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Posted to issues@tez.apache.org by "Siddharth Seth (JIRA)" <ji...@apache.org> on 2013/10/09 00:03:41 UTC
[jira] [Created] (TEZ-538) ConcurrentModificationException while
writing heartbeat response
Siddharth Seth created TEZ-538:
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Summary: ConcurrentModificationException while writing heartbeat response
Key: TEZ-538
URL: https://issues.apache.org/jira/browse/TEZ-538
Project: Apache Tez
Issue Type: Bug
Reporter: Siddharth Seth
{code}
2013-10-08 14:48:32,740 WARN [IPC Server handler 24 on 46424] org.apache.hadoop.ipc.Server: Error serializing call response for call heartbeat({ containerId=container_1380753579830_0763_01_000035, requestId=26, startIndex=8, maxEventsToGet=100, taskAttemptIdattempt_1380753579830_0763_1_02_000008_0, eventCount=1 }), rpc version=2, client version=1, methodsFingerPrint=780108658 from 172.19.0.43:55106 Call#29 Retry#0
java.util.ConcurrentModificationException
at java.util.ArrayList$SubList.checkForComodification(ArrayList.java:1129)
at java.util.ArrayList$SubList.size(ArrayList.java:958)
at java.util.Collections$UnmodifiableCollection.size(Collections.java:1055)
at java.util.Collections$UnmodifiableCollection.size(Collections.java:1055)
at org.apache.tez.runtime.api.impl.TezHeartbeatResponse.write(TezHeartbeatResponse.java:73)
at org.apache.hadoop.io.ObjectWritable.writeObject(ObjectWritable.java:202)
at org.apache.hadoop.io.ObjectWritable.writeObject(ObjectWritable.java:128)
at org.apache.hadoop.io.ObjectWritable.write(ObjectWritable.java:82)
at org.apache.hadoop.ipc.Server.setupResponse(Server.java:2318)
at org.apache.hadoop.ipc.Server.access$2900(Server.java:122)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2094)
{code}
Seems ot cause shuffle to block.
Also, have to check what happens to the heartbeat thread in such cases.
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