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https://issues.apache.org/jira/browse/HDFS-14480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Feilong He updated HDFS-14480:
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Description: Currently, DataNode has #shutdown method to tackle something
before shutdown. But its shutdown hook does't call this method. In HDFS-14401
for HDFS persistent memory cache optimization, we added clean cache logic in
DN's #shutdown method. And we expect DN will clean up cache during shut down by
stop-dfs.sh/stop-dfs.cmd, which depends on this Jira's patch. (was: Currently,
DataNode has #shutdown method to tackle something before shutdown. But its
shutdown hook does't call this method. In HDFS-14401 for HDFS persistent memory
cache optimization, we added clean cache logic in #shutdown method. And we
expect DN will clean up cache during DN shutdown, which depends on this Jira's
patch.)
> Shut down DataNode gracefully when responding to stop-dfs.sh/stop-dfs.cmd
> -------------------------------------------------------------------------
>
> Key: HDFS-14480
> URL: https://issues.apache.org/jira/browse/HDFS-14480
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Feilong He
> Assignee: Feilong He
> Priority: Major
>
> Currently, DataNode has #shutdown method to tackle something before shutdown.
> But its shutdown hook does't call this method. In HDFS-14401 for HDFS
> persistent memory cache optimization, we added clean cache logic in DN's
> #shutdown method. And we expect DN will clean up cache during shut down by
> stop-dfs.sh/stop-dfs.cmd, which depends on this Jira's patch.
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