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Siddharth Seth commented on YARN-1131: -------------------------------------- [~djp], if you don't mind, I'd like to take this over - would be good to get it into the next release. > $ 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 > Assignee: Junping Du > Priority: Minor > Fix For: 2.1.2-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} -- This message was sent by Atlassian JIRA (v6.1#6144)