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https://issues.apache.org/jira/browse/CALCITE-2191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16379242#comment-16379242
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James Taylor commented on CALCITE-2191:
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Phoenix has to stick with the Guava that HBase uses which has to stick with the
version that Hadoop uses (which is Guava 12, I believe). In theory, it'd be
possible to have a separate Phoenix client dependency (which would have greater
latitude) than the Phoenix server dependency (which runs in the same JVM as the
HBase region server. HBase 2.0 with Phoenix 5.0 changes the equation some
([~elserj] could speak to that). I wouldn't worry about us, though, but thanks
for asking.
> Drop support for Guava versions earlier than 19
> -----------------------------------------------
>
> Key: CALCITE-2191
> URL: https://issues.apache.org/jira/browse/CALCITE-2191
> Project: Calcite
> Issue Type: Task
> Reporter: slim bouguerra
> Assignee: Julian Hyde
> Priority: Major
> Fix For: 1.16.0
>
>
> Currently, Calcite-1.15.0 version supports Guava versions from 23 to 14.
> Calcite-1.16.0-Snapshot is building against version 19.0.1
> As far I know the only reason we support versions earlier to 19 is Hive
> project depending on Guava 14.0.1 This is not true anymore after
> https://issues.apache.org/jira/browse/HIVE-15393.
> Druid project is still using Guava 16.0.1 but [some
> work|https://groups.google.com/forum/#!topic/druid-development/Dw2Qu1CWbuQ]
> is under review to make sure it is not using deprecated API.
> Thus I think it is time to Drop support for versions earlier than 19
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