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From "Thomas Weise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (APEXMALHAR-2194) Move WindowListener to somewhere in apex-core
Date Tue, 16 Aug 2016 02:10:21 GMT

    [ https://issues.apache.org/jira/browse/APEXMALHAR-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15422049#comment-15422049
] 

Thomas Weise commented on APEXMALHAR-2194:
------------------------------------------

Not clear what the purpose is and why should it be in core? CheckpointNotificationListener
is an interface which an operator can implement, begin/endWindow are already there.

> Move WindowListener to somewhere in apex-core
> ---------------------------------------------
>
>                 Key: APEXMALHAR-2194
>                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2194
>             Project: Apache Apex Malhar
>          Issue Type: Task
>            Reporter: David Yan
>            Assignee: David Yan
>
> As part of the spillable data structure work, we added the WindowListener interface in
org.apache.apex.malhar.lib.state.spillable package. But it should really be part of core to
represent any component that needs to be notified for beginWindow and endWindow, much like
CheckpointNotificationListener.



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