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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16115) Missing security context in RegionObserver coprocessor when a compaction is triggered through the UI
Date Tue, 28 Jun 2016 20:48:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15353688#comment-15353688
] 

Lars Hofhansl commented on HBASE-16115:
---------------------------------------

We've now also seen the same with a compactions triggered from the HBase shell, so the UI
was likely dud. :(
What was reported now is that this appears to work when the cluster/server was recently rebooted.

[~mujtabachohan], can you attach the stack trace you have?

> Missing security context in RegionObserver coprocessor when a compaction is triggered
through the UI
> ----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-16115
>                 URL: https://issues.apache.org/jira/browse/HBASE-16115
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.20
>            Reporter: Lars Hofhansl
>
> We ran into an interesting phenomenon which can easily render a cluster unusable.
> We loaded some tests data into a test table and forced a manual compaction through the
UI. We have some compaction hooks implemented in a region observer, which writes back to another
HBase table when the compaction finishes. We noticed that this coprocessor is not setup correctly,
it seems the security context is missing.
> The interesting part is that this _only_ happens when the compaction is triggere through
the UI. Automatic compactions (major or minor) or when triggered via the HBase shell (folling
a kinit) work fine. Only the UI-triggered compactions cause this issues and lead to essentially
neverending compactions, immovable regions, etc.
> Not sure what exactly the issue is, but I wanted to make sure I capture this.
> [~apurtell], [~ghelmling], FYI.



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