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https://issues.apache.org/jira/browse/HBASE-20597?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16490757#comment-16490757
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Sean Busbey commented on HBASE-20597:
-------------------------------------
in case the java/maven versions matter for the errors I'm getting before/after
this addendum:
{code}
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d;
2017-10-18T00:58:13-07:00)
Maven home: /usr/share/apache-maven-3.5.2
Java version: 1.8.0_171, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.171-8.b10.el7_5.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-693.21.1.el7.x86_64", arch: "amd64", family:
"unix"
{code}
> Use a lock to serialize access to a shared reference to ZooKeeperWatcher in
> HBaseReplicationEndpoint
> ----------------------------------------------------------------------------------------------------
>
> Key: HBASE-20597
> URL: https://issues.apache.org/jira/browse/HBASE-20597
> Project: HBase
> Issue Type: Bug
> Components: Replication
> Affects Versions: 1.3.2, 1.4.4
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Minor
> Fix For: 3.0.0, 2.1.0, 1.5.0, 1.3.3, 2.0.1, 1.4.5
>
> Attachments: HBASE-20597-branch-1.patch,
> HBASE-20597.addendum.0.patch, HBASE-20597.patch
>
>
> The code that closes down a ZKW that fails to initialize when attempting to
> connect to the remote cluster is not MT safe and can in theory leak
> ZooKeeperWatcher instances. The allocation of a new ZKW and store to the
> reference is not atomic. Might have concurrent allocations with only one
> winning store, leading to leaked ZKW instances.
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