default DataSource create(Configuration hdpConfig) throws SQLException {
    int maxPoolSize = MetastoreConf.getIntVar(hdpConfig, MetastoreConf.ConfVars.CONNECTION_POOLING_MAX_CONNECTIONS);
    return create(hdpConfig, maxPoolSize);
  }
@param hdpConfig
@return the new connection pool
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/datasource/DataSourceProvider.java