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Posted to hdfs-issues@hadoop.apache.org by "Haohui Mai (JIRA)" <ji...@apache.org> on 2014/11/04 22:54:34 UTC

[jira] [Updated] (HDFS-7279) Use netty to implement DatanodeWebHdfsMethods

     [ https://issues.apache.org/jira/browse/HDFS-7279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Haohui Mai updated HDFS-7279:
-----------------------------
    Attachment: HDFS-7279.004.patch

> 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
>         Attachments: HDFS-7279.000.patch, HDFS-7279.001.patch, HDFS-7279.002.patch, HDFS-7279.003.patch, HDFS-7279.004.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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