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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7672) Erasure Coding: consolidate streamer coordination logic and handle failure when writing striped blocks
Date Wed, 30 Sep 2015 16:01:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14937342#comment-14937342
] 

Hudson commented on HDFS-7672:
------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8548 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/8548/])
HDFS-7672. Handle write failure for stripping blocks and refactor the (zhezhang: rev 220ca960bce970d5969b9af570a3ce43360b7e2b)
* hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSUtil.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSStripedOutputStream.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSOutputStream.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSStripedOutputStreamWithFailure.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/StripedDataStreamer.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSStripedOutputStream.java


> Erasure Coding: consolidate streamer coordination logic and handle failure when writing
striped 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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