> On Feb. 13, 2016, 8:35 a.m., Matt wrote: > > ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml, > > line 73 > > <https://reviews.apache.org/r/43557/diff/1/?file=1241153#file1241153line73> > > > > Why does this parameter have to be changed? > > > > It was changed in November 2015: > > https://issues.apache.org/jira/browse/AMBARI-13936 > > > > Just wondering why the failure because of this parameter showed up now > > and not in the last 4 months. > > bhuvnesh chaudhary wrote: > @Dmytro may be able to guide us why this parameter was set to use > EntityGroupFSTimelineStore earlier, but its not working now. > I believe this ATS has been failing since last couple of days and the > status was red, but since service check does not captures it, probably didn't > block anything and was overlooked. > > Sumit Mohanty wrote: > I do not think we should make this change. Latest (HDP-2.3.4+) versions > of HDP needs the value to be EntityGroupFSTimelineStore but older HDP-2.3 > does not work with that. So depending on which version is being deployed you > will see one or the other error. Ambari does not have support for such > changes when its in the 3rd digit releases. So we decided to favor newer > releases. > > bhuvnesh chaudhary wrote: > @Thanks Sumit for the clarification. > Does it mean that https://reviews.apache.org/r/43556/ is also not > required and is done considering HDP-2.3.4+ version ? > > Sumit Mohanty wrote: > Its the same root cause. YARN had to move to latest version of ATS 1.5 as > its feature rich and highly available.
Thanks Sumit for the background, will discard both the jiras. - bhuvnesh ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/43557/#review119144 ----------------------------------------------------------- On Feb. 13, 2016, 6:03 p.m., bhuvnesh chaudhary wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/43557/ > ----------------------------------------------------------- > > (Updated Feb. 13, 2016, 6:03 p.m.) > > > Review request for Ambari, Alejandro Fernandez, Dmytro Sen, jun aoki, Jayush > Luniya, Oleksandr Diachenko, Richard Zang, Sumit Mohanty, and Yusaku Sako. > > > Bugs: AMBARI-15042 > https://issues.apache.org/jira/browse/AMBARI-15042 > > > Repository: ambari > > > Description > ------- > > App Timeline server failed to start due to java.lang.ClassNotFoundException: > Class org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore > > #Snippet from logs: > Server failed in state INITED; cause: java.lang.RuntimeException: > java.lang.RuntimeException: java.lang.ClassNotFoundException: Class > org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore not found > ... > Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: > Class org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore not > found > > There is no class EntityGroupFSTimelineStore available, the value of > parameter yarn.timeline-service.store-class should be set as below: > org.apache.hadoop.yarn.server.timeline.LeveldbTimelineStore > > > Diffs > ----- > > > ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml > 8b6709d > > Diff: https://reviews.apache.org/r/43557/diff/ > > > Testing > ------- > > yes. manual > > > Thanks, > > bhuvnesh chaudhary > >
