ~[flink-connector-elasticsearch6_2.12-1.13.0.jar:1.13.0]
at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.buildBulkProcessor(ElasticsearchSinkBase.java:379) ~[flink-sql-connector-elasticsearch6_2.11-1.13.0.jar:1.13.0]
at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.open(ElasticsearchSinkBase.java:319) ~[flink-sql-connector-elasticsearch6_2.11-1.13.0.jar:1.13.0]
at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:34) ~[realtime_vod_active.jar:?]
at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102) ~[realtime_vod_active.jar:?]
at org.apache.flink.streaming.api.operators.StreamSink.open(StreamSink.java:46) ~[realtime_vod_active.jar:?]
at org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:437) ~[realtime_vod_active.jar:?]
at org.apache.flink.streaming.runtime.tasks.StreamTask.restoreGates(StreamTask.java:574) ~[realtime_vod_active.jar:?]
at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.call(StreamTaskActionExecutor.java:55) ~[realtime_vod_active.jar:?]
at org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:554) ~[realtime_vod_active.jar:?]
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:756) ~[realtime_vod_active.jar:?]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:563) ~[realtime_vod_active.jar:?]
at java.lang.Thread.run(Thread.java:745) ~[?:1.8.0_121]

这个异常显示jar包在找执行环境时，错误的寻找了flink sql connector相关类

我们把相关jar包注释掉即可

再次运行后，报错

java.lang.NoClassDefFoundError: org/apache/flink/streaming/connectors/elasticsearch/ActionRequestFailureHandler
at com.guttv.test.AgDayHyperLogLogUv.main(AgDayHyperLogLogUv.java:198)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222)
at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:812)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:246)
at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1054)
at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1132)atjava.security.AccessController.doPrivileged(NativeMethod)atjavax.security.auth.Subject.doAs(Subject.java:422)atorg.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920)atorg.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)atorg.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1132)Causedby:java.lang.ClassNotFoundException:org.apache.flink.streaming.connectors.elasticsearch.ActionRequestFailureHandleratjava.net.URLClassLoader.findClass(URLClassLoader.java:381)atjava.lang.ClassLoader.loadClass(ClassLoader.java:424)atsun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 17 more

显示flink-es-connector 缺少了某个类，我们把项目代码重新打包，把es连接器的jar包一起打入，注释掉lib目录下原来的连接器jar包，再次运行即可。