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https://issues.apache.org/jira/browse/HBASE-19384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16272897#comment-16272897
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Josh Elser commented on HBASE-19384:
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[~rajeshbabu] any chance you could share the specifics on how the coprocessors
are set up in which you see this? Or, if you really want to go the extra mile,
distill it down to a generic test case?
Assuming there is a bug anyways, having a clear example of what is going wrong
would be good both for identifying the problem as well as preventing a
regression later :)
> 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
> Fix For: 3.0.0, 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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