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https://issues.apache.org/jira/browse/HBASE-19384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16274031#comment-16274031
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Anoop Sam John commented on HBASE-19384:
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If bypass() is called on a ObserverContext within a bypassable cp hook, we
should just stop calling the remaining CP hooks? So bypass meaning will
become old complete + old bypass(bypass core logic)
> Results returned by preAppend hook in a coprocessor are replaced with null
> from other coprocessor even on bypass
> ----------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-19384
> URL: https://issues.apache.org/jira/browse/HBASE-19384
> Project: HBase
> Issue Type: Bug
> Components: Coprocessors
> Reporter: Rajeshbabu Chintaguntla
> Assignee: Rajeshbabu Chintaguntla
> Priority: Critical
> Fix For: 2.0.0-beta-1
>
>
> Phoenix adding multiple coprocessors for a table and one of them has
> preAppend and preIncrement implementation and bypass the operations by
> returning the results. But the other coprocessors which doesn't have any
> implementation returning null and the results returned by previous
> coprocessor are override by null and always going with default implementation
> of append and increment operations. But it's not the case with old versions
> and works fine on bypass.
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