Syinchwun Leo created FLINK-5221:
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Summary: 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: 1.1.3
Environment: SUSE
Reporter: Syinchwun Leo
When window OPERATOR making checkpoint like this:
class WindowStatistic extends WindowFunction[Event, Int, Tuple, TineWindow]
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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