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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7279) Use netty to implement DatanodeWebHdfsMethods
Date Tue, 18 Nov 2014 15:17:37 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14216276#comment-14216276
] 

Hudson commented on HDFS-7279:
------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1961 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1961/])
HDFS-7279. Use netty to implement DatanodeWebHdfsMethods. Contributed by Haohui Mai. (wheat9:
rev bf8e4332cb4c33d0287ae6ecca61b335402ac1c4)
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/HdfsWriter.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/resources/OpenEntity.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/DatanodeRegistration.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHdfsFileSystemContract.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/resources/ShortParam.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/resources/IntegerParam.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/resources/LongParam.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/WebHdfsHandler.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/URLDispatcher.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/SimpleHttpProxyHandler.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/ParameterParser.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/ExceptionHandler.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/DataNodeUGIProvider.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/JspHelper.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/SecureDataNodeStarter.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
* hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/DatanodeHttpServer.java


> Use netty to implement DatanodeWebHdfsMethods
> ---------------------------------------------
>
>                 Key: HDFS-7279
>                 URL: https://issues.apache.org/jira/browse/HDFS-7279
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, webhdfs
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>             Fix For: 2.7.0
>
>         Attachments: HDFS-7279.000.patch, HDFS-7279.001.patch, HDFS-7279.002.patch, HDFS-7279.003.patch,
HDFS-7279.004.patch, HDFS-7279.005.patch, HDFS-7279.006.patch, HDFS-7279.007.patch, HDFS-7279.008.patch,
HDFS-7279.009.patch, HDFS-7279.010.patch, HDFS-7279.011.patch, HDFS-7279.012.patch, HDFS-7279.013.patch
>
>
> Currently the DN implements all related webhdfs functionality using jetty. As the current
jetty version the DN used (jetty 6) lacks of fine-grained buffer and connection management,
DN often suffers from long latency and OOM when its webhdfs component is under sustained heavy
load.
> This jira proposes to implement the webhdfs component in DN using netty, which can be
more efficient and allow more finer-grain controls on webhdfs.



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