protected Partition resolvePartition(CompactionInfo ci) throws MetaException {
    return CompactorUtil.resolvePartition(conf, null, ci.dbname, ci.tableName, ci.partName, 
        CompactorUtil.METADATA_FETCH_MODE.LOCAL);
  }
Compactor threads that runs in the metastore. It uses a {@link TxnStore}
to access the internal database.
ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/MetaStoreCompactorThread.java