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https://issues.apache.org/jira/browse/HDFS-9262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15042471#comment-15042471
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Xiaobing Zhou commented on HDFS-9262:
-------------------------------------
Thanks [~arpitagarwal] for review.
1. It's not possible cast DataNode#data to FsDatasetImpl that is package
visible class within org.apache.hadoop.hdfs.server.datanode.fsdataset.impl,
unless, we make it public.
2. Extending FsDatasetSpi to Reconfigurable actually changed the interface as
overall so that ExternalDatasetImpl and ExternalDatasetImpl all need to
implement it although they don't need it.
Is it good to relax the visibility? Thanks.
> Reconfigure DN lazy writer interval on the fly
> ----------------------------------------------
>
> Key: HDFS-9262
> URL: https://issues.apache.org/jira/browse/HDFS-9262
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: 2.7.0
> Reporter: Xiaobing Zhou
> Assignee: Xiaobing Zhou
> Attachments: HDFS-9262.001.patch
>
>
> This is to reconfigure
> {code}
> dfs.datanode.lazywriter.interval.sec
> {code}
> without restarting DN.
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