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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12060) Address some issues related to ByteBuffer type input/output buffers for raw erasure coders
Date Wed, 30 Sep 2015 17:49:29 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14938121#comment-14938121
] 

Hudson commented on HADOOP-12060:
---------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #439 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/439/])
HADOOP-12060. Fix ByteBuffer usage for raw erasure coders. Contributed (jing9: rev 29495cb8f6b940caa9964c39a290ef233ce1ec7c)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ECBlock.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/AbstractRawErasureCoder.java
* hadoop-common-project/hadoop-common/CHANGES-HDFS-EC-7285.txt
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/erasurecode/TestCoderBase.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/RawErasureEncoder.java
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/erasurecode/BufferAllocator.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/RawErasureDecoder.java
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/erasurecode/rawcoder/TestRawCoderBase.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/RawErasureCoderFactory.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/ECSchema.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/AbstractRawErasureDecoder.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/SchemaLoader.java
* hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/erasurecode/coder/TestErasureCoderBase.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/CodecUtil.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ECChunk.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ECBlockGroup.java


> Address some issues related to ByteBuffer type input/output buffers for raw erasure coders
> ------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12060
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12060
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: io
>            Reporter: Kai Zheng
>            Assignee: Kai Zheng
>             Fix For: HDFS-7285
>
>         Attachments: HADOOP-12060-HDFS-7285-v1.patch, HADOOP-12060-HDFS-7285-v2.patch,
HADOOP-12060-HDFS-7285-v3.patch
>
>
> In HDFS-8319 [~jingzhao] raised some issues about ByteBuffer type input/output buffers
for raw erasure coders:
> * Should support ByteBuffers originated from {{ByteBuffer#slice}} calls;
> * Should clearly spec in Javadoc that no mixing of on-heap buffers and direct buffers
are allowed, and with necessary checking codes ensuring the same type of buffers are used.
> In HDFS-8319 patch by [~jingzhao] there are some good refactoring codes that would be
incorporated here.
> As discussed open this to address the issues separately.



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