diff --git a/src/main/java/org/apache/sysds/runtime/compress/colgroup/dictionary/IdentityDictionarySlice.java b/src/main/java/org/apache/sysds/runtime/compress/colgroup/dictionary/IdentityDictionarySlice.java
index 6df7269961c..024a480866e 100644
--- a/src/main/java/org/apache/sysds/runtime/compress/colgroup/dictionary/IdentityDictionarySlice.java
+++ b/src/main/java/org/apache/sysds/runtime/compress/colgroup/dictionary/IdentityDictionarySlice.java
@@ -27,7 +27,6 @@
 
 import org.apache.commons.lang3.NotImplementedException;
 import org.apache.sysds.runtime.DMLRuntimeException;
-import org.apache.sysds.runtime.compress.DMLCompressionException;
 import org.apache.sysds.runtime.compress.colgroup.indexes.IColIndex;
 import org.apache.sysds.runtime.data.SparseBlock;
 import org.apache.sysds.runtime.functionobjects.Builtin;
@@ -203,13 +202,6 @@ public IDictionary sliceOutColumnRange(int idxStart, int idxEnd, int previousNum
 		return getMBDict().sliceOutColumnRange(idxStart, idxEnd, previousNumberOfColumns);
 	}
 
-	@Override
-	public int getNumberOfValues(int ncol) {
-		if(ncol != u - l)
-			throw new DMLCompressionException("Invalid call to get Number of values assuming wrong number of columns");
-		return nRowCol + (withEmpty ? 1 : 0);
-	}
-
 	@Override
 	public boolean containsValue(double pattern) {
 		return pattern == 0.0 || pattern == 1.0;
diff --git a/src/main/java/org/apache/sysds/runtime/compress/colgroup/mapping/AMapToData.java b/src/main/java/org/apache/sysds/runtime/compress/colgroup/mapping/AMapToData.java
index 4edcf6f3bb7..683c231709e 100644
--- a/src/main/java/org/apache/sysds/runtime/compress/colgroup/mapping/AMapToData.java
+++ b/src/main/java/org/apache/sysds/runtime/compress/colgroup/mapping/AMapToData.java
@@ -917,7 +917,7 @@ public void verify() {
 		}
 	}
 
-	protected void lmSparseMatrixRow(SparseBlock sb, final int r, DenseBlock db, final IColIndex colIndexes,
+	public void lmSparseMatrixRow(SparseBlock sb, final int r, DenseBlock db, final IColIndex colIndexes,
 		final IDictionary dict) {
 		if(sb.isEmpty(r))
 			return;