[FLINK-5274] LocalInputChannel throws NPE if partition reader is released

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.1.4, 1.2.0
• Component/s: Runtime / Network
• Assignee: Ufuk Celebi
• Reporter: Ufuk Celebi
• Created: 07/Dec/16 12:14
• Updated: 07/Dec/16 16:18
• Resolved: 07/Dec/16 16:18

Description

Reported by rmetzger:

java.lang.NullPointerException
       at org.apache.flink.runtime.io.network.partition.consumer.LocalInputChannel.getNextBuffer(LocalInputChannel.java:185)
       at org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate.getNextBufferOrEvent(SingleInputGate.java:444)
       at org.apache.flink.streaming.runtime.io.BarrierBuffer.getNextNonBlocked(BarrierBuffer.java:152)
       at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:195)
       at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:67)
       at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:267)
       at org.apache.flink.runtime.taskmanager.Task.run(Task.java:638)
       at java.lang.Thread.run(Thread.java:745)

This is most likely caused by the result partition being released after the notifcations have happened.