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https://issues.apache.org/jira/browse/HDDS-325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16585038#comment-16585038
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Lokesh Jain commented on HDDS-325:
----------------------------------
[~elek] Thanks for reviewing the patch! I have uploaded v4 patch based on our
discussion. The changes related to event can be found in classes
RetriableDatanodeEventWatcher, SCMEvents and StorageContainerManager.
I had to add the changes in EventWatcher as well. The changes add capability of
watching multiple events in a single watcher. The reason I had to add the
change was because currently we have a single event type
RETRIABLE_DATANODE_COMMAND for datanode command events which need to be
retried. If we create multiple event watchers for the same start event and
different completion events then we will be adding multiple handlers(via
multiple event watchers) for the same event type. This would lead to multiple
handlers retrying the start event.
> Add event watcher for delete blocks command
> -------------------------------------------
>
> Key: HDDS-325
> URL: https://issues.apache.org/jira/browse/HDDS-325
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Datanode, SCM
> Reporter: Lokesh Jain
> Assignee: Lokesh Jain
> Priority: Major
> Fix For: 0.2.1
>
> Attachments: HDDS-325.001.patch, HDDS-325.002.patch,
> HDDS-325.003.patch, HDDS-325.004.patch
>
>
> This Jira aims to add watcher for deleteBlocks command. It removes the
> current rpc call required for datanode to send the acknowledgement for
> deleteBlocks.
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