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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-9801) ReconfigurableBase should update the cached configuration
Date Fri, 12 Feb 2016 20:40:18 GMT

    [ https://issues.apache.org/jira/browse/HDFS-9801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15145259#comment-15145259

Arpit Agarwal commented on HDFS-9801:

Thanks for the code review [~jingzhao]. I moved this to HDFS.

The checkstyle issues are bogus. I will rerun all the failed tests locally to make sure they
are unrelated and commit this shortly.

> ReconfigurableBase should update the cached configuration
> ---------------------------------------------------------
>                 Key: HDFS-9801
>                 URL: https://issues.apache.org/jira/browse/HDFS-9801
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.8.0
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HADOOP-12476.02.patch, HADOOP-12746.01.patch, HADOOP-12746.03.patch,
> {{ReconfigurableBase#startReconfigurationTask}} does not update its cached configuration
after a property is reconfigured. This means that configuration values queried via {{getConf().get(...)}}
can be outdated. One way to fix it is {{ReconfigurableBase#reconfigurePropertyImpl}} returns
the new effective value of the config setting and caller i.e. ReconfigurableBase will use
it to update the configuration.
> See discussion on HDFS-7035 for more background.

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