Rajat Jain created TEZ-2630:
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Summary: TezChild receives IP address instead of FQDN
Key: TEZ-2630
URL: https://issues.apache.org/jira/browse/TEZ-2630
Project: Apache Tez
Issue Type: Bug
Affects Versions: 0.7.0
Reporter: Rajat Jain
Assignee: Hitesh Shah
Priority: Critical
{code}
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):
{code}
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)
{code}
AM is listening at the right address. But TezChild is receiving the IP address
instead of the private DNS.
AM logs:
{code}
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
{code}
TezChild logs:
{code}
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
{code}
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