private TaskTracker forNewTable() throws Exception {
    // Place all partitions in single task to reduce load on HMS.
    addConsolidatedPartitionDesc(null);
    return tracker;
  }
Get all partitions in a batch and consolidate them into single partition request.
Also, copy relevant stats and other information from original request.

@throws SemanticException
@param lastAlterTableAddPartitionDesc
ql/src/java/org/apache/hadoop/hive/ql/exec/repl/bootstrap/load/table/LoadPartitions.java