Xiaoyu Yao created HDFS-11811:
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             Summary: Ozone: SCM: Support Delete Block
                 Key: HDFS-11811
                 URL: https://issues.apache.org/jira/browse/HDFS-11811
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: scm, ozone
    Affects Versions: HDFS-7240
            Reporter: Xiaoyu Yao
            Assignee: Xiaoyu Yao


This is a follow up of HDFS-11504 to add delete block API. For each deleted 
block, we will remove the original entry for the block and add a tombstone in 
the blockstore db. 

We will add an async thread to process the tombstones and wait for the 
container report confirmation to eventually clean up the tombstones. 



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