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https://issues.apache.org/jira/browse/GOBBLIN-2168?focusedWorklogId=941221&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-941221
 ]

ASF GitHub Bot logged work on GOBBLIN-2168:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 31/Oct/24 21:20
            Start Date: 31/Oct/24 21:20
    Worklog Time Spent: 10m 
      Work Description: Will-Lo commented on code in PR #4070:
URL: https://github.com/apache/gobblin/pull/4070#discussion_r1825175801


##########
gobblin-data-management/src/main/java/org/apache/gobblin/data/management/trash/TimeBasedSnapshotCleanupPolicy.java:
##########
@@ -41,6 +42,7 @@ public TimeBasedSnapshotCleanupPolicy(Properties props) {
   @Override
   public boolean shouldDeleteSnapshot(FileStatus snapshot, Trash trash) {
     DateTime snapshotTime = 
Trash.TRASH_SNAPSHOT_NAME_FORMATTER.parseDateTime(snapshot.getPath().getName());
-    return snapshotTime.plusMinutes(this.retentionMinutes).isBeforeNow();
+    // To ensure that the comparison between snapshotTime and the current time 
is done in the same time zone
+    return 
snapshotTime.plusMinutes(this.retentionMinutes).isBefore(DateTime.now(DateTimeZone.UTC));

Review Comment:
   I think it would be more extensible if we had something like the following:
   ```
   public static final String RETENTION_SNAPSHOT_TIMEZONE = 
"gobblin.trash.snapshot.retention.timezone"
   Timezone retentionSnapshotTimezone;
   ...
   this.retentionSnapshotTImezone = 
props.containsKey(RETENTION_SNAPSHOT_TIMEZONE) ? 
Timezone.getTimeZone(props.getProperty(RETENTION_SNAPSHOT_TIMEZONE)) : 
DateTimeZone.getDefault();
   ...
   return 
snapshotTime.plusMinutes(this.retentionMinutes).isBefore(DateTime.now(this.retentionSnapshotTimezone));
   ```
   This allows the retention snapshot be more configurable in the long term and 
more explciit what the behavior is.





Issue Time Tracking
-------------------

    Worklog Id:     (was: 941221)
    Time Spent: 40m  (was: 0.5h)

> Use isBefore(nowInUTC) to compare snapshots with the current time in UTC.
> -------------------------------------------------------------------------
>
>                 Key: GOBBLIN-2168
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-2168
>             Project: Apache Gobblin
>          Issue Type: Improvement
>            Reporter: Wei-Hsiang Lin
>            Priority: Major
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> In existing trash cleaner, the comparison between snapshotTime and the 
> current time is NOT done in the same time zone, this leads to longer hard 
> deletion time due to time zone difference. 
> the fix ensure that the comparison between snapshotTime and the current time 
> is done in the same time zone 



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