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https://issues.apache.org/jira/browse/HDFS-12282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16142630#comment-16142630
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Anu Engineer commented on HDFS-12282:
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cc: [~nandakumar131] Once delete capability is in, we should support delete in
Corona. We might need to have some sort of deleted block JMX counter on data
node; so we can assert that the block got deleted from the data node.
> Ozone: DeleteKey-4: Block delete via HB between SCM and DN
> ----------------------------------------------------------
>
> Key: HDFS-12282
> URL: https://issues.apache.org/jira/browse/HDFS-12282
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, ozone, scm
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Attachments: Block delete via HB between SCM and DN.png, Block delete
> via HB between SCM and DN v2.png, HDFS-12282-HDFS-7240.001.patch,
> HDFS-12282-HDFS-7240.002.patch, HDFS-12282-HDFS-7240.003.patch,
> HDFS-12282-HDFS-7240.004.patch, HDFS-12282-HDFS-7240.005.patch,
> HDFS-12282.WIP.patch
>
>
> This is the task 3 in the design doc, implements the SCM to datanode
> interactions. Including
> # SCM sends block deletion message via HB to datanode
> # datanode changes block state to deleting when processes the HB response
> # datanode sends deletion ACKs back to SCM
> # SCM handles ACKs and removes blocks in DB
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