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https://issues.apache.org/jira/browse/HDFS-12593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16198279#comment-16198279
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Yiqun Lin commented on HDFS-12593:
----------------------------------

Thanks [~szetszwo] for updating the patch. Failure UT seems not related.
I apply the patch in my local (Windows env) and make a check for HDFS-12331, 
the mini cluster can start up and UT runs okay. But catching one error log:
{noformat}
2017-10-10 14:50:01,163 [Datanode State Machine Thread - 0] ERROR 
impl.RaftServerImpl (RaftServerImpl.java:registerMBean(182)) - RaftServer JMX 
bean can't be registered
javax.management.MalformedObjectNameException: Invalid character ':' in value 
part of property
        at javax.management.ObjectName.construct(ObjectName.java:618)
        at javax.management.ObjectName.<init>(ObjectName.java:1382)
        at 
org.apache.ratis.server.impl.RaftServerImpl.registerMBean(RaftServerImpl.java:179)
        at 
org.apache.ratis.server.impl.RaftServerImpl.start(RaftServerImpl.java:171)
        at org.apache.ratis.util.JavaUtils.getAndConsume(JavaUtils.java:67)
        at 
org.apache.ratis.server.impl.RaftServerProxy.start(RaftServerProxy.java:123)
        at 
org.apache.hadoop.ozone.container.common.transport.server.ratis.XceiverServerRatis.start(XceiverServerRatis.java:143)
        at 
org.apache.hadoop.ozone.container.ozoneimpl.OzoneContainer.start(OzoneContainer.java:131)
        at 
org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.start(DatanodeStateMachine.java:126)
        at 
org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.lambda$0(DatanodeStateMachine.java:280)
        at java.lang.Thread.run(Thread.java:745)
{noformat}
Is this a known issue that being resolved in Apache Ratis?
Once this patch is merged, I will close HDFS-12331.

> Ozone: update Ratis to the latest snapshot
> ------------------------------------------
>
>                 Key: HDFS-12593
>                 URL: https://issues.apache.org/jira/browse/HDFS-12593
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>         Attachments: HDFS-12593-HDFS-7240.20171005.patch, 
> HDFS-12593-HDFS-7240.20171006.patch, HDFS-12593-HDFS-7240.20171008.patch, 
> HDFS-12593-HDFS-7240.20171008b.patch, HDFS-12593-HDFS-7240.20171009.patch
>
>
> Apache Ratis has quite a few bug fixes in the latest snapshot (7a5c3ea).  Let 
> update to it.



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