[jira] [Created] (HDDS-7764) Potential discrepancy of key creation time may cause premature open key clean up

["Wei-Chiu Chuang (Jira)" <ji...@apache.org>]

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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