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https://issues.apache.org/jira/browse/HBASE-7066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13488818#comment-13488818
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Francis Liu commented on HBASE-7066:
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More specifically if AccessController.preShutdown() throws an IOException,
shutdown should fail since we cannot truly determine whether the shutdown
request is authorized and thus should err on the side of caution and fail the
request.
There may be instances that preShutdown() hook exceptions can be ignored but
that is not the case for AccessController which comes packaged with HBase thus
it would make sense to guarantee that it works as advertised. We can address
the previous scenario by fixing the coprocessor framework.
> Some HMaster coprocessor exceptions are being swallowed in try catch blocks
> ---------------------------------------------------------------------------
>
> Key: HBASE-7066
> URL: https://issues.apache.org/jira/browse/HBASE-7066
> Project: HBase
> Issue Type: Bug
> Components: Coprocessors, security
> Affects Versions: 0.94.2, 0.96.0
> Reporter: Francis Liu
> Assignee: Francis Liu
> Priority: Critical
> Attachments: HBASE-7066_94.patch, HBASE-7066_trunk.patch,
> HBASE-7066_trunk.patch
>
>
> This is causing HMaster.shutdown() and HMaster.stopMaster() to succeed even
> when an AccessDeniedException is thrown.
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