Level CCA: GC overhead limit exceeded

[imagejan]

When running Level CCA on a few 3D stacks (normalized and scaled to UnsignedByteType) with default settings (from 0 to 255 step 1), I get the following error after a while:

An internal error occurred during: "Compacting resource model".
GC overhead limit exceeded

Here's the stack trace:

java.lang.OutOfMemoryError: GC overhead limit exceeded
    at java.util.HashMap.resize(HashMap.java:703)
    at java.util.HashMap.putVal(HashMap.java:628)
    at java.util.HashMap.put(HashMap.java:611)
    at java.util.HashSet.add(HashSet.java:219)
    at java.util.AbstractCollection.addAll(AbstractCollection.java:344)
    at java.util.HashSet.<init>(HashSet.java:119)
    at net.imglib2.roi.labeling.LabelingMapping.addLabelToSetAtIndex(LabelingMapping.java:253)
    at net.imglib2.roi.labeling.LabelingType.add(LabelingType.java:166)
    at net.imglib2.ops.operation.randomaccessibleinterval.unary.regiongrowing.AbstractRegionGrowing.setLabel(AbstractRegionGrowing.java:257)
    at net.imglib2.ops.operation.randomaccessibleinterval.unary.regiongrowing.AbstractRegionGrowing.compute(AbstractRegionGrowing.java:168)
    at org.knime.knip.suise.node.levelcca.LevelCCA.compute(LevelCCA.java:137)
    at org.knime.knip.suise.node.levelcca.LevelCCANodeFactory$1.compute(LevelCCANodeFactory.java:149)
    at org.knime.knip.suise.node.levelcca.LevelCCANodeFactory$1.compute(LevelCCANodeFactory.java:1)
    at org.knime.knip.base.node.ValueToCellNodeModel$1.getCells(ValueToCellNodeModel.java:385)
    at org.knime.knip.base.node.ValueToCellNodeModel.execute(ValueToCellNodeModel.java:534)
    at org.knime.core.node.NodeModel.executeModel(NodeModel.java:566)
    at org.knime.core.node.Node.invokeFullyNodeModelExecute(Node.java:1146)
    at org.knime.core.node.Node.execute(Node.java:933)
    at org.knime.core.node.workflow.NativeNodeContainer.performExecuteNode(NativeNodeContainer.java:556)
    at org.knime.core.node.exec.LocalNodeExecutionJob.mainExecute(LocalNodeExecutionJob.java:95)
    at org.knime.core.node.workflow.NodeExecutionJob.internalRun(NodeExecutionJob.java:179)
    at org.knime.core.node.workflow.NodeExecutionJob.run(NodeExecutionJob.java:110)
    at org.knime.core.util.ThreadUtils$RunnableWithContextImpl.runWithContext(ThreadUtils.java:328)
    at org.knime.core.util.ThreadUtils$RunnableWithContext.run(ThreadUtils.java:204)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.knime.core.util.ThreadPool$MyFuture.run(ThreadPool.java:123)
    at org.knime.core.util.ThreadPool$Worker.run(ThreadPool.java:246)