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Posted to commits@cassandra.apache.org by "Brandon Williams (Jira)" <ji...@apache.org> on 2021/02/22 13:54:00 UTC
[jira] [Updated] (CASSANDRA-16465) Increased Read Latency With
Cassandra >= 3.11.7
[ https://issues.apache.org/jira/browse/CASSANDRA-16465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brandon Williams updated CASSANDRA-16465:
-----------------------------------------
Bug Category: Parent values: Degradation(12984)Level 1 values: Performance Bug/Regression(12997)
Complexity: Normal
Component/s: Legacy/Local Write-Read Paths
Discovered By: User Report
Fix Version/s: 3.11.11
Severity: Normal
Status: Open (was: Triage Needed)
> Increased Read Latency With Cassandra >= 3.11.7
> -----------------------------------------------
>
> Key: CASSANDRA-16465
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16465
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Local Write-Read Paths
> Reporter: Ahmed ELJAMI
> Priority: Normal
> Fix For: 3.11.11
>
>
> After upgrading Cassandra from 3.11.3 to 3.11.9, Cassandra read latency 99% increased significantly. Getting back to 3.11.3 immediately fixed the issue.
> I have observed "SStable reads" increases after upgrading to 3.11.9.
> The same behavior was observed by some other users: [https://www.mail-archive.com/user@cassandra.apache.org/msg61247.html]
> According to Paulo Motta's comment, this behavior may be caused by https://issues.apache.org/jira/browse/CASSANDRA-15690 which was introduced on 3.11.7 and removed an optimization that may cause a correctness issue when there are partition deletions.
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