sodonnel opened a new pull request, #4435:
URL: https://github.com/apache/ozone/pull/4435

   ## What changes were proposed in this pull request?
   
   For an EC container which has 2 replicas for the same index, with one 
decommissioning and one in_maintenance, the decommission logic in 
ECUnderReplicationHandler can send a command for the replica, and then the 
maintenance logic can send another replication command for the same container 
to a different target. If they both succeed it will likely result in over 
replication.
   
   To solve this, we probably need to adjust the pending ops between each stage 
of the processing, so as then the maintenance logic would be "fixed by pending" 
and avoid sending the second command.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-8172
   
   ## How was this patch tested?
   
   Existing tests modified.
   


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