Istvan Toth created PHOENIX-6730:
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             Summary: Revert protobuf-java version to 2.5.0
                 Key: PHOENIX-6730
                 URL: https://issues.apache.org/jira/browse/PHOENIX-6730
             Project: Phoenix
          Issue Type: Bug
          Components: connectors, spark-connector
    Affects Versions: connectors-6.0.0
            Reporter: Istvan Toth


Recently a dependabot commit has landed on connectors that upgrades the version 
of protobuf-java to 3.6.1

I think that we should revert that.

Part of the HBase 2 public API is that the public coprocessors use HBase 2 for 
communication.
See [https://hbase.apache.org/book.html#cpeps]

Using unshaded 3.6.1 in the connector breaks that contract.

The shaded connector artifacts do not include protobuf-java, so the change is 
effectively a NOOP. However, in case someone depends on the core artifact, the 
change in the protobuf-java version may cause problems.

[~rajeshbabu]  I know that you have added the explicit dependency for the table 
metadata broadcast featre, and that you've applied the dependabot PR, but 
I think that we should stick to the protobuf pulled in used by HBase.



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