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From "Jing Zhao (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8669) Erasure Coding: handle missing internal block locations in DFSStripedInputStream
Date Mon, 13 Jul 2015 18:46:05 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jing Zhao updated HDFS-8669:
----------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: HDFS-7285
           Status: Resolved  (was: Patch Available)

Thanks for the review, [~walter.k.su]! I've committed this to the feature branch.

> Erasure Coding: handle missing internal block locations in DFSStripedInputStream
> --------------------------------------------------------------------------------
>
>                 Key: HDFS-8669
>                 URL: https://issues.apache.org/jira/browse/HDFS-8669
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>             Fix For: HDFS-7285
>
>         Attachments: HDFS-8669-HDFS-7285.001.patch, HDFS-8669.000.patch, HDFS-8669.001.patch
>
>
> Currently DFSStripedInputStream assumes we always have complete internal block location
information, i.e., we can always get all the DataNodes for a striped block group. In a lot
of scenarios the client cannot get complete block location info, e.g., some internal blocks
are missing and the NameNode has not finished the recovery yet. We should add functionality
to handle missing block locations in DFSStripedInputStream.



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