HIVE-24082: Expose information whether AcidUtils.ParsedDelta contains statementId (Piotr Findeisen reviewed by Zoltan Haindrich and Peter Vary)

Closes #1438 
diff --git a/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java b/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java
index 991f151..0cb4af9 100644
--- a/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java
+++ b/ql/src/java/org/apache/hadoop/hive/ql/io/AcidUtils.java
@@ -1031,8 +1031,12 @@
       return path;
     }
 
+    public boolean hasStatementId() {
+      return statementId >= 0;
+    }
+
     public int getStatementId() {
-      return statementId == -1 ? 0 : statementId;
+      return hasStatementId() ? statementId : 0;
     }
 
     public boolean isDeleteDelta() {