Wei-Chiu Chuang created HDDS-7764:
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Summary: Potential discrepancy of key creation time may cause
premature open key clean up
Key: HDDS-7764
URL: https://issues.apache.org/jira/browse/HDDS-7764
Project: Apache Ozone
Issue Type: Sub-task
Components: Ozone Manager
Reporter: Wei-Chiu Chuang
When a key is created by OMKeyCreateRequest, its creation time is set by
Time.now(), which is local time.
When OpenKeyCleanupService checks for expired open keys
(OmMetadataManagerImpl.getExpiredOpenKeys()) it uses Instant.now() as the
current time, which is UTC time.
OpenKeyCleanupService may therefore pick up open keys that are not actually
expired due to time zone difference.
This is not currently a critical issue as with the current implemetation, open
keys expires after 7 days, so the time difference isn't that critical. However,
once we implement HDFS-like lease recovery and use the expiration time
comparable to HDFS (1 minute/1 hour) then it is a big problem.
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