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Posted to commits@cassandra.apache.org by "Jeff Jirsa (JIRA)" <ji...@apache.org> on 2018/09/06 04:41:00 UTC
[jira] [Updated] (CASSANDRA-14696)
DecayingEstimatedHistogramReservoir.EstimatedHistogramReservoirSnapshot
returns wrong value for size() and incorrectly calculates count
[ https://issues.apache.org/jira/browse/CASSANDRA-14696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeff Jirsa updated CASSANDRA-14696:
-----------------------------------
Labels: 4.0-pre-rc-bugs (was: )
> DecayingEstimatedHistogramReservoir.EstimatedHistogramReservoirSnapshot returns wrong value for size() and incorrectly calculates count
> ----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-14696
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14696
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Ariel Weisberg
> Assignee: Ariel Weisberg
> Priority: Major
> Labels: 4.0-pre-rc-bugs
> Fix For: 4.0
>
>
> It appears to return the wrong value for no reason. There isn't a single instance in the code base where we use size. There is an internal count that is calculated, but it is calculated over an empty array.
> Fix both of these bugs and then use the size to only populate read and write latency values used for speculation when there are actual samples being used.
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