[JNI][Gandiva] LLVM generated code can't access some system functions on certain platforms

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#657 opened on Mar 7, 2025 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: java
Domain: backend

Research direction

Start with the JNI/Gandiva library-loading path and the Java default RTLD_LOCAL behavior described in the issue; compare it with the JNA approach and the related Apache Arrow issue. Reproduce the sinh failure involving sinhl on an affected Linux platform, then verify that LLVM-generated code can resolve Gandiva's imported system symbols.

Written by the indexing model from the issue text.

Description

Type: bug

Describe the bug, including details regarding any error messages, version, and platform.

When linux loads libraries there are different options for symbols visibility like: RTLD_LOCAL, RTLD_GLOBAL. Default in Java is RTLD_LOCAL which makes all symbols inside Gandiva library only visible to the Gandiva library.

The problem is when LLVM compiles code and loads it into Java process that code won't be able to find any symbols imported by Gandiva. One example is 'sinhl' from libgcc which causes sinh function to fail when it is present in SQL query executed by Dremio using Gandiva engine. By importing JNA package we can control how to load Gandiva library and set Global symbol visibility.

Dominant language: Java
Stars: 95
Forks: 154
Avg merge: 2d 10h
Merged PRs (30d): 11

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