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https://issues.apache.org/jira/browse/HIVE-23819?focusedWorklogId=456269&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-456269
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ASF GitHub Bot logged work on HIVE-23819:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 08/Jul/20 17:53
Start Date: 08/Jul/20 17:53
Worklog Time Spent: 10m
Work Description: pvary commented on pull request #1230:
URL: https://github.com/apache/hive/pull/1230#issuecomment-655666860
Can we have microbenchmarks for serializing/deserializing for edge cases at
least?
* Everything is one big range
* Everything is single event
* Everything is 2 long range
Thanks,
Peter
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Issue Time Tracking
-------------------
Worklog Id: (was: 456269)
Time Spent: 20m (was: 10m)
> Use ranges in ValidReadTxnList serialization
> --------------------------------------------
>
> Key: HIVE-23819
> URL: https://issues.apache.org/jira/browse/HIVE-23819
> Project: Hive
> Issue Type: Improvement
> Reporter: Peter Varga
> Assignee: Peter Varga
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Time to time we see a case, when the open / aborted transaction count is high
> and often the aborted transactions come in continues ranges.
> When the transaction count goes high the serialization / deserialization to
> hive.txn.valid.txns conf gets slower and produces a large config value.
> Using ranges in the string representation can mitigate the issue somewhat.
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