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https://issues.apache.org/jira/browse/HDFS-11576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lukas Majercak updated HDFS-11576:
----------------------------------
    Status: Patch Available  (was: In Progress)

> Block recovery will fail indefinitely if recovery time > heartbeat interval
> ---------------------------------------------------------------------------
>
>                 Key: HDFS-11576
>                 URL: https://issues.apache.org/jira/browse/HDFS-11576
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode, hdfs, namenode
>    Affects Versions: 3.0.0-alpha2, 3.0.0-alpha1, 2.7.3, 2.7.2, 2.7.1
>            Reporter: Lukas Majercak
>            Assignee: Lukas Majercak
>            Priority: Critical
>         Attachments: HDFS-11576.001.patch, HDFS-11576.002.patch, 
> HDFS-11576.003.patch, HDFS-11576.004.patch, HDFS-11576.005.patch, 
> HDFS-11576.006.patch, HDFS-11576.007.patch, HDFS-11576.008.patch, 
> HDFS-11576.repro.patch
>
>
> Block recovery will fail indefinitely if the time to recover a block is 
> always longer than the heartbeat interval. Scenario:
> 1. DN sends heartbeat 
> 2. NN sends a recovery command to DN, recoveryID=X
> 3. DN starts recovery
> 4. DN sends another heartbeat
> 5. NN sends a recovery command to DN, recoveryID=X+1
> 6. DN calls commitBlockSyncronization after succeeding with first recovery to 
> NN, which fails because X < X+1
> ... 



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