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Posted to issues-all@impala.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2019/03/01 18:10:00 UTC
[jira] [Commented] (IMPALA-8240) Event processor should keep trying
if metastore is unavailable
[ https://issues.apache.org/jira/browse/IMPALA-8240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16781946#comment-16781946 ]
ASF subversion and git services commented on IMPALA-8240:
---------------------------------------------------------
Commit eb3afac37a73731042c44c96ed2f47362f926c60 in impala's branch refs/heads/master from Anurag Mantripragada
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=eb3afac ]
IMPALA-8240: Event processor should keep trying when metastore
is unavailable.
When metastore is unavailable, EventProcessor state is changed
to ERROR when there is a MetastoreFetchNotificationException.
After this change, the exception handler will not change the state and
EventProcessor continues trying when metastore is unavailable.
Testing:
Added test in MetastoreEventProcessorTest to check event processor
state is active even after multiple NotificationFetchExceptions
Change-Id: I570a52462e6d3b634b2c227dfcb98e20ad2a0023
Reviewed-on: http://gerrit.cloudera.org:8080/12601
Reviewed-by: Impala Public Jenkins <im...@cloudera.com>
Tested-by: Impala Public Jenkins <im...@cloudera.com>
> Event processor should keep trying if metastore is unavailable
> --------------------------------------------------------------
>
> Key: IMPALA-8240
> URL: https://issues.apache.org/jira/browse/IMPALA-8240
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Vihang Karajgaonkar
> Assignee: Vihang Karajgaonkar
> Priority: Minor
>
> Currently, if metastore is restarted (or is unresponsive), event processor throws {{MetastoreFetchNotificationException}} and changes its state to {{ERROR}} state. Event processor does not get restarted until either a reset() is called or catalogd is restarted. Event processor should keep polling for new events so that things will automatically start working when metastore is back up.
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