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From "Demeter Sztanko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6565) Use jackson instead jetty json in hdfs-client
Date Thu, 28 Jan 2016 17:12:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15121913#comment-15121913
] 

Demeter Sztanko commented on HDFS-6565:
---------------------------------------

We are experiencing performance degradation of webhdfs, when listing directories with large
amount of files (>1000). Our profiling is indicating that most of resources are spent within
Jackson library.

Do you think replacing jetty with jackson could be the cause of this?

> Use jackson instead jetty json in hdfs-client
> ---------------------------------------------
>
>                 Key: HDFS-6565
>                 URL: https://issues.apache.org/jira/browse/HDFS-6565
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Haohui Mai
>            Assignee: Akira AJISAKA
>             Fix For: 2.7.0
>
>         Attachments: HDFS-6565-002.patch, HDFS-6565-003.patch, HDFS-6565-004.patch, HDFS-6565-005.patch,
HDFS-6565.patch
>
>
> hdfs-client should use Jackson instead of jetty to parse JSON.



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