diff --git a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/MetadataNode.java b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/MetadataNode.java
index a3f736e..48401eb 100644
--- a/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/MetadataNode.java
+++ b/asterix-metadata/src/main/java/edu/uci/ics/asterix/metadata/MetadataNode.java
@@ -1005,9 +1005,9 @@
             try {
                 while (rangeCursor.hasNext()) {
                     rangeCursor.next();
-                    ITupleReference ref = rangeCursor.getTuple();
-                    Dataset ds = valueExtractor.getValue(jobId, rangeCursor.getTuple());
-                    datasetId = ((Dataset) valueExtractor.getValue(jobId, rangeCursor.getTuple())).getDatasetId();
+                    final ITupleReference ref = rangeCursor.getTuple();
+                    final Dataset ds = valueExtractor.getValue(jobId, ref);
+                    datasetId = ds.getDatasetId();
                     if (mostRecentDatasetId < datasetId) {
                         mostRecentDatasetId = datasetId;
                     }