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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9289) check genStamp when complete file
Date Tue, 27 Oct 2015 17:04:27 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14976735#comment-14976735
] 

Zhe Zhang commented on HDFS-9289:
---------------------------------

bq. the client after updatepipeline with the new gen stamp it later completed file with the
old gen stamp
This looks very strange. But why do you think this happened? Did you see logs that the file
was completed with an old GS?

> check genStamp when complete file
> ---------------------------------
>
>                 Key: HDFS-9289
>                 URL: https://issues.apache.org/jira/browse/HDFS-9289
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Chang Li
>            Assignee: Chang Li
>            Priority: Critical
>         Attachments: HDFS-9289.1.patch, HDFS-9289.2.patch
>
>
> we have seen a case of corrupt block which is caused by file complete after a pipelineUpdate,
but the file complete with the old block genStamp. This caused the replicas of two datanodes
in updated pipeline to be viewed as corrupte. Propose to check genstamp when commit block



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