niyue commented on code in PR #37787:
URL: https://github.com/apache/arrow/pull/37787#discussion_r1330212433
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cpp/src/gandiva/function_registry.cc:
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@@ -45,6 +47,21 @@ std::vector<NativeFunction> FunctionRegistry::pc_registry_;
SignatureMap FunctionRegistry::pc_registry_map_ = InitPCMap();
+std::vector<NativeFunction> LoadExternalFunctionRegistry() {
+ std::string ext_dir;
+ const char* ext_dir_env = std::getenv("GANDIVA_EXTENSION_DIR");
Review Comment:
Users can specify an environment variable called `GANDIVA_EXTENSION_DIR` to
ask the library to load the external registry file and corresponding bitcode
files from this directory. This directory could contain multiple json registry
files and bitcode files, and all of them will be loaded automatically once this
env var is set.
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