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https://issues.apache.org/jira/browse/HIVE-26242?focusedWorklogId=772684&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-772684
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ASF GitHub Bot logged work on HIVE-26242:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 20/May/22 06:48
Start Date: 20/May/22 06:48
Worklog Time Spent: 10m
Work Description: veghlaci05 opened a new pull request, #3303:
URL: https://github.com/apache/hive/pull/3303
### What changes were proposed in this pull request?
This PR introduces a new component (CompactionHeartbeatService) to
centralize the compaction transaction heartbeating, and reduce resource usage.
It consist of a Scheduled exevutor service and a MetaStoreClient pool.
### Why are the changes needed?
The heartbeat of the compaction txns are wasting resources by having a
dedicated separate thread and MetaStore client for every compaction transaction.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Manually and through unit tests.
Issue Time Tracking
-------------------
Worklog Id: (was: 772684)
Remaining Estimate: 0h
Time Spent: 10m
> Compaction heartbeater improvements
> -----------------------------------
>
> Key: HIVE-26242
> URL: https://issues.apache.org/jira/browse/HIVE-26242
> Project: Hive
> Issue Type: Improvement
> Reporter: László Végh
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The Compaction heartbeater should be improved the following ways:
> * The metastore clients should be reused between heartbeats and closed only
> at the end, when the transaction ends
> * Instead of having a dedicated heartbeater thread for each Compaction
> transaction, there should be shared a heartbeater executor where the
> heartbeat tasks can be scheduled/submitted.
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