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From "Ajay Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12942) Synchronization issue in FSDataSetImpl#moveBlock
Date Thu, 04 Jan 2018 02:00:08 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ajay Kumar updated HDFS-12942:
------------------------------
    Status: Patch Available  (was: Open)

> Synchronization issue in FSDataSetImpl#moveBlock
> ------------------------------------------------
>
>                 Key: HDFS-12942
>                 URL: https://issues.apache.org/jira/browse/HDFS-12942
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Ajay Kumar
>            Assignee: Ajay Kumar
>         Attachments: HDFS-12942.001.patch, HDFS-12942.002.patch, HDFS-12942.003.patch,
HDFS-12942.004.patch
>
>
> FSDataSetImpl#moveBlock  works in following following 3 steps:
> # first creates a new replicaInfo object
> # calls finalizeReplica to finalize it.
> # Calls removeOldReplica to remove oldReplica.
> A client can potentially append to the old replica between step 1 and 2.



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