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From "Tassapol Athiapinya (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-1131) $ yarn logs should return a message log aggregation is during progress if YARN application is running
Date Fri, 30 Aug 2013 22:18:51 GMT
Tassapol Athiapinya created YARN-1131:
-----------------------------------------

             Summary: $ yarn logs should return a message log aggregation is during progress
if YARN application is running
                 Key: YARN-1131
                 URL: https://issues.apache.org/jira/browse/YARN-1131
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: client
            Reporter: Tassapol Athiapinya
            Priority: Minor
             Fix For: 2.1.1-beta


In the case when log aggregation is enabled, if a user submits MapReduce job and runs $ yarn
logs -applicationId <app ID> while the YARN application is running, the command will
return no message and return user back to shell. It is nice to tell the user that log aggregation
is in progress.

{code}
-bash-4.1$ /usr/bin/yarn logs -applicationId application_1377900193583_0002
-bash-4.1$
{code}

At the same time, if invalid application ID is given, YARN CLI should say that the application
ID is incorrect rather than throwing NoSuchElementException.
{code}
$ /usr/bin/yarn logs -applicationId application_00000
Exception in thread "main" java.util.NoSuchElementException
at com.google.common.base.AbstractIterator.next(AbstractIterator.java:75)
at org.apache.hadoop.yarn.util.ConverterUtils.toApplicationId(ConverterUtils.java:124)
at org.apache.hadoop.yarn.util.ConverterUtils.toApplicationId(ConverterUtils.java:119)
at org.apache.hadoop.yarn.logaggregation.LogDumper.run(LogDumper.java:110)
at org.apache.hadoop.yarn.logaggregation.LogDumper.main(LogDumper.java:255)

{code}


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