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https://issues.apache.org/jira/browse/HIVE-17468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16157142#comment-16157142
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Jesus Camacho Rodriguez commented on HIVE-17468:
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[~bslim], about the avatica dependency, I am not sure, I think it is not
needed. About calcite, a quick check shows that it is used by the record
writer, which is executed by the clients writing the records in Druid and thus
might not have Calcite in their classpath. That must be the reason why it is
included in the uber jar (you can double check if there are other classes that
are not executed at HS2 side that need it, I did not check further).
> Shade and package appropriate jackson version for druid storage handler
> -----------------------------------------------------------------------
>
> Key: HIVE-17468
> URL: https://issues.apache.org/jira/browse/HIVE-17468
> Project: Hive
> Issue Type: Bug
> Reporter: slim bouguerra
> Assignee: Jesus Camacho Rodriguez
> Fix For: 3.0.0
>
> Attachments: HIVE-17468.2.patch, HIVE-17468.patch, hive-druid-deps.txt
>
>
> Currently we are excluding all the jackson core dependencies coming from
> druid. This is wrong in my opinion since this will lead to the packaging of
> unwanted jackson library from other projects.
> As you can see the file hive-druid-deps.txt currently jacskon core is coming
> from calcite and the version is 2.6.3 which is very different from 2.4.6 used
> by druid. This patch exclude the unwanted jars and make sure to bring in
> druid jackson dependency from druid it self.
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