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From "Lukas Majercak (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12422) Replace DataNode in Pipeline when waiting for Last Packet fails
Date Wed, 14 Mar 2018 20:13:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16399235#comment-16399235
] 

Lukas Majercak commented on HDFS-12422:
---------------------------------------

Added patch 002 after rebasing.

> Replace DataNode in Pipeline when waiting for Last Packet fails
> ---------------------------------------------------------------
>
>                 Key: HDFS-12422
>                 URL: https://issues.apache.org/jira/browse/HDFS-12422
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs, hdfs-client
>            Reporter: Lukas Majercak
>            Assignee: Lukas Majercak
>            Priority: Major
>              Labels: hdfs
>         Attachments: HDFS-12422.001.patch, HDFS-12422.002.patch
>
>
> # Create a file with replicationFactor = 4, minReplicas = 2
> # Fail waiting for the last packet, followed by 2 exceptions when recovering the leftover
pipeline
> # The leftover pipeline will only have one DN and NN will never close such block, resulting
in failure to write
> The block will stay there forever, unable to be replicated, ultimately going missing.



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