Pass the opTrackerFactory instead of null.
diff --git a/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterTuplesDataflowHelperFactory.java b/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterTuplesDataflowHelperFactory.java
index 14a9000..2e1cfaa 100644
--- a/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterTuplesDataflowHelperFactory.java
+++ b/hyracks/hyracks-storage-am-lsm-rtree/src/main/java/edu/uci/ics/hyracks/storage/am/lsm/rtree/dataflow/LSMRTreeWithAntiMatterTuplesDataflowHelperFactory.java
@@ -46,7 +46,7 @@
Map<String, String> mergePolicyProperties, ILSMOperationTrackerProvider opTrackerFactory,
ILSMIOOperationSchedulerProvider ioSchedulerProvider, ILSMIOOperationCallbackFactory ioOpCallbackFactory,
ILinearizeComparatorFactory linearizeCmpFactory) {
- super(virtualBufferCacheProvider, mergePolicyFactory, mergePolicyProperties, null, ioSchedulerProvider,
+ super(virtualBufferCacheProvider, mergePolicyFactory, mergePolicyProperties, opTrackerFactory, ioSchedulerProvider,
ioOpCallbackFactory, 1.0);
this.btreeComparatorFactories = btreeComparatorFactories;
this.valueProviderFactories = valueProviderFactories;