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https://issues.apache.org/jira/browse/HIVE-24075?focusedWorklogId=508310&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-508310
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ASF GitHub Bot logged work on HIVE-24075:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 06/Nov/20 00:39
Start Date: 06/Nov/20 00:39
Worklog Time Spent: 10m
Work Description: github-actions[bot] commented on pull request #1463:
URL: https://github.com/apache/hive/pull/1463#issuecomment-722729411
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: 508310)
Time Spent: 20m (was: 10m)
> Optimise KeyValuesInputMerger
> -----------------------------
>
> Key: HIVE-24075
> URL: https://issues.apache.org/jira/browse/HIVE-24075
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Comparisons in KeyValueInputMerger can be reduced.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/tools/KeyValuesInputMerger.java#L165|https://github.infra.cloudera.com/CDH/hive/blob/cdpd-master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/tools/KeyValuesInputMerger.java#L165]
> [https://github.infra.cloudera.com/CDH/hive/blob/cdpd-master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/tools/KeyValuesInputMerger.java#L150|https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/tools/KeyValuesInputMerger.java#L150]
> If the reader comparisons in the queue are same, we could reuse
> "{{nextKVReaders}}" in next subsequent iteration instead of doing the
> comparison all over again.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/tez/tools/KeyValuesInputMerger.java#L178]
>
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