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https://issues.apache.org/jira/browse/HDFS-1350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-1350.
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Resolution: Won't Fix
Based upon context, this appears to have been a 0.20-append issue... and as
such, append got overhauled in 2.x. Closing at won't fix.
> make datanodes do graceful shutdown
> -----------------------------------
>
> Key: HDFS-1350
> URL: https://issues.apache.org/jira/browse/HDFS-1350
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: sam rash
> Assignee: sam rash
>
> we found that the Datanode doesn't do a graceful shutdown and a block can be
> corrupted (data + checksum amounts off)
> we can make the DN do a graceful shutdown in case there are open files. if
> this presents a problem to a timely shutdown, we can make a it a parameter of
> how long to wait for the full graceful shutdown before just exiting
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