private PoolData getPoolData(Map<String, PoolData> poolInfo, String poolPath) {
    PoolData poolData = poolInfo.get(poolPath);
    if (poolData == null) {
      poolData = new PoolData();
      poolInfo.put(poolPath, poolData);
    }
    return poolData;
  }
This is a cleanup method which is used to rollback a active transaction
if the success flag is false and close the associated Query object. This method is used
internally and visible for testing purposes only
@param success Rollback the current active transaction if false
@param query Query object which needs to be closed
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java