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https://issues.apache.org/jira/browse/HIVE-24302?focusedWorklogId=528693&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-528693
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ASF GitHub Bot logged work on HIVE-24302:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 28/Dec/20 01:02
Start Date: 28/Dec/20 01:02
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #1612:
URL: https://github.com/apache/hive/pull/1612#issuecomment-751539632
This pull request has been automatically marked as stale because it has not
had recent activity. It will be closed if no further activity occurs.
Feel free to reach out on the [email protected] list if the patch is in
need of reviews.
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Issue Time Tracking
-------------------
Worklog Id: (was: 528693)
Time Spent: 40m (was: 0.5h)
> Cleaner shouldn't run if it can't remove obsolete files
> -------------------------------------------------------
>
> Key: HIVE-24302
> URL: https://issues.apache.org/jira/browse/HIVE-24302
> Project: Hive
> Issue Type: Bug
> Reporter: Karen Coppage
> Assignee: Karen Coppage
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> Example:
> # open txn 5, leave it open (maybe it's a long-running compaction)
> # insert into table t in txns 6, 7 with writeids 1, 2
> # compactor.Worker runs on table t and compacts writeids 1, 2
> # compactor.Cleaner picks up the compaction queue entry, but doesn't delete
> any files because the min global open txnid is 5, which cannot see writeIds
> 1, 2.
> # Cleaner marks the compactor queue entry as cleaned and removes the entry
> from the queue.
> delta_1 and delta_2 will remain in the file system until another compaction
> is run on table t.
> Step 5 should not happen, we should skip calling markCleaned() and leave it
> in the queue in "ready to clean" state. MarkCleaned() should be called only
> after txn 5 is closed and, following that, the cleaner runs successfully.
> This will potentially slow down the cleaner, but on the other hand it won't
> silently "fail" i.e. not do its job.
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