public java.lang.String getExecutionMode() {
        java.lang.Object ref = executionMode_;
        if (!(ref instanceof java.lang.String)) {
          com.google.protobuf.ByteString bs =
              (com.google.protobuf.ByteString) ref;
          java.lang.String s = bs.toStringUtf8();
          if (bs.isValidUtf8()) {
            executionMode_ = s;
          }
          return s;
        } else {
          return (java.lang.String) ref;
        }
      }
<code>optional string executionMode = 4;</code>
@return The executionMode.
ql/src/gen/protobuf/gen-java/org/apache/hadoop/hive/ql/hooks/proto/HiveHookEvents.java