Details
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Bug
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Status: Closed
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Critical
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Resolution: Fixed
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0.5.0, 0.6.0, 0.7.0
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None
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None
Description
I am running a yarn cluster on AWS. The slave nodes (NMs) are all configured to listen on private DNS. For example, a sample node manager listens on ip-10-16-141-168.ec2.internal:8042.
When I'm trying to run a Tez job (even simple ones like select count
from nation) - they fail because child tasks are unable to connect to the AM. The issue is they are trying to connect to the IP instead of the private DNS. Here's a sample log line (couple of them added by me for debugging):
2015-07-21 17:08:21,919 INFO [main] task.TezChild: TezChild starting 2015-07-21 17:08:22,310 INFO [main] task.TezChild: Using socket factory class: org.apache.hadoop.net.StandardSocketFactory 2015-07-21 17:08:22,336 INFO [main] task.TezChild: PID, containerIdentifier: 3699, container_1437498369268_0001_01_000002 2015-07-21 17:08:22,418 INFO [main] Configuration.deprecation: fs.default.name is deprecated. Instead, use fs.defaultFS 2015-07-21 17:08:23,025 INFO [main] task.TezChild: Got host:port: 10.16.141.168:37949 2015-07-21 17:08:23,035 INFO [main] task.TezChild: address variables: 10.16.141.168:37949 2015-07-21 17:08:23,143 INFO [TezChild] task.ContainerReporter: Attempting to fetch new task 2015-07-21 17:08:24,201 INFO [TezChild] ipc.Client: Retrying connect to server: 10.16.141.168/10.16.141.168:37949. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=50, sleepTime=1000 MILLISECONDS) 2015-07-21 17:08:25,202 INFO [TezChild] ipc.Client: Retrying connect to server: 10.16.141.168/10.16.141.168:37949. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=50, sleepTime=1000 MILLISECONDS) 2015-07-21 17:08:26,757 INFO [TezChild] ipc.Client: Retrying connect to server: 10.16.141.168/10.16.141.168:37949. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=50, sleepTime=1000 MILLISECONDS) 2015-07-21 17:08:27,758 INFO [TezChild] ipc.Client: Retrying connect to server: 10.16.141.168/10.16.141.168:37949. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=50, sleepTime=1000 MILLISECONDS)
AM is listening at the right address. But TezChild is receiving the IP address instead of the private DNS.
AM logs:
2015-07-21 18:09:27,906 INFO [ServiceThread:org.apache.tez.dag.app.TaskAttemptListenerImpTezDag] app.TaskAttemptListenerImpTezDag: Listening at address: ip-10-234-2-80.ec2.internal:49967
TezChild logs:
2015-07-21 18:09:35,353 INFO [main] task.TezChild: TezChild starting
2015-07-21 18:09:35,379 INFO [main] task.TezChild: Args: 10.234.2.80,49967,container_1437501941642_0001_01_000002,application_1437501941642_0001,1
2015-07-21 18:09:35,770 INFO [main] task.TezChild: Using socket factory class: org.apache.hadoop.net.StandardSocketFactory
2015-07-21 18:09:35,785 INFO [main] task.TezChild: PID, containerIdentifier: 8670, container_1437501941642_0001_01_000002
2015-07-21 18:09:35,864 INFO [main] Configuration.deprecation: fs.default.name is deprecated. Instead, use fs.defaultFS
2015-07-21 18:09:36,403 INFO [main] task.TezChild: Got host:port: 10.234.2.80:49967
2015-07-21 18:09:36,413 INFO [main] task.TezChild: address variables: 10.234.2.80:49967