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https://issues.apache.org/jira/browse/HIVE-19077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16419159#comment-16419159
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Vihang Karajgaonkar commented on HIVE-19077:
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This would be a good improvement. Thanks [~szita] for taking this up.
> Handle duplicate ptests requests standing in queue at the same time
> -------------------------------------------------------------------
>
> Key: HIVE-19077
> URL: https://issues.apache.org/jira/browse/HIVE-19077
> Project: Hive
> Issue Type: Improvement
> Components: Testing Infrastructure
> Reporter: Adam Szita
> Assignee: Adam Szita
> Priority: Major
>
> I've been keeping on eye on our {{PreCommit-HIVE-Build}} job, and what I
> noticed that sometimes huge queues can build up, that contain jira's more
> than once. (Yesterday I've seen a queue of 40, having 31 distinct jiras..)
> Simple scenario is that I upload a patch, it gets queued for ptest (already
> long queue), and 3 hours later I will update it, re-upload and re-queue. Now
> the current ptest infra seems to be smart enough to always deal with the
> latest patch, so what will happen is that the same patch will be tested 2
> times (with ~3 hours) diff, most probably with same result.
> I propose we do some deduplication - if ptest starts running the request for
> Jira X, then it can take a look on the current queue, and see if X is there
> again. If so, it can skip for now, it will be picked up later anyway.
> In practice this means that if you reconsider your patch and update it, your
> original place in the queue will be gone (like as a penalty for changing it),
> but overall it saves resources for the whole community.
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