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} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira