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https://issues.apache.org/jira/browse/HDFS-17917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18078878#comment-18078878
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ASF GitHub Bot commented on HDFS-17917:
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magnuma3 opened a new pull request, #8475:
URL: https://github.com/apache/hadoop/pull/8475
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### Description of PR
When deleting empty directory, empty list is added to markedDeleteQueue.
I think this is unnecessary. and markedDeleteQueue.size() is O(n) operation,
so it is costly.
### How was this patch tested?
unit test
### For code changes:
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> Fix empty block list enqueue in markedDeleteQueue
> -------------------------------------------------
>
> Key: HDFS-17917
> URL: https://issues.apache.org/jira/browse/HDFS-17917
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: KWON BYUNGCHANG
> Priority: Minor
> Attachments: HDFS-17917.001.patch, HDFS-17917.002.patch
>
>
> When deleting empty directory, empty list is added to markedDeleteQueue.
> I think this is unnecessary. and markedDeleteQueue.size() is O( n )
> operation, so it is costly.
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