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https://issues.apache.org/jira/browse/HBASE-21808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16762952#comment-16762952
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Andrew Purtell commented on HBASE-21808:
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{quote}IIRC back when we were first adding jdk8 support we could run but not
build and we just put that in a note on the section
{quote}
I did some testing with JDK 11 late last year and the whole stack (zookeeper,
hadoop, hbase, and in our case phoenix) exhibited a surprising number of unit
test failures at each layer. Zookeeper results were particularly surprising,
and concerning. I would hesitate to claim everything just works given test
failures at every layer, but that could be the case. There is just no way to
verify it.
Would this change be useful for branch-1 too?
> Ensure we can build with JDK11 targetting JDK8
> ----------------------------------------------
>
> Key: HBASE-21808
> URL: https://issues.apache.org/jira/browse/HBASE-21808
> Project: HBase
> Issue Type: Improvement
> Components: build, community, java
> Affects Versions: 3.0.0
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Priority: Major
> Fix For: 3.0.0, 2.3.0
>
> Attachments: HBASE-21808.0.patch
>
>
> When folks "install a JDK" wether they get JDK11 now will depend on the
> platform (e.g. from homebrew you will get jdk11). For new contributors this
> results in confusing errors on first run.
> Make it so that a non-release build using JDK11 and using our default
> compiler source/target versions of JDK8 can complete.
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