Stephan Ewen created FLINK-2076:
-----------------------------------
Summary: Bug in re-openable hash join
Key: FLINK-2076
URL: https://issues.apache.org/jira/browse/FLINK-2076
Project: Flink
Issue Type: Bug
Components: Local Runtime
Affects Versions: 0.9
Reporter: Stephan Ewen
It happens deterministically in my machine with the following setup:
TaskManager:
- heap size: 512m
- network buffers: 4096
- slots: 32
Job:
- ConnectedComponents
- 100k vertices
- 1.2m edges
--> this gives around 260 m Flink managed memory, across 32 slots is 8MB per
slot, with several mem consumers in the job, makes the iterative hash join
out-of-core
{code}
java.lang.RuntimeException: Hash Join bug in memory management:
Memory buffers leaked.
at
org.apache.flink.runtime.operators.hash.MutableHashTable.buildTableFromSpilledPartition(MutableHashTable.java:733)
at
org.apache.flink.runtime.operators.hash.MutableHashTable.prepareNextPartition(MutableHashTable.java:508)
at
org.apache.flink.runtime.operators.hash.ReOpenableMutableHashTable.prepareNextPartition(ReOpenableMutableHashTable.java:167)
at
org.apache.flink.runtime.operators.hash.MutableHashTable.nextRecord(MutableHashTable.java:541)
at
org.apache.flink.runtime.operators.hash.NonReusingBuildSecondHashMatchIterator.callWithNextKey(NonReusingBuildSecondHashMatchIterator.java:102)
at
org.apache.flink.runtime.operators.AbstractCachedBuildSideMatchDriver.run(AbstractCachedBuildSideMatchDriver.java:155)
at
org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:496)
at
org.apache.flink.runtime.iterative.task.AbstractIterativePactTask.run(AbstractIterativePactTask.java:139)
at
org.apache.flink.runtime.iterative.task.IterationIntermediatePactTask.run(IterationIntermediatePactTask.java:92)
at
org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:362)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:560)
at java.lang.Thread.run(Thread.java:745)
{code}
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