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Posted to issues@geode.apache.org by "Darrel Schneider (JIRA)" <ji...@apache.org> on 2018/08/09 21:26:00 UTC
[jira] [Comment Edited] (GEODE-5487) Choice of detect read conflict
on transaction commit on a per-region basis.
[ https://issues.apache.org/jira/browse/GEODE-5487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16575310#comment-16575310 ]
Darrel Schneider edited comment on GEODE-5487 at 8/9/18 9:25 PM:
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Do you understand what caused your "dramatically decrease application performance"?
Have you confirmed that changing it to be at the region level dramatically improved performance?
I think it is possible that when read conflicts are detected it could cause concurrent transactions that read the same entry to fail with a conflict exception even though the entry was never written. If this is true then that would be a bug and should be fixed even if this feature request does not happen.
See: https://issues.apache.org/jira/browse/GEODE-5557
was (Author: dschneider):
Do you understand what caused your "dramatically decrease application performance"?
Have you confirmed that changing it to be at the region level dramatically improved performance?
I think it is possible that when read conflicts are detected it could cause concurrent transactions that read the same entry to fail with a conflict exception even though the entry was never written. If this is true then that would be a bug and should be fixed even if this feature request does not happen.
> Choice of detect read conflict on transaction commit on a per-region basis.
> ---------------------------------------------------------------------------
>
> Key: GEODE-5487
> URL: https://issues.apache.org/jira/browse/GEODE-5487
> Project: Geode
> Issue Type: Improvement
> Components: docs, transactions
> Reporter: Eugene Nedzvetsky
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Geode supports detect read conflict(-Dgemfire.detectReadConflicts=true) on transaction commit(see https://geode.apache.org/docs/guide/11/developing/transactions/transaction_semantics.html)
> This functionality can be enabled only on application level. It can dramatically decrease application performance.
> I propose to add ability to setup this property per region basis.
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