[jira] [Created] (FLINK-18196) flink throws `NullPointerException` when executeCheckpointing

[Shang Yuanchun (Jira)]

Kai Chen created FLINK-18196:
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             Summary: flink throws `NullPointerException` when executeCheckpointing
                 Key: FLINK-18196
                 URL: https://issues.apache.org/jira/browse/FLINK-18196
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Checkpointing
    Affects Versions: 1.10.1, 1.10.0
            Reporter: Kai Chen


I meet checkpoint NPE when executing wordcount example:

java.lang.Exception: Could not perform checkpoint 5505 for operator Source: KafkaTableSource(xxx) -> SourceConversion(table=[xxx, source: [KafkaTableSource(xxx)]], fields=[xxx]) -> Calc(select=[xxx) AS xxx]) -> SinkConversionToTuple2 -> Sink: Elasticsearch6UpsertTableSink(xxx) (1/1).

    at org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpoint(StreamTask.java:802)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$triggerCheckpointAsync$3(StreamTask.java:777)

    at org.apache.flink.streaming.runtime.tasks.StreamTask$$Lambda$228/1024478318.call(Unknown Source)

    at java.util.concurrent.FutureTask.run(FutureTask.java:266)

    at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.run(StreamTaskActionExecutor.java:87)

    at org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:78)

    at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:261)

    at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:186)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:487)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:470)

    at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:707)

    at org.apache.flink.runtime.taskmanager.Task.run(Task.java:532)

    at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.NullPointerException

    at org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.executeCheckpointing(StreamTask.java:1411)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.checkpointState(StreamTask.java:991)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$performCheckpoint$5(StreamTask.java:887)

    at org.apache.flink.streaming.runtime.tasks.StreamTask$$Lambda$229/1010499540.run(Unknown Source)

    at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.performCheckpoint(StreamTask.java:860)

    at org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpoint(StreamTask.java:793)

    ... 12 more



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