Fix bwc issue in remote prediction (#2085) (#2097)

* Fix bwc issue in remote prediction

Signed-off-by: Sicheng Song <[email protected]>

* Fix typo

Signed-off-by: Sicheng Song <[email protected]>

* Re-order the function name type to the right order

Signed-off-by: Sicheng Song <[email protected]>

---------

Signed-off-by: Sicheng Song <[email protected]>
(cherry picked from commit b3dfabc)

Co-authored-by: Sicheng Song <[email protected]>

Author: opensearch-trigger-bot[bot]

common/src/main/java/org/opensearch/ml/common/FunctionName.java

@@ -8,6 +8,9 @@
 import java.util.HashSet;
 import java.util.Set;
 
+// Please strictly add new FunctionName to the last line
+// and avoid altering the order of the existing FunctionName,
+// or it will break the backward compatibility!
 public enum FunctionName {
     LINEAR_REGRESSION,
     KMEANS,
@@ -20,11 +23,11 @@ public enum FunctionName {
     RCF_SUMMARIZE,
     LOGISTIC_REGRESSION,
     TEXT_EMBEDDING,
-    TEXT_SIMILARITY,
-    SPARSE_ENCODING,
-    SPARSE_TOKENIZE,
     METRICS_CORRELATION,
     REMOTE,
+    SPARSE_ENCODING,
+    SPARSE_TOKENIZE,
+    TEXT_SIMILARITY,
     AGENT;
 
     public static FunctionName from(String value) {

common/src/main/java/org/opensearch/ml/common/dataset/MLInputDataType.java

@@ -5,10 +5,13 @@
 
 package org.opensearch.ml.common.dataset;
 
+// Please strictly add new MLInputDataType to the last line
+// and avoid altering the order of the existing MLInputDataType,
+// or it will break the backward compatibility!
 public enum MLInputDataType {
     SEARCH_QUERY,
     DATA_FRAME,
     TEXT_DOCS,
-    TEXT_SIMILARITY,
-    REMOTE
+    REMOTE,
+    TEXT_SIMILARITY
 }