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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-19384) Results returned by preAppend hook in a coprocessor are replaced with null from other coprocessor even on bypass
Date Tue, 05 Dec 2017 16:12:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-19384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-19384:
--------------------------
    Release Note: When a coprocessor sets 'bypass', we will skip calling subsequent Coprocessors
that may be stacked-up on the method invocation; e.g. if a prePut has three coprocessors hooked
up, if the first coprocessor decides to set 'bypass', we will not call the two subsequent
coprocessors (this is similar to the 'complete' functionality that was in hbase1, removed
in hbase2).

> 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: stack
>            Priority: Critical
>             Fix For: 2.0.0-beta-1
>
>         Attachments: HBASE-19384.master.001.patch
>
>
> 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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