yanghua commented on issue #9970: [FLINK-14395] Refactor ES 7 connectors to make them keep consistency with es 6 connectors URL: https://github.com/apache/flink/pull/9970#issuecomment-545361392 @aljoscha I see this information before. But here we introduced es7 relevant dependencies. We have to delete this dependency, otherwise, it will cause an error when running `ElasticsearchSinkITCase#testElasticsearchSink`. The error message is as follows: ``` java.lang.RuntimeException: An error occurred in ElasticsearchSink. at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.checkErrorAndRethrow(ElasticsearchSinkBase.java:381) at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.checkAsyncErrorsAndRequests(ElasticsearchSinkBase.java:386) at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.invoke(ElasticsearchSinkBase.java:307) at org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:56) at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitRecord(OneInputStreamTask.java:173) at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:151) at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:128) at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:69) at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:280) at org.apache.flink.streaming.runtime.tasks.mailbox.execution.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:151) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:422) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:696) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:521) at java.lang.Thread.run(Thread.java:748) Caused by: ElasticsearchException[Elasticsearch exception [type=class_cast_exception, reason=org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext]] at org.elasticsearch.ElasticsearchException.innerFromXContent(ElasticsearchException.java:491) at org.elasticsearch.ElasticsearchException.fromXContent(ElasticsearchException.java:402) at org.elasticsearch.action.bulk.BulkItemResponse.fromXContent(BulkItemResponse.java:139) at org.elasticsearch.action.bulk.BulkResponse.fromXContent(BulkResponse.java:199) at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:1727) at org.elasticsearch.client.RestHighLevelClient.lambda$performRequestAsyncAndParseEntity$10(RestHighLevelClient.java:1520) at org.elasticsearch.client.RestHighLevelClient$1.onSuccess(RestHighLevelClient.java:1598) at org.elasticsearch.client.RestClient$FailureTrackingResponseListener.onSuccess(RestClient.java:556) at org.elasticsearch.client.RestClient$1.completed(RestClient.java:300) at org.elasticsearch.client.RestClient$1.completed(RestClient.java:294) at org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:119) at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.responseCompleted(DefaultClientExchangeHandlerImpl.java:181) at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:448) at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:338) at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:265) at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:81) at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:39) at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:114) at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:162) at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:337) at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:315) at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:276) at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:104) at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:591) ... 1 more ```
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