[jira] [Commented] (HBASE-25384) Exclude ZooKeeper from hadoop-common transitive dependency for Hadoop2 profile

["Duo Zhang (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-25384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17247573#comment-17247573 ] 

Duo Zhang commented on HBASE-25384:
-----------------------------------

IIRC the zookeeper community suggested us to upgrade zk dependency to 3.5+ as the 3.4 release line has been dead now. I suggest that since we do not need the new features, if there is no big problem like security issue, we'd better keep the old dependency, which is good for ompatibility, as 3.4 client could still connect to 3.5 or 3.6 server.

So now if we find out that the problem is the 3.4 dependency, I think it is time for us to upgrade to a newer zk version.

Thanks.

> Exclude ZooKeeper from hadoop-common transitive dependency for Hadoop2 profile
> ------------------------------------------------------------------------------
>
>                 Key: HBASE-25384
>                 URL: https://issues.apache.org/jira/browse/HBASE-25384
>             Project: HBase
>          Issue Type: Task
>          Components: build
>    Affects Versions: 2.3.0, 2.4.0
>            Reporter: Nick Dimiduk
>            Priority: Major
>
> During RC validation process for both 2.3.0 and 2.4.0, using [~stack]'s [hbase-downstreamer|https://github.com/saintstack/hbase-downstreamer] project, we see a failure:
> {noformat}
> Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 8.955 sec <<< FAILURE! - in org.hbase.downstreamer.TestHBaseMiniCluster
> testSpinUpMiniHBaseCluster(org.hbase.downstreamer.TestHBaseMiniCluster)  Time elapsed: 8.922 sec  <<< ERROR!
> java.lang.NoClassDefFoundError: org/apache/zookeeper/common/X509Exception$SSLContextException
>         at org.hbase.downstreamer.TestHBaseMiniCluster.testSpinUpMiniHBaseCluster(TestHBaseMiniCluster.java:21)
> Caused by: java.lang.ClassNotFoundException: org.apache.zookeeper.common.X509Exception$SSLContextException
>         at org.hbase.downstreamer.TestHBaseMiniCluster.testSpinUpMiniHBaseCluster(TestHBaseMiniCluster.java:21)
> {noformat}



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