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https://issues.apache.org/jira/browse/PHOENIX-4408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286856#comment-16286856
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Josh Elser commented on PHOENIX-4408:
-------------------------------------

Thanks, [~karanmehta93]!

The other wrinkle we have is dealing with the phoenix-hive integration. If we 
want to support the latest Hive (3.0), we'll have a really hard time on our 
hands keeping Hive 1 and compatibility too. Last I checked, Hive 3.0 dropped 
support for everything prior to Hadoop 3.0 which is why I mention it here too. 
If Hive is playing hardball, we get forced into doing the same.

> Figure out Hadoop version compatibility
> ---------------------------------------
>
>                 Key: PHOENIX-4408
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4408
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: Josh Elser
>            Priority: Blocker
>             Fix For: 5.0.0
>
>
> The 5.x-HBase-2.0 branch is presently incompatible with both Hadoop 2.7 and 
> Hadoop 3.0.
> This stems from PhoenixMetricsSink and LoggingSink both of which extend 
> MetricsSink from Hadoop. Hadoop leaks a commons-configuration class into a 
> method signature and changes the dependency across versions.
> This makes it extremely annoying to work around downstream (we would have to 
> create multiple maven modules to shim around this). We should figure out what 
> compatibility we want to have.  Post PHOENIX-4405, it's only Hadoop3.



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