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https://issues.apache.org/jira/browse/HDDS-8665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17755691#comment-17755691
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Hemant Kumar edited comment on HDDS-8665 at 8/17/23 8:45 PM:
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Hi [~ritesh]
I removed the newbie label. It has much more complication than just 
implementing CopyObject.
We need to change the logic of SnapshotChain update. Currently we update it 
[here|https://github.com/apache/ozone/blob/master/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/response/snapshot/OMSnapshotPurgeResponse.java#L149-L176]
 but it doesn't update the cache. Which is causing assertion failure in test. 


was (Author: JIRAUSER297350):
Hi [~ritesh]
I removed the newbie label. It has much more complication than just 
implementing CopyObject.


> OmDBSnapshotInfoCodec.copyObject(..) does not follow the general contract of 
> copy.
> ----------------------------------------------------------------------------------
>
>                 Key: HDDS-8665
>                 URL: https://issues.apache.org/jira/browse/HDDS-8665
>             Project: Apache Ozone
>          Issue Type: Sub-task
>          Components: OM, Snapshot
>            Reporter: Tsz-wo Sze
>            Assignee: Hemant Kumar
>            Priority: Critical
>         Attachments: HDDS-8665_bug.patch
>
>
> OmDBSnapshotInfoCodec.copyObject(..) is a shallow copy -- it simply returns 
> the same object.  However, if it is changed to return a deep copy as shown in 
> the second comment, TestOMSnapshotDeleteRequest and 
> TestOMSnapshotPurgeRequestAndResponse will fail.  These two tests depend on 
> the behavior that, after copying, changing one copy will also change the 
> other copy.



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