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https://issues.apache.org/jira/browse/HDFS-17297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17798456#comment-17798456
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ASF GitHub Bot commented on HDFS-17297:
---------------------------------------

hadoop-yetus commented on PR #6369:
URL: https://github.com/apache/hadoop/pull/6369#issuecomment-1862225690

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6369/2/artifact/out/patch-unit-hadoop-hdfs-project_hadoop-hdfs.txt)
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> The NameNode should remove block from the BlocksMap if the block is marked as 
> deleted.
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-17297
>                 URL: https://issues.apache.org/jira/browse/HDFS-17297
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haiyang Hu
>            Assignee: Haiyang Hu
>            Priority: Major
>              Labels: pull-request-available
>
> When call internalReleaseLease method:
> {code:java}
> boolean internalReleaseLease(
> ...
> int minLocationsNum = 1;
> if (lastBlock.isStriped()) {
>   minLocationsNum = ((BlockInfoStriped) lastBlock).getRealDataBlockNum();
> }
> if (uc.getNumExpectedLocations() < minLocationsNum &&
>     lastBlock.getNumBytes() == 0) {
>   // There is no datanode reported to this block.
>   // may be client have crashed before writing data to pipeline.
>   // This blocks doesn't need any recovery.
>   // We can remove this block and close the file.
>   pendingFile.removeLastBlock(lastBlock);
>   finalizeINodeFileUnderConstruction(src, pendingFile,
>       iip.getLatestSnapshotId(), false); 
> ...
> }
> {code}
>  if the condition `uc.getNumExpectedLocations() < minLocationsNum && 
> lastBlock.getNumBytes() == 0` is met during the execution of UNDER_RECOVERY 
> logic, the block is removed from the block list in the inode file and marked 
> as deleted. 
> However it is not removed from the BlocksMap, it may cause memory leak.
> Therefore it is necessary to remove the block from the BlocksMap at this 
> point as well.



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