public static Builder newBuilder(org.apache.hadoop.hive.llap.daemon.rpc.LlapDaemonProtocolProtos.FragmentRuntimeInfo prototype) {
      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
    }
<code>optional int64 current_attempt_start_time = 6;</code>
@return The currentAttemptStartTime.
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java