This contains the code associated with the paper:

Majid Saeedan and Ahmed Eldawy. 2022. Spatial Parquet: A Column File Format for Geospatial Data Lakes. In The 30th International Conference on Advances in Geographic Information Systems (SIGSPATIAL ’22), November 1–4, 2022, Seattle, WA, USA. ACM, New York, NY, USA, 4 pages. Link

To build, run the following on the root directory:

mvn clean install

edu.ucr.cs.bdlab.spatialParquet This package contains the reader/writer implementation of Spatial Parquet. Check the Main class for how they are used.

edu.ucr.cs.bdlab.geoParquet This package contains a reader/writer implementation of the GeoParquet structure.

To use it with FP-Delta encoding, must used a modified version of Parquet. This is done as follows:

• Change the dependency version of org.apache.parquet from 1.12.2 to 1.13.0-SNAPSHOTpom.xml
• Go to the folder parquet-mr and follow the build instructions.
• Build Spatial Parquet again and use it similar to the Main file.

This is currently required because Parquet doesn't provide the option to set a custom encoding. The current implementation of the encoding is experimental and can see some performance improvement in terms of read/write time and providing more options for encoding to provide more flexibility.