Ivan Andika created HDDS-14841:
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Summary: Run createFakeDirIfShould outside the lock to prevent OM
stuck
Key: HDDS-14841
URL: https://issues.apache.org/jira/browse/HDDS-14841
Project: Apache Ozone
Issue Type: Improvement
Reporter: Ivan Andika
Assignee: Ivan Andika
We have encountered large incidents caused by createFakeDirIfShould in
getFileStatus since createFakeDirIfShould creates a RocksDB iterator and it
might take a long time when the keyTable has a lot of tombstones. This causes
OM to be stuck since writes on the same bucket will be held, which in turns
held all the pending write transactions in OM Ratis applier.
Let's move createFakeDirIfShould outside of the lock to prevent this. There is
some tradeoff in terms of consistency, but since createFakeDirIfShould should
not be the normal case, we can contend with this.
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