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https://issues.apache.org/jira/browse/HDFS-12000?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chen Liang updated HDFS-12000:
------------------------------
    Attachment: HDFS-12000-HDFS-7240.002.patch

Post v002 patch to fix findbugs, checkstyle and license issues. The failed 
tests are unrelated. All passed except {{TestBufferManager}} and 
{{TestCBlockReadWrite}}, seems these two are failing consistently recently due 
to 
{code}
java.lang.IllegalStateException: Duplicate trace ID. Command with this trace ID 
is already executing. Please ensure that trace IDs are not reused. ID: 
        at 
org.apache.hadoop.scm.XceiverClientHandler.sendCommandAsync(XceiverClientHandler.java:139)
{code}
Also {{TestKeysRatis}} and {{TestKeys}} are known failing tests.

> Ozone: Container : Add key versioning support-1
> -----------------------------------------------
>
>                 Key: HDFS-12000
>                 URL: https://issues.apache.org/jira/browse/HDFS-12000
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Anu Engineer
>            Assignee: Chen Liang
>         Attachments: HDFS-12000-HDFS-7240.001.patch, 
> HDFS-12000-HDFS-7240.002.patch, OzoneVersion.001.pdf
>
>
> The rest interface of ozone supports versioning of keys. This support comes 
> from the containers and how chunks are managed to support this feature. This 
> JIRA tracks that feature. Will post a detailed design doc so that we can talk 
> about this feature.



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