prathmesh12-coder opened a new pull request, #10967:
URL: https://github.com/apache/ozone/pull/10967

   ## What changes were proposed in this pull request?
   
   - Currently, the datanode will finalize a block if it encounters PutBlock 
with eof flag set. There should only be one PutBlock with eof flag since 
PutBlock is not idempotent. Currently this is not caught which can cause issue 
like [HDDS-12007](https://issues.apache.org/jira/browse/HDDS-12007) to not be 
detected.
   
   - Therefore, we need to assert that once we encounter block EOF, there will 
not be any more writes on that block.
    We should throw exception (or ignore) if there are some writes after EOF. 
This change ignores them and logs a warning.
   
   - Added `eofBlockCache` on open/closing containers to track blocks finalized 
by an EOF PutBlock.
   
   - In `BlockManagerImpl#persistPutBlock`, ignored subsequent writes on those 
blocks.
   
   ## What is the link to the Apache JIRA
   
   https://issues.apache.org/jira/browse/HDDS-15723
   
   ## How was this patch tested?
   
   - Added unit tests for simple and incremental writes.
   
   - CI : https://github.com/prathmesh12-coder/ozone/actions/runs/31173426474 


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