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From "Till Rohrmann (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-5221) Checkpointed workless in Window Operator
Date Mon, 05 Dec 2016 10:38:59 GMT

     [ https://issues.apache.org/jira/browse/FLINK-5221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Till Rohrmann updated FLINK-5221:
---------------------------------
    Affects Version/s: 1.2.0

> Checkpointed workless in Window Operator
> ----------------------------------------
>
>                 Key: FLINK-5221
>                 URL: https://issues.apache.org/jira/browse/FLINK-5221
>             Project: Flink
>          Issue Type: Bug
>          Components: DataStream API
>    Affects Versions: 1.2.0, 1.1.3
>         Environment: SUSE
>            Reporter: Syinchwun Leo
>              Labels: windows
>             Fix For: 1.2.0
>
>   Original Estimate: 12h
>  Remaining Estimate: 12h
>
> When window OPERATOR making checkpoint like this:
> class WindowStatistic extends WindowFunction[Event, Int, Tuple, TimeWindow] with Checkpointed[Option[List[Event]]]
{
>     override def appley().... 
>     override def snapshotState()...
>     override def restoreState()
> }
> Window Operator couldn't invoke user defined function "snapshotState()". In debug model,
line 123 in AbstractUdfStreamOperator.java returns false and can't make user defined state
when checking the window whether is a Checkpointed instance. I think there is something wrong
in userFunction var, it's a ScalaWindowFunctionWrapper object and it couldn't reflect if the
user defined window extend Checkpointed Interface. Actually, the user defined window is kept
in "func" var of userFunction. 



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