Erro de ignição: falha ao enviar RPC ao datanod

Question

Temos poucos problemas com o nosso servidor Spark Thrift. É um novo cluster Ambari e nenhum trabalho do Spark está sendo executado agora.

No log, podemos ver uma mensagem de erro:

Failed to send RPC 9053901149358924945 to /DATA NODE MACHINE:50149

Por favor, avise por que isso acontece e qual é a solução para isso?

Failed to send RPC 9053901149358924945 to /DATA NODE MACHINE:50149: java.nio.channels.ClosedChannelException
more spark-hive-org.apache.spark.sql.hive.thriftserver.HiveThriftServer2-1-master03.sys67.com.out

Spark Command: /usr/jdk64/jdk1.8.0_112/bin/java -Dhdp.version=2.6.0.3-8 -cp /usr/hdp/current/spark2-thriftserver/conf/:/usr/hdp/current/spark2-thriftserver/jars/*:/usr/hdp/c
urrent/hadoop-client/conf/ -Xmx10000m org.apache.spark.deploy.SparkSubmit --conf spark.driver.memory=15g --properties-file /usr/hdp/current/spark2-thriftserver/conf/spark-th
rift-sparkconf.conf --class org.apache.spark.sql.hive.thriftserver.HiveThriftServer2 --name Thrift JDBC/ODBC Server --executor-cores 7 spark-internal
========================================
Warning: Master yarn-client is deprecated since 2.0. Please use master "yarn" with specified deploy mode instead.
18/02/07 17:55:21 ERROR TransportClient: Failed to send RPC 9053901149358924945 to /12.87.2.64:50149: java.nio.channels.ClosedChannelException
java.nio.channels.ClosedChannelException
        at io.netty.channel.AbstractChannel$AbstractUnsafe.write(...)(Unknown Source)
18/02/07 17:55:21 ERROR YarnSchedulerBackend$YarnSchedulerEndpoint: Sending RequestExecutors(2,0,Map()) to AM was unsuccessful
java.io.IOException: Failed to send RPC 9053901149358924945 to /12.87.2.64:50149: java.nio.channels.ClosedChannelException
        at org.apache.spark.network.client.TransportClient$3.operationComplete(TransportClient.java:249)
        at org.apache.spark.network.client.TransportClient$3.operationComplete(TransportClient.java:233)
        at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:514)
        at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:488)
        at io.netty.util.concurrent.DefaultPromise.access$000(DefaultPromise.java:34)
        at io.netty.util.concurrent.DefaultPromise$1.run(DefaultPromise.java:438)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:408)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:455)
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
        at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.channels.ClosedChannelException
        at io.netty.channel.AbstractChannel$AbstractUnsafe.write(...)(Unknown Source)
18/02/07 17:55:21 ERROR SparkContext: Error initializing SparkContext.

Também tentamos capturar alguns pontos positivos no link a seguir

link

mas como este é um novo cluster Ambari e não achamos que este artigo seja adequado para esse problema específico.