@Override
  void setObjectStore(MetaToolObjectStore objectStore) {
    super.setObjectStore(objectStore);
    this.taskTimeout = MetastoreConf.getTimeVar(objectStore.getConf(), MetastoreConf.ConfVars.METADATA_SUMMARY_TIMEOUT,
        TimeUnit.MILLISECONDS);
  }
Helper method of exportInJson.

@param jsonOutput A string, JSON formatted string about metadataSummary.
@param filename   Path of a file in String where the summary needs to be output to.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/tools/metatool/MetaToolTaskMetadataSummary.java