[jira] [Created] (FLINK-17805) InputProcessorUtil doesn't handle indexes for multiple inputs operators correctly

["Piotr Nowojski (Jira)" <ji...@apache.org>]

Piotr Nowojski created FLINK-17805:
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             Summary: InputProcessorUtil doesn't handle indexes for multiple inputs operators correctly
                 Key: FLINK-17805
                 URL: https://issues.apache.org/jira/browse/FLINK-17805
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Network
            Reporter: Piotr Nowojski
             Fix For: 1.11.0


This can cause {{ArrayIndexOutOfBound}} exception when input gates passed to {{InputProcessorUtil#createCheckpointedInputGatePair}} have lower IDs in the second input compared to input gates from the first one.

{noformat}
Caused by: java.lang.ArrayIndexOutOfBoundsException: 7
	at org.apache.flink.streaming.runtime.io.CheckpointBarrierUnaligner$ThreadSafeUnaligner.notifyBufferReceived(CheckpointBarrierUnaligner.java:328)
	at org.apache.flink.runtime.io.network.partition.consumer.LocalInputChannel.getNextBuffer(LocalInputChannel.java:218)
	at org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.waitAndGetNextData(SingleInputGate.java:637)
	at org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.getNextBufferOrEvent(SingleInputGate.java:615)
	at org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.pollNext(SingleInputGate.java:603)
	at org.apache.flink.runtime.taskmanager.InputGateWithMetrics.pollNext(InputGateWithMetrics.java:105)
	at org.apache.flink.streaming.runtime.io.CheckpointedInputGate.pollNext(CheckpointedInputGate.java:110)
	at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:136)
	at org.apache.flink.streaming.runtime.io.StreamTwoInputProcessor.processInput(StreamTwoInputProcessor.java:178)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:341)
	at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:206)
	at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:196)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:553)
	at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:526)
	at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:713)
	at org.apache.flink.runtime.taskmanager.Task.run(Task.java:539)
	at java.lang.Thread.run(Thread.java:748)
{noformat}




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