[
https://issues.apache.org/jira/browse/HBASE-7205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13527541#comment-13527541
]
Andrew Purtell commented on HBASE-7205:
---------------------------------------
@Ted: I refer you to the discussion on HBASE-6873
Failing closed - disallowing region open if a table CP fails to load and
aborting the RS if a system CP fails to load - should be the default. This is
an area we need to tighten up. I'm glad you're looking at this now.
For more justification see comments at the tail of HBASE-6222, where Stack asks
if coprocessor load failure would expose hidden data, and the response.
Referring again to the discussion on HBASE-6873, it can be ok to tolerate
failure but only if that is explicitly configured.
> Coprocessor classloader is replicated for all regions in the HRegionServer
> --------------------------------------------------------------------------
>
> Key: HBASE-7205
> URL: https://issues.apache.org/jira/browse/HBASE-7205
> Project: HBase
> Issue Type: Bug
> Components: Coprocessors
> Affects Versions: 0.92.2, 0.94.2
> Reporter: Adrian Muraru
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 0.96.0, 0.94.4
>
> Attachments: 7205-v1.txt, 7205-v3.txt, 7205-v4.txt, 7205-v5.txt,
> 7205-v6.txt, 7205-v7.txt, 7205-v8.txt, HBASE-7205_v2.patch
>
>
> HBASE-6308 introduced a new custom CoprocessorClassLoader to load the
> coprocessor classes and a new instance of this CL is created for each single
> HRegion opened. This leads to OOME-PermGen when the number of regions go
> above hundres / region server.
> Having the table coprocessor jailed in a separate classloader is good however
> we should create only one for all regions of a table in each HRS.
--
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
