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https://issues.apache.org/jira/browse/KYLIN-4030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16867542#comment-16867542
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ASF GitHub Bot commented on KYLIN-4030:
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nichunen commented on pull request #673: #KYLIN-4030, ResourceStore 
deleteResource by comparing timestamp may be failed
URL: https://github.com/apache/kylin/pull/673
 
 
   
 
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> ResourceStore deleteResource by comparing timestamp may be failed to delete 
> caused by time precision loose
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: KYLIN-4030
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4030
>             Project: Kylin
>          Issue Type: Bug
>            Reporter: PENG Zhengshuai
>            Assignee: PENG Zhengshuai
>            Priority: Minor
>
> In ResourceStore, the interface *deleteResourceImpl(String resPath, long 
> timestamp)* maybe failed to delete the resource because the resource 
> timestamp may lose the precision.
> For example, if we use *$KYLIN_HOME/bin/metastore.sh* to backup from 
> metastore to Local OS filesystem, and restore from local filesystem to 
> metastore. The resource timestamp will lose precision in Millis Second.
> An example here: 
> original timestamp: 1559564381
> after precision lost: 1559564000
> The fix design is to tolerate [0-999] ms difference when comparing the 
> timestamp



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