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https://issues.apache.org/jira/browse/APEXMALHAR-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15429138#comment-15429138
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David Yan commented on APEXMALHAR-2193:
---------------------------------------

[~brightchen] Thanks for the suggestion. This would mean piling up a lot of 
garbage if adding and deleting are done very frequently, which could be the 
case for session windows. If we go the route you suggested, we would probably 
need to do some kind of garbage collection.

> Implement SpillableByteArrayListMultimapImpl.remove(@Nullable Object key, 
> @Nullable Object value)
> -------------------------------------------------------------------------------------------------
>
>                 Key: APEXMALHAR-2193
>                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2193
>             Project: Apache Apex Malhar
>          Issue Type: Sub-task
>            Reporter: David Yan
>            Assignee: David Yan
>
> This is needed by SpillableSessionWindowedStorage. It needs a way to remove 
> the session window given the key in its internal keyToWindowsMap



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