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From "Ryan Wu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-13884) Improve the description of the setting dfs.image.compress
Date Fri, 07 Sep 2018 06:52:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ryan Wu updated HDFS-13884:
---------------------------
    Attachment: HDFS-13884.001.patch

> Improve the description of the setting dfs.image.compress
> ---------------------------------------------------------
>
>                 Key: HDFS-13884
>                 URL: https://issues.apache.org/jira/browse/HDFS-13884
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: documentation
>    Affects Versions: 3.1.1
>            Reporter: Yiqun Lin
>            Assignee: Ryan Wu
>            Priority: Minor
>         Attachments: HDFS-13884.001.patch
>
>
> In HDFS-1435, we introduced a new option to store fsimage compressed. And this can avoid
that It consumes a lot of network bandwidth when SBN do uploads a new fsimage to ANN. When
lots of network bandwidth was consumed, it will affect ANN to deal with normal RPC requests
or sync edit logs.
> This is a very useful setting when our fsimage file is very large. However current description
of this setting is too simple, we can document this more.
> {noformat}
> <property>
>   <name>dfs.image.compress</name>
>   <value>false</value>
>   <description>Should the dfs image be compressed?
>   </description>
> </property>
> {noformat}



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