Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
Description
Noticed sporadic DAG failures in our ec2 test environment.
Tasks failing with that:
2015-06-17 11:19:51,064 INFO [main] impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s). 2015-06-17 11:19:51,064 INFO [main] impl.MetricsSystemImpl: TezTask metrics system started 2015-06-17 11:19:51,259 INFO [TezChild] task.ContainerReporter: Attempting to fetch new task 2015-06-17 11:20:11,311 INFO [TezChild] ipc.Client: Retrying connect to server: ip-10-149-102-100.ec2.internal/10.149.102.100:60630. Already tried 0 time(s); maxRetries=5 2015-06-17 11:20:31,312 INFO [TezChild] ipc.Client: Retrying connect to server: ip-10-149-102-100.ec2.internal/10.149.102.100:60630. Already tried 1 time(s); maxRetries=5 2015-06-17 11:20:51,313 INFO [TezChild] ipc.Client: Retrying connect to server: ip-10-149-102-100.ec2.internal/10.149.102.100:60630. Already tried 2 time(s); maxRetries=5 2015-06-17 11:21:11,314 INFO [TezChild] ipc.Client: Retrying connect to server: ip-10-149-102-100.ec2.internal/10.149.102.100:60630. Already tried 3 time(s); maxRetries=5 2015-06-17 11:21:31,315 INFO [TezChild] ipc.Client: Retrying connect to server: ip-10-149-102-100.ec2.internal/10.149.102.100:60630. Already tried 4 time(s); maxRetries=5 2015-06-17 11:21:51,317 INFO [main] impl.MetricsSystemImpl: Stopping TezTask metrics system... 2015-06-17 11:21:51,318 INFO [main] impl.MetricsSystemImpl: TezTask metrics system stopped. 2015-06-17 11:21:51,318 INFO [main] impl.MetricsSystemImpl: TezTask metrics system shutdown complete.
From the AppMaster:
Created DAGAppMaster for application appattempt_1434553606315_0022_000001 2015-06-17 11:19:43,655 INFO [Socket Reader #1 for port 60630] ipc.Server: Starting Socket Reader #1 for port 60630 2015-06-17 11:19:43,656 INFO [Socket Reader #1 for port 31001] ipc.Server: Starting Socket Reader #1 for port 31001 2015-06-17 11:19:43,713 WARN [ServiceThread:org.apache.tez.dag.history.HistoryEventHandler] conf.Configuration: mapred-site.xml:an attempt to override final parameter: mapreduce.cluster.local.dir; Ignoring.
hitesh mentioned its likely to be the TaskAttemptListenerImpTezDag which starts on that port. Would be nice if the port(-range) can be configured!!!