[jira] [Resolved] (HDFS-7672) Erasure Coding: handle write failure for stripping coding blocks

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-7672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo Nicholas Sze resolved HDFS-7672.
---------------------------------------
       Resolution: Fixed
    Fix Version/s: HDFS-7285
     Hadoop Flags: Reviewed

Thanks Jing and Zhe for reviewing the patches.

I have committed this.

> Erasure Coding: handle write failure for stripping coding blocks
> ----------------------------------------------------------------
>
>                 Key: HDFS-7672
>                 URL: https://issues.apache.org/jira/browse/HDFS-7672
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: hdfs-client
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>             Fix For: HDFS-7285
>
>         Attachments: h7672_20150504.patch, h7672_20150504b.patch, h7672_20150504c.patch, h7672_20150505.patch, h7672_20150505b.patch
>
>
> In *stripping* case, for (6, 3)-Reed-Solomon, a client writes to 6 data blocks and 3 parity blocks concurrently.  We need to handle datanode or network failures when writing a EC BlockGroup.
> We also refactor the existing code in DFSStripedOutputStream and StripedDataStreamer.



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