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https://issues.apache.org/jira/browse/GEARPUMP-286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Manu Zhang resolved GEARPUMP-286.
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Resolution: Fixed
Fix Version/s: 0.8.3
> Different WindowAndGroups could end up in one due to hashCode collision
> ------------------------------------------------------------------------
>
> Key: GEARPUMP-286
> URL: https://issues.apache.org/jira/browse/GEARPUMP-286
> Project: Apache Gearpump
> Issue Type: Bug
> Components: streaming
> Affects Versions: 0.8.2
> Reporter: Manu Zhang
> Assignee: Manu Zhang
> Fix For: 0.8.3
>
>
> Currently, we use a {{TreeMap}} to store and sort {{WindowAndGroup}}, which
> requires {{WindowAndGroup}} to be {{Comparable}}. However, {{Group}} is not
> and not supposed to be so I hacked with its {{hashCode}} for comparison. That
> is wrong since two {{Group}} could have identical {{hashCode}}.
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