Hello all, I'm trying to run a job using FlinkML and I'm confused about the source of an error.
The job reads a libSVM formatted file and trains an SVM classifier on it. I've tried this with small datasets and everything works out fine. When trying to run the same job on a large dataset (~11GB uncompressed) however, I get the following error: > java.lang.RuntimeException: Error obtaining the sorted input: Thread > 'SortMerger spilling thread' terminated due to an exception: > java.lang.IndexOutOfBoundsException: Index: 14, Size: 2 > Serialization trace: > indices (org.apache.flink.ml.math.SparseVector) > at > org.apache.flink.runtime.operators.sort.UnilateralSortMerger.getIterator(UnilateralSortMerger.java:619) > at > org.apache.flink.runtime.operators.BatchTask.getInput(BatchTask.java:1089) > at > org.apache.flink.runtime.operators.NoOpDriver.run(NoOpDriver.java:78) > at > org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:489) > at > org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:354) > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:584) > at java.lang.Thread.run(Thread.java:745) > Caused by: java.io.IOException: Thread 'SortMerger spilling thread' > terminated due to an exception: java.lang.IndexOutOfBoundsException: Index: > 14, Size: 2 > Serialization trace: > indices (org.apache.flink.ml.math.SparseVector) > at > org.apache.flink.runtime.operators.sort.UnilateralSortMerger$ThreadBase.run(UnilateralSortMerger.java:800) > Caused by: com.esotericsoftware.kryo.KryoException: > java.lang.IndexOutOfBoundsException: Index: 14, Size: 2 > Serialization trace: > indices (org.apache.flink.ml.math.SparseVector) > at > com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125) > at > com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:528) > at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:761) > at > org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:222) > at > org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.deserialize(KryoSerializer.java:236) > at > org.apache.flink.api.java.typeutils.runtime.kryo.KryoSerializer.copy(KryoSerializer.java:246) > at > org.apache.flink.api.java.typeutils.runtime.TupleSerializerBase.copy(TupleSerializerBase.java:73) > at > org.apache.flink.api.java.typeutils.runtime.TupleSerializerBase.copy(TupleSerializerBase.java:73) > at > org.apache.flink.runtime.operators.sort.NormalizedKeySorter.writeToOutput(NormalizedKeySorter.java:499) > at > org.apache.flink.runtime.operators.sort.UnilateralSortMerger$SpillingThread.go(UnilateralSortMerger.java:1344) > at > org.apache.flink.runtime.operators.sort.UnilateralSortMerger$ThreadBase.run(UnilateralSortMerger.java:796) > Caused by: java.lang.IndexOutOfBoundsException: Index: 14, Size: 2 > at java.util.ArrayList.rangeCheck(ArrayList.java:653) > at java.util.ArrayList.set(ArrayList.java:444) > at > com.esotericsoftware.kryo.util.MapReferenceResolver.setReadObject(MapReferenceResolver.java:38) > at com.esotericsoftware.kryo.Kryo.reference(Kryo.java:823) > at com.esotericsoftware.kryo.Kryo.readObjectOrNull(Kryo.java:731) > at > com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:113) > ... 10 more Any idea what might be causing this? I'm running the job in local mode, 1 TM with 8 slots and ~32GB heap size. All the vectors created by the libSVM loader have the correct size.
