lokeshj1703 opened a new pull request #1415:
URL: https://github.com/apache/hadoop-ozone/pull/1415


   ## What changes were proposed in this pull request?
   
   KeyDeletingService and OpenKeyCleanupService scan the keys from a particular 
rocksdb table and sends deletion request to SCM. Every thread would scan the 
table and send deletion requests. This can lead to multiple deletion request 
for a particular block. There is currently no way to distribute the keys to be 
deleted amongst multiple threads.
   
   ## What is the link to the Apache JIRA
   
   HDDS-4232
   
   ## How was this patch tested?
   
   This lead to failure in TestBlockDeletion. Please refer 
https://github.com/apache/hadoop-ozone/pull/1121/commits/49b610a9feb54899ae226d3b6f2e36c5f8cc784f
   


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