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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12327) Initialize output buffers with ZERO bytes in erasure coder
Date Thu, 29 Oct 2015 07:14:28 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14979962#comment-14979962
] 

Hudson commented on HADOOP-12327:
---------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #8723 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/8723/])
HADOOP-12327. Initialize output buffers with ZERO bytes in erasure (waltersu4549: rev 5eca6dece67620f990f3306b6caaf09f317b38f6)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/RSRawDecoder.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSStripedOutputStream.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/XORRawEncoder.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/XORRawDecoder.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/ErasureCodingWorker.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/AbstractRawErasureCoder.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/AbstractRawErasureEncoder.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/AbstractRawErasureDecoder.java
* hadoop-common-project/hadoop-common/CHANGES.txt


> Initialize output buffers with ZERO bytes in erasure coder
> ----------------------------------------------------------
>
>                 Key: HADOOP-12327
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12327
>             Project: Hadoop Common
>          Issue Type: Sub-task
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>             Fix For: 3.0.0
>
>         Attachments: HADOOP-12327-HDFS-7285-v1.patch, HADOOP-12327-v2.patch, HADOOP-12327-v3.patch
>
>
> Make sure output buffers are initialized with ZERO bytes in order for:
> * Coder callers won't have to bother doing that;
> * Avoid possible buggy codes if caller forgets doing that;
> * More efficiency, with a shared, length enough empty buffer allocated.



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