[FLINK-1026] WordCount POJO fails with null pointer exception

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.6-incubating
• Fix Version/s: 0.6-incubating
• Assignee: Aljoscha Krettek
• Reporter: Stephan Ewen
• Created: 14/Jul/14 16:45
• Updated: 28/Feb/19 14:29
• Resolved: 17/Jul/14 14:37

Description

When run from the command line on larger inputs, the WordCountPOJO fails.

java.lang.NullPointerException
	at org.apache.flink.api.java.typeutils.runtime.PojoComparator.compare(PojoComparator.java:271)
	at org.apache.flink.runtime.operators.sort.NormalizedKeySorter.compareRecords(NormalizedKeySorter.java:319)
	at org.apache.flink.runtime.operators.sort.NormalizedKeySorter.compare(NormalizedKeySorter.java:357)
	at org.apache.flink.runtime.operators.sort.QuickSort.sortInternal(QuickSort.java:96)
	at org.apache.flink.runtime.operators.sort.QuickSort.sort(QuickSort.java:52)
	at org.apache.flink.runtime.operators.sort.QuickSort.sort(QuickSort.java:56)
	at org.apache.flink.runtime.operators.ReduceCombineDriver.sortAndCombine(ReduceCombineDriver.java:166)
	at org.apache.flink.runtime.operators.ReduceCombineDriver.run(ReduceCombineDriver.java:149)
	at org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:509)
	at org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:374)
	at org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:265)
	at java.lang.Thread.run(Thread.java:745)