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https://issues.apache.org/jira/browse/IMPALA-11745?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Rozsa reassigned IMPALA-11745:
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Assignee: Peter Rozsa
> Add Hive's ESRI geospatial functions as builtins
> ------------------------------------------------
>
> Key: IMPALA-11745
> URL: https://issues.apache.org/jira/browse/IMPALA-11745
> Project: IMPALA
> Issue Type: New Feature
> Components: Frontend
> Reporter: Csaba Ringhofer
> Assignee: Peter Rozsa
> Priority: Major
> Labels: geospatial
>
> Hive has added the Esri Hive UDFs as builtin functions in HIVE-26223.
> The original Hive Esri source:
> https://github.com/Esri/spatial-framework-for-hadoop
> A simple (but inefficient) way to add postgis style geospatial support in
> Impala is to import these functions through Hive and add them as builtins.
> This is possible as Impala supports Hive UDFs, but is much slower than a
> native implementation could be.
> My plan is to add these functions depending on a flag, e.g. uf
> geospatial_library=hive_esri. This would allow native implementations to be
> added later and let users choose between Hive compatibility and speed. It
> could also make sense override only the more critical functions with native
> ones, but it may turn out that the binary format used in ESRI is suboptimal
> for a native implementation.
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