Robert Metzger created FLINK-1922:
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Summary: Failed task deployment causes NPE on input split assignment
Key: FLINK-1922
URL:
https://issues.apache.org/jira/browse/FLINK-1922 Project: Flink
Issue Type: Bug
Components: JobManager
Affects Versions: 0.9
Reporter: Robert Metzger
The input split assignment code is returning {null} if the Task has failed, which is causing a NPE.
We should improve our error handling / reporting in that situation.
{code}
13:12:31,002 INFO org.apache.flink.yarn.ApplicationMaster$$anonfun$2$$anon$1 - Status of job c0b47ce41e9a85a628a628a3977705ef (Flink Java Job at Tue Apr 21 13:10:36 UTC 2015) changed to FAILING Cannot deploy task - TaskManager not responding..
....
13:12:47,591 ERROR org.apache.flink.runtime.operators.RegularPactTask - Error in task code: CHAIN DataSource (at userMethod (org.apache.flink.api.java.io.AvroInputFormat)) -> FlatMap (FlatMap at main(UserClass.java:111)) (20/50)
java.lang.RuntimeException: Requesting the next InputSplit failed.
at org.apache.flink.runtime.taskmanager.TaskInputSplitProvider.getNextInputSplit(TaskInputSplitProvider.java:88)
at org.apache.flink.runtime.operators.DataSourceTask$1.hasNext(DataSourceTask.java:337)
at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:136)
at org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:217)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.NullPointerException
at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:301)
at org.apache.flink.runtime.taskmanager.TaskInputSplitProvider.getNextInputSplit(TaskInputSplitProvider.java:83)
... 4 more
13:12:47,595 INFO org.apache.flink.runtime.taskmanager.Task - CHAIN DataSource (at SomeMethod (org.apache.flink.api.java.io.AvroInputFormat)) -> FlatMap (FlatMap at main(SomeClass.java:111)) (20/50) switched to FAILED : java.lang.RuntimeException: Requesting the next InputSplit failed.
at org.apache.flink.runtime.taskmanager.TaskInputSplitProvider.getNextInputSplit(TaskInputSplitProvider.java:88)
at org.apache.flink.runtime.operators.DataSourceTask$1.hasNext(DataSourceTask.java:337)
at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:136)
at org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:217)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.NullPointerException
at java.io.ByteArrayInputStream.<init>(ByteArrayInputStream.java:106)
at org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:301)
at org.apache.flink.runtime.taskmanager.TaskInputSplitProvider.getNextInputSplit(TaskInputSplitProvider.java:83)
... 4 more
{code}
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