public String getFullPartitionName() {
    if (fullPartitionName == null) {
      StringBuilder buf = new StringBuilder();
      buf.append(dbname);
      buf.append('.');
      buf.append(tableName);
      if (partName != null) {
        buf.append('.');
        buf.append(partName);
      }
      fullPartitionName = buf.toString();
    }
    return fullPartitionName;
  }
The highest write id that the compaction job will pay attention to.
{@code 0} means it wasn't set (e.g. in case of upgrades, since ResultSet.getLong() will return 0 if field is NULL)
See also {@link TxnUtils#createValidCompactWriteIdList(TableValidWriteIds)} and
{@link ValidCompactorWriteIdList#highWatermark}.
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/entities/CompactionInfo.java