Janus Chow created HDDS-5472:
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Summary: Old versions of location in OmKeyLocationInfoGroup causes
OOM of OM
Key: HDDS-5472
URL: https://issues.apache.org/jira/browse/HDDS-5472
Project: Apache Ozone
Issue Type: Improvement
Reporter: Janus Chow
Assignee: Janus Chow
Currently the keyLocation of different versions is stored redundantly in
OmKeyInfo.
* OmKeyInfo:
** keyLocationVersions: List<OmKeyLocationInfoGroup> stores different
versions of information in a list.
* OmKeyLocationInfoGroup:
** locationVersionMap: Map<Long, List<OmKeyLocationInfo>> stores different
versions of location in a map.
If the versions are large, the redundent location is causing the large GC
overhead for OM, in our cluster, the OM even crashes because of OOM.
This ticket is to remove the redundant location information to keep OM healthy.
Attached the OmKeyInfo of a key with 549 versions.
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