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https://issues.apache.org/jira/browse/PHOENIX-6333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17269134#comment-17269134
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ASF GitHub Bot commented on PHOENIX-6333:
-----------------------------------------

virajjasani commented on a change in pull request #1103:
URL: https://github.com/apache/phoenix/pull/1103#discussion_r561700592



##########
File path: pom.xml
##########
@@ -1577,6 +1581,7 @@
         <hbase.version>${hbase-2.3.runtime.version}</hbase.version>
         <hbase.thirdparty.version>3.3.0</hbase.thirdparty.version>
         <zookeeper.version>3.5.7</zookeeper.version>
+        <hadoop.version>3.1.3</hadoop.version>

Review comment:
       Same here https://github.com/apache/hbase/blob/rel/2.3.3/pom.xml#L1341 




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> Hbase versions older than 2.4.0 are incompatible with Hadoop 3.1.4
> ------------------------------------------------------------------
>
>                 Key: PHOENIX-6333
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-6333
>             Project: Phoenix
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 5.1.0
>            Reporter: Istvan Toth
>            Assignee: Istvan Toth
>            Priority: Blocker
>
> In PHOENIX-6326 I've upgraded Hadoop to 3.1.4 to solve a test failure caused 
> by older Jetty versions.
> It turns out that only HBase 2.4 is compatible with the new Jetty in 3.1.4, 
> (it uses a shaded jetty), but earlier versions are not.
> Unfortunately, this happened right after we swicthed Yetus to to use Hbase 
> 2.4, so the procommit checks didn't catch this.
> Technically, neither the Phoenix client or server runtime artifacts are 
> affected by this, as the server doesn't include HBase, and the client doesn' 
> use jetty.
> Considering that any pre-2.4.0 HBase version is incompatible with Hadoop 
> 3.1.4, I think that the best option to use Hadoop 3.1.3 in those profiles.
> As any pre-2.4.0 HBase is incompatible (at least on ther server side) with 
> the problematic Java releases, 
> we are not really losing anything by not supporting building releases with 
> this profiles in Phoenix.
> Furthermore, it turns out that even minor hadoop releases are not ABI 
> compatible.
> Rebuilding HBase 2.1 with hadoop.profile=3.0, which uses Hadoop 3.0.3, and 
> then building Phoenix with Hadoop 3.1.3 will result in the usual 
> Class<->Interface errors.
> While building Hbase 2.1 with _hadoop.profile=3.0 hadoop.version=3.1.3_ seems 
> to resolve this, I think that sticiking with same Hadoop minor version that 
> HBase defaults to in each profile will be simpler, and more likely to be 
> compatible with user environments.



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