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https://issues.apache.org/jira/browse/CALCITE-4259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17198098#comment-17198098
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Julian Hyde commented on CALCITE-4259:
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I'm not sure what the official CI tests. I test each JDK (8 .. 15) against a
couple of random Guava versions in the range 19 to 29 every night.
Guava-related errors are very rare; if it builds, it tends to run. The fact
that the Cassandra adapter can't run on Guava 27 or higher is an exception to
that rule.
> Support JDK 15
> --------------
>
> Key: CALCITE-4259
> URL: https://issues.apache.org/jira/browse/CALCITE-4259
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.26.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> JDK 15 is now GA (released 2020/09/15). We should support it (and OpenJDK 15)
> as a build- and run-time platform.
> Also:
> * Upgrade to latest Guava (guava-29.0-jre, released on 2020/04/13);
> * Upgrade log4j2 to latest (2.13.3, release 2020/05/10);
> * Remove log4j (we're on the last release, 1.2.17, which was 2012/05/26, but
> I assume the project is now unsupported and dead).
> If there are any other important upgrades to be done before 1.26, please add
> them here.
> Must fix in next release (1.26) or justify why not in this thread.
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