[jira] [Issue Comment Deleted] (HDFS-11576) Block recovery will fail indefinitely if recovery time > heartbeat interval

["Lukas Majercak (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-11576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukas Majercak updated HDFS-11576:
----------------------------------
    Comment: was deleted

(was: In the logs, the rejection of commitBlockSynchronization on the NN is:

{code}
INFO  ipc.Server (Server.java:run(2200)) - IPC Server handler 1 on 26435, call org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol.commitBlockSynchronization from 127.0.0.1:26520 Call#554 Retry#0
java.io.IOException: The recovery id 1059 does not match current recovery id 1069 for block BP-325268981-10.123.116.86-1490315990951:blk_1073741825_1001
{code})

> 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: 2.7.1, 2.7.2, 2.7.3, 3.0.0-alpha1, 3.0.0-alpha2
>            Reporter: Lukas Majercak
>            Assignee: Lukas Majercak
>            Priority: Critical
>         Attachments: 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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