[HDDS-8115] Do not use block count to determine if containers are empty - ASF JIRA

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Details

Type: Sub-task
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 1.4.0
Component/s: None
Labels:
- pull-request-available

Description

Ozone currently uses a block count metadata field for each container replica to determine whether it is empty. This counter can be incorrect in some cases and is difficult to maintain. It is only used to determine whether the container is empty. In this case, it would be simpler to have a an isEmpty boolean for each container that starts as false and is set to true when a delete block is processed and the block table is empty.