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https://issues.apache.org/jira/browse/FLINK-33549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17788967#comment-17788967
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Shuai Xu commented on FLINK-33549:
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I'd like to fix this. Could you assign it to me? [~luoyuxia]
> Exception "Factory does not implement interface YieldingOperatorFactory"
> thrown in batch mode
> ----------------------------------------------------------------------------------------------
>
> Key: FLINK-33549
> URL: https://issues.apache.org/jira/browse/FLINK-33549
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Runtime
> Reporter: luoyuxia
> Priority: Major
>
> When run a job in batch, it throws the following exception
> {code:java}
> java.lang.NullPointerException: Factory does not implement interface
> org.apache.flink.streaming.api.operators.YieldingOperatorFactory
> at
> org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:104)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperatorFactory.getMailboxExecutor(AbstractStreamOperatorFactory.java:67)
> at
> org.apache.flink.table.runtime.operators.AsyncWaitOperatorFactory.createStreamOperator(AsyncWaitOperatorFactory.java:79)
> at
> org.apache.flink.table.runtime.operators.multipleinput.TableOperatorWrapper.createOperator(TableOperatorWrapper.java:115)
> at
> org.apache.flink.table.runtime.operators.multipleinput.MultipleInputStreamOperatorBase.createAllOperators(MultipleInputStreamOperatorBase.java:259)
> at
> org.apache.flink.table.runtime.operators.multipleinput.MultipleInputStreamOperatorBase.<init>(MultipleInputStreamOperatorBase.java:88)
> at
> org.apache.flink.table.runtime.operators.multipleinput.BatchMultipleInputStreamOperator.<init>(BatchMultipleInputStreamOperator.java:48)
> at
> org.apache.flink.table.runtime.operators.multipleinput.BatchMultipleInputStreamOperatorFactory.createStreamOperator(BatchMultipleInputStreamOperatorFactory.java:51)
> at
> org.apache.flink.streaming.api.operators.StreamOperatorFactoryUtil.createOperator(StreamOperatorFactoryUtil.java:81)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:212)
> at
> org.apache.flink.streaming.runtime.tasks.RegularOperatorChain.<init>(RegularOperatorChain.java:60)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.restoreInternal(StreamTask.java:756)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:743)
> at
> org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:959)
> at
> org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:928)
> at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:751)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:567)
> at java.lang.Thread.run(Thread.java:834) {code}
>
> When I disable multiple-input by setting
> table.optimizer.multiple-input-enabled = false, it works then.
> Should be introduced by FLINK-23621.
> [In
> here|https://github.com/apache/flink/blob/a1aed4f877099328d4833f8a2781d2edbaaddc70/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/StreamOperatorFactoryUtil.java#L60],
> when the operator factory is instanceof YieldingOperatorFactory, it will set
> mailbox executor. But when it's
> BatchMultipleInputStreamOperatorFactory, althogh it'll still set mailbox
> executor but it won't set the mailbox executor. for the operators wrapped by
> the BatchMultipleInputStreamOperator. Then the exception is thrown.
>
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