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https://issues.apache.org/jira/browse/FLINK-14199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Metzger updated FLINK-14199:
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Component/s: Runtime / Task
> Only use dedicated/named classes for mailbox letters.
> -----------------------------------------------------
>
> Key: FLINK-14199
> URL: https://issues.apache.org/jira/browse/FLINK-14199
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Task
> Reporter: Arvid Heise
> Priority: Major
> Attachments: Screenshot 2019-08-22 at 12.59.59.png
>
>
> Unnamed lambdas make it difficult to debug the code
> !Screenshot 2019-08-22 at 12.59.59.png!
> Note: there are cases of the mailbox usage that need a Future to track when a
> letter is executed and get success/exception result. Current implementation
> (in MailboxExecutor) piggybacks on java.util.concurrent.FutureTask and the
> fact that it implements Java Executor api.
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