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https://issues.apache.org/jira/browse/SPARK-19354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16005767#comment-16005767
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Imran Rashid commented on SPARK-19354:
--------------------------------------
[~tgraves] I haven't run into this yet -- frankly I still steer users away from
speculation for the most part. I don't know of any fix for this. I can see
how this messes up blacklisting in particular, but just to make sure I
understand right, this isn't a blacklisting bug, right? the problem is that
killing speculative tasks has some unintended side effects, right? IIUC, the
original task looks like it failed for the wrong reason, and even worse, the
entire executor dies, so other tasks running on the executor fail?
I don't understand this part:
bq. When sorter spill to disk, the task is killed. Then a interruptedExecption
is thrown. Then OOM will be thrown
how does the interrupted exception lead to an OOM, and killing the executor? I
can't see how speculative execution could be used effectively if killing tasks
can bring down an executor.
> Killed tasks are getting marked as FAILED
> -----------------------------------------
>
> Key: SPARK-19354
> URL: https://issues.apache.org/jira/browse/SPARK-19354
> Project: Spark
> Issue Type: Bug
> Components: Scheduler, Spark Core
> Reporter: Devaraj K
>
> When we enable speculation, we can see there are multiple attempts running
> for the same task when the first task progress is slow. If any of the task
> attempt succeeds then the other attempts will be killed, during killing the
> attempts those attempts are getting marked as failed due to the below error.
> We need to handle this error and mark the attempt as KILLED instead of FAILED.
> ||93 ||214 ||1 (speculative) ||FAILED ||ANY ||1 /
> xx.xx.xx.x2
> stdout
> stderr||2017/01/24 10:30:44 ||0.2 s ||||||0.0 B / 0 ||8.0 KB / 400
> ||java.io.IOException: Failed on local exception:
> java.nio.channels.ClosedByInterruptException; Host Details : local host is:
> "node2/xx.xx.xx.x2"; destination host is: "node1":9000;
> +details||
> {code:xml}
> 17/01/23 23:54:32 INFO Executor: Executor is trying to kill task 93.1 in
> stage 1.0 (TID 214)
> 17/01/23 23:54:32 INFO FileOutputCommitter: File Output Committer Algorithm
> version is 1
> 17/01/23 23:54:32 ERROR Executor: Exception in task 93.1 in stage 1.0 (TID
> 214)
> java.io.IOException: Failed on local exception:
> java.nio.channels.ClosedByInterruptException; Host Details : local host is:
> "stobdtserver3/10.224.54.70"; destination host is: "stobdtserver2":9000;
> at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:776)
> at org.apache.hadoop.ipc.Client.call(Client.java:1479)
> at org.apache.hadoop.ipc.Client.call(Client.java:1412)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
> at com.sun.proxy.$Proxy17.create(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.create(ClientNamenodeProtocolTranslatorPB.java:296)
> 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:497)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
> at com.sun.proxy.$Proxy18.create(Unknown Source)
> at
> org.apache.hadoop.hdfs.DFSOutputStream.newStreamForCreate(DFSOutputStream.java:1648)
> at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1689)
> at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1624)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$7.doCall(DistributedFileSystem.java:448)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$7.doCall(DistributedFileSystem.java:444)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:459)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:387)
> at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:911)
> at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:804)
> at
> org.apache.hadoop.mapred.TextOutputFormat.getRecordWriter(TextOutputFormat.java:123)
> at org.apache.spark.SparkHadoopWriter.open(SparkHadoopWriter.scala:90)
> at
> org.apache.spark.rdd.PairRDDFunctions$$anonfun$saveAsHadoopDataset$1$$anonfun$12.apply(PairRDDFunctions.scala:1133)
> at
> org.apache.spark.rdd.PairRDDFunctions$$anonfun$saveAsHadoopDataset$1$$anonfun$12.apply(PairRDDFunctions.scala:1124)
> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:88)
> at org.apache.spark.scheduler.Task.run(Task.scala:114)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:322)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.nio.channels.ClosedByInterruptException
> at
> java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202)
> at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:659)
> at
> org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:192)
> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:531)
> at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:495)
> at
> org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:614)
> at
> org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:712)
> at org.apache.hadoop.ipc.Client$Connection.access$2900(Client.java:375)
> at org.apache.hadoop.ipc.Client.getConnection(Client.java:1528)
> at org.apache.hadoop.ipc.Client.call(Client.java:1451)
> ... 31 more
> 17/01/23 23:54:33 INFO CoarseGrainedExecutorBackend: Driver commanded a
> shutdown
> {code}
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