change name

Signed-off-by: xinyual <xinyual@amazon.com>

Author: xinyual

core/src/main/java/org/opensearch/sql/utils/QueryStringUtils.java

@@ -14,9 +14,9 @@ public class QueryStringUtils {
 
   public static final String MASK_COLUMN = "identifier";
 
-  public static final String MASK_TIMESTAMP_COLUMN = "timestamp_identifier";
+  public static final String MASK_TIMESTAMP_COLUMN = "time_identifier";
 
-  public static final String MASK_METADATA_COLUMN = "metadata_identifier";
+  public static final String MASK_METADATA_COLUMN = "meta_identifier";
 
   public static String maskField(String fieldName) {
     if (fieldName.equals(INTERNAL_TIMESTAMP)) {

ppl/src/test/java/org/opensearch/sql/ppl/utils/PPLQueryDataAnonymizerTest.java

@@ -255,7 +255,7 @@ public void testReverseCommand() {
   @Test
   public void testTimechartCommand() {
     assertEquals(
-        "source=table | timechart limit=*** useother=*** count() by span(timestamp_identifier, ***"
+        "source=table | timechart limit=*** useother=*** count() by span(time_identifier, ***"
             + " m) identifier",
         anonymize("source=t | timechart count() by host"));
   }
@@ -391,7 +391,7 @@ public void testAndExpression() {
   @Test
   public void testAndExpressionWithMetaData() {
     assertEquals(
-        "source=table | where metadata_identifier = *** and identifier = ***",
+        "source=table | where meta_identifier = *** and identifier = ***",
         anonymize("source=t | where _id=1 and b=2"));
   }
 
@@ -886,7 +886,7 @@ private String anonymizeStatement(String query, boolean isExplain) {
   @Test
   public void testSearchWithAbsoluteTimeRange() {
     assertEquals(
-        "source=table (timestamp_identifier >= ***) AND (timestamp_identifier <= ***)",
+        "source=table (time_identifier >= ***) AND (time_identifier <= ***)",
         anonymize("search source=t earliest='2012-12-10 15:00:00' latest=now"));
   }
 
@@ -913,7 +913,7 @@ public void testSearchWithGroup() {
   @Test
   public void testSearchWithOr() {
     assertEquals(
-        "source=table (timestamp_identifier >= *** OR timestamp_identifier <= ***)",
+        "source=table (time_identifier >= *** OR time_identifier <= ***)",
         anonymize("search source=t earliest='2012-12-10 15:00:00' or latest=now"));
   }