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https://issues.apache.org/jira/browse/HIVE-24663?focusedWorklogId=603989&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-603989
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ASF GitHub Bot logged work on HIVE-24663:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 31/May/21 07:28
Start Date: 31/May/21 07:28
Worklog Time Spent: 10m
Work Description: maheshk114 commented on pull request #2266:
URL: https://github.com/apache/hive/pull/2266#issuecomment-851266007
> NOTE: I don't think TxnHandler is a good place for this kind of
functionality. TxnHandler is responsible for managing txn metadata ONLY!!
Wouldn't MetaStoreDirectSql be more appropriate here? @pvary what do you think?
The MetaStoreDirectSql does not have framework to handle adding notification
logs within same transaction. That can cause issues in replication if the
notification logs addition fails because of some reason.
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Issue Time Tracking
-------------------
Worklog Id: (was: 603989)
Time Spent: 6h 20m (was: 6h 10m)
> Batch process in ColStatsProcessor for partitions.
> --------------------------------------------------
>
> Key: HIVE-24663
> URL: https://issues.apache.org/jira/browse/HIVE-24663
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: mahesh kumar behera
> Priority: Major
> Labels: performance, pull-request-available
> Time Spent: 6h 20m
> Remaining Estimate: 0h
>
> When large number of partitions (>20K) are processed, ColStatsProcessor runs
> into DB issues.
> {{ db.setPartitionColumnStatistics(request);}} gets stuck for hours together
> and in some cases postgres stops processing.
> It would be good to introduce small batches for stats gathering in
> ColStatsProcessor instead of bulk update.
> Ref:
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/stats/ColStatsProcessor.java#L181
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/stats/ColStatsProcessor.java#L199
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