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https://issues.apache.org/jira/browse/HDDS-2448?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen O'Donnell updated HDDS-2448:
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Status: Patch Available (was: Open)
> Delete container command should used a thread pool
> --------------------------------------------------
>
> Key: HDDS-2448
> URL: https://issues.apache.org/jira/browse/HDDS-2448
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: Ozone Datanode
> Affects Versions: 0.5.0
> Reporter: Stephen O'Donnell
> Assignee: Stephen O'Donnell
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The datanode receives commands over the heartbeat and queues all commands on
> a single queue in StateContext.commandQueue. Inside DatanodeStateMachine a
> single thread is used to process this queue (started by initCommandHander
> thread) and it passes each command to a ‘handler’. Each command type has its
> own handler.
> The delete container command immediately executes the command on the thread
> used to process the command queue. Therefore if the delete is slow for some
> reason (it must access disk, so this is possible) it could cause other
> commands to backup.
> This should be changed to use a threadpool to queue the deleteContainer
> command, in a similar way to ReplicateContainerCommand.
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