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https://issues.apache.org/jira/browse/HDFS-1477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220442#comment-15220442
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Xiaobing Zhou commented on HDFS-1477:
-------------------------------------
The release note has been added.
> Support reconfiguring dfs.heartbeat.interval and
> dfs.namenode.heartbeat.recheck-interval without NN restart
> -----------------------------------------------------------------------------------------------------------
>
> Key: HDFS-1477
> URL: https://issues.apache.org/jira/browse/HDFS-1477
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: 2.7.0
> Reporter: Patrick Kling
> Assignee: Xiaobing Zhou
> Fix For: 2.9.0
>
> Attachments: HDFS-1477-HDFS-9000.006.patch,
> HDFS-1477-HDFS-9000.007.patch, HDFS-1477-HDFS-9000.008.patch,
> HDFS-1477-HDFS-9000.009.patch, HDFS-1477.005.patch, HDFS-1477.2.patch,
> HDFS-1477.3.patch, HDFS-1477.4.patch, HDFS-1477.patch
>
>
> Modify NameNode to implement the interface Reconfigurable proposed in
> HADOOP-7001. This would allow us to change certain configuration properties
> without restarting the name node.
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