@java.lang.Override
    public com.google.protobuf.ByteString getFileKey() {
      return fileKey_;
    }
<code>optional bytes file_key = 1;</code>
@return The fileKey.
llap-common/src/gen/protobuf/gen-java/org/apache/hadoop/hive/llap/daemon/rpc/LlapDaemonProtocolProtos.java