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https://issues.apache.org/jira/browse/HDFS-15313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17158491#comment-17158491
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Hadoop QA commented on HDFS-15313:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m  
0s{color} | {color:blue} Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} docker {color} | {color:red} 18m  
4s{color} | {color:red} Docker failed to build yetus/hadoop:b98299bc57c. 
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|| Subsystem || Report/Notes ||
| JIRA Issue | HDFS-15313 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/13007712/HDFS-15313.branch-2.8.patch
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| Console output | 
https://builds.apache.org/job/PreCommit-HDFS-Build/29512/console |
| versions | git=2.17.1 |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |


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> Ensure inodes in active filesytem are not deleted during snapshot delete
> ------------------------------------------------------------------------
>
>                 Key: HDFS-15313
>                 URL: https://issues.apache.org/jira/browse/HDFS-15313
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: snapshots
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>            Priority: Major
>             Fix For: 3.2.2, 3.3.1, 3.4.0
>
>         Attachments: HDFS-15313.000.patch, HDFS-15313.001.patch, 
> HDFS-15313.branch-2.8.patch, HDFS-15313.branch-3.1.patch
>
>
> After HDFS-13101, it was observed in one of our customer deployments that 
> delete snapshot ends up cleaning up inodes from active fs which can be 
> referred from only one snapshot as the isLastReference() check for the parent 
> dir introduced in HDFS-13101 may return true in certain cases. The aim of 
> this Jira to add a check to ensure if the Inodes are being referred in the 
> active fs , should not get deleted while deletion of snapshot happens.



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