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https://issues.apache.org/jira/browse/PHOENIX-5902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17132688#comment-17132688
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Lars Hofhansl commented on PHOENIX-5902:
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[~apurtell] what we discussed earlier this week.
I still think it would be immensely powerful if we could ship Phoenix
distribution that has tiny compat jars for the specific versions of HBase.
Also note that for the client jar, the HBase versions do not have to match
exactly - the HBase-1.x client will work with any HBase server >= 1.x. So we
*could* ship at least a single Phoenix 4 distribution and build the client with
earliest HBase version we want to support (1.3?)
> Document or fix new compat jar behavior.
> ----------------------------------------
>
> Key: PHOENIX-5902
> URL: https://issues.apache.org/jira/browse/PHOENIX-5902
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.16.0
> Reporter: Lars Hofhansl
> Assignee: Istvan Toth
> Priority: Blocker
> Fix For: 4.16.0
>
> Attachments: PHOENIX-5902.4.x.v1.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> After PHOENIX-5808 (I think), the compat classes are no longer included in
> Phoenix' server jar.
> 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.
> (Of course a release would not have SNAPSHOT in the name...)
> 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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