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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-12351) AsyncWaitOperator should deep copy StreamElement when object reuse is enabled
Date Tue, 30 Apr 2019 12:40:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-12351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ASF GitHub Bot updated FLINK-12351:
-----------------------------------
    Labels: pull-request-available  (was: )

> AsyncWaitOperator should deep copy StreamElement when object reuse is enabled
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-12351
>                 URL: https://issues.apache.org/jira/browse/FLINK-12351
>             Project: Flink
>          Issue Type: Bug
>          Components: API / DataStream
>            Reporter: Jark Wu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.9.0
>
>
> Currently, AsyncWaitOperator directly put the input StreamElement into {{StreamElementQueue}}.
But when object reuse is enabled, the StreamElement is reused, which means the element in
{{StreamElementQueue}} will be modified. As a result, the output of AsyncWaitOperator might
be wrong.
> An easy way to fix this might be deep copy the input StreamElement when object reuse
is enabled, like this: https://github.com/apache/flink/blob/blink/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/async/AsyncWaitOperator.java#L209



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