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https://issues.apache.org/jira/browse/GEARPUMP-286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15887053#comment-15887053
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ASF GitHub Bot commented on GEARPUMP-286:
-----------------------------------------
Github user huafengw commented on the issue:
https://github.com/apache/incubator-gearpump/pull/164
Build passed:
https://travis-ci.org/manuzhang/incubator-gearpump/builds/206019494
+1
> 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
>
> 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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