read DSF directory
Instructions for Use
The tool for reading DSF directories extracts DSF data stored in HDFS directories or local directories into DSF feature datasets (DSFFeatureRDD) for subsequent analysis.
- DSF: The distributed spatial file engine (Distributed Spatial File, hereinafter referred to as DSF), can manage vector, raster and image data, and has high-performance distributed access, spatial query, statistics, distributed analysis, spatial visualization and Data management capabilities.
DSF is more suitable for high-performance distributed computing of full spatial data, and can further strengthen the distributed storage and management capabilities of massive classical spatial data.
- DSFFeatureRDD: DSFFeatureRDD is a feature dataset type designed for feature dataset FeatureRDD for reading DSF data.
Parameter Description
| parameter name | default value | parameter definition | parameter type |
|---|---|---|---|
| Path | DSF data source directory, supports local directory and HDFS directory. Example 1: Local directory: file:///E:/data/vectordata/Zoo_pt Example 1: HDFS directory: hdfs://172.16.16.8:9000/data/vector /DLTB_3857. |
String | |
| RDD is the reference RDD of priority execution address (Optional) |
RDD is the reference RDD of priority execution location, if perLocationsRDD is set, the priority execution address in the resulting geographic partition feature dataset is the same as the address of the set feature dataset. | DSFFeatureRDD |
output result
The output of the Read Vector Data tool is a DSF feature dataset (DSFFeatureRDD).