fix merge Recode

Author: Baunsgaard

src/main/java/org/apache/sysds/runtime/frame/data/columns/Array.java

@@ -205,10 +205,11 @@ private HashMapToInt<T> parallelCreateRecodeMap(int estimate, ExecutorService po
 	 * @param target The target object to merge the two maps into
 	 * @param from   The Map to take entries from.
 	 */
-	protected static <T> void mergeRecodeMaps(Map<T, Integer> target, Map<T, Integer> from) {
+	protected static <T> void mergeRecodeMaps(HashMapToInt<T> target, HashMapToInt<T> from) {
 		final List<T> fromEntriesOrdered = new ArrayList<>(Collections.nCopies(from.size(), null));
-		for(Map.Entry<T, Integer> e : from.entrySet())
-			fromEntriesOrdered.set(e.getValue() - 1, e.getKey());
+		from.forEach((k,v) -> {
+			fromEntriesOrdered.set(v - 1, k);
+		});
 		int id = target.size();
 		for(T e : fromEntriesOrdered) {
 			if(target.putIfAbsent(e, id) == null)

src/test/java/org/apache/sysds/performance/README.md

@@ -82,3 +82,10 @@ Binary Operations
 ```bash
 java -jar -agentpath:$HOME/Programs/profiler/lib/libasyncProfiler.so=start,event=cpu,file=temp/log.html -XX:+UseNUMA target/systemds-3.3.0-SNAPSHOT-perf.jar 1006 500
 ```
+
+
+transform encode 
+
+```bash
+java -jar -agentpath:$HOME/Programs/profiler/lib/libasyncProfiler.so=start,event=cpu,file=temp/log.html -XX:+UseNUMA target/systemds-3.3.0-SNAPSHOT-perf.jar 1007
+```