public Builder setAppIdBytes(
          com.google.protobuf.ByteString value) {
        if (value == null) { throw new NullPointerException(); }
        appId_ = value;
        bitField0_ |= 0x00000001;
        onChanged();
        return this;
      }
<code>optional string app_id = 1;</code>
@param value The bytes for appId to set.
@return This builder for chaining.
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java