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https://issues.apache.org/jira/browse/HADOOP-12746?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15145212#comment-15145212
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Jing Zhao commented on HADOOP-12746:
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Thanks for working on this, Arpit! The patch looks good to me. +1.
The patch also makes some change on DataNode.java. Do you think we should move
the jira to HDFS?
> ReconfigurableBase should update the cached configuration
> ---------------------------------------------------------
>
> Key: HADOOP-12746
> URL: https://issues.apache.org/jira/browse/HADOOP-12746
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.8.0
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Attachments: HADOOP-12476.02.patch, HADOOP-12746.01.patch,
> HADOOP-12746.03.patch, HADOOP-12746.04.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 values queried via {{getConf().get(...)}} can be outdated.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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