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Posted to hdfs-dev@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2015/03/01 09:09:04 UTC

[jira] [Resolved] (HDFS-1497) Write pipeline sequence numbers should be sequential with no skips or duplicates

     [ https://issues.apache.org/jira/browse/HDFS-1497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer resolved HDFS-1497.
------------------------------------
    Resolution: Unresolved

Cancelling the patch and closing this issue as stale given the amount of time that has passed and the refactoring of the code involved.

> Write pipeline sequence numbers should be sequential with no skips or duplicates
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-1497
>                 URL: https://issues.apache.org/jira/browse/HDFS-1497
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 0.20-append, 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-1497.txt, hdfs-1497.txt, hdfs-1497.txt, hdfs-1497.txt, hdfs-1497.txt
>
>
> In HDFS-895 we discovered that multiple hflush() calls in a row without intervening writes could cause a skip in sequence number. This doesn't seem to have any direct consequences, but we should maintain and assert the invariant that sequence numbers have no gaps or duplicates.



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