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From "Lars Hofhansl (Jira)" <>
Subject [jira] [Created] (PHOENIX-5902) Document or fix new compat jar behavior.
Date Sun, 17 May 2020 22:51:00 GMT
Lars Hofhansl created PHOENIX-5902:

             Summary: Document or fix new compat jar behavior.
                 Key: PHOENIX-5902
             Project: Phoenix
          Issue Type: Bug
    Affects Versions: 5.1.0, 4.16.0
            Reporter: Lars Hofhansl

After PHOENIX-5808 (I think), the compat classes are no longer included into Phoenix' server

This causes the HBase regionservers to fail with:
2020-05-15 15:35:36,098 FATAL [RS_OPEN_PRIORITY_REGION-host:16201-1] regionserver.HRegionServer:
ABORTING region server think,16201,1589581955446: The coprocessor org.apache.phoenix.coprocessor.UngroupedAggregateRegionObserver
threw java.lang.NoClassDefFoundError: org/apache/phoenix/compat/hbase/CompatRpcControllerFactory

It is now necessary to copy lib/phoenix-hbase-compat-1.5.0-4.16.0-SNAPSHOT.jar into HBase's
lib directory as well.

The jar in the Phoenix directory is called: phoenix-server-4.16.0-SNAPSHOT-hbase-1.5.jar,
so I do not see why it could not include the compatibility classes.

Alternatively we can rename that jar to just phoenix-server-4.16.0-SNAPSHOT.jar and place
the compatbility jar in Phoenix' top level directory and document the change.

Marking as blocker for 4.16.0, because as is, it will bring HBase down hard upon upgrade if
this is not kept in mind.

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