Hi! [scala] I'm trying to figure out a possible ca...
# generalf
fierce-truck-19259
06/16/2024, 4:41 PMHi! [scala] I'm trying to figure out a possible cache race issue with BSP and multiple bsp-groups using the same resolver with overlapping dependencies, where they end up blowing up in native-land materialize due to read-only files seemingly being copied to in parallel. I can put up a repro if it sounds interesting, or maybe there's prior knowledge around it?
fierce-truck-19259
06/16/2024, 4:43 PMSo files are copied from the immutable store, but seemingly in parallel, causing it to blow up on trying to write to an existing read-only file in the bsp working directory
fierce-truck-19259
06/16/2024, 4:47 PMI.e. a bsp run ends up with something like:
Copy code
native_engine.IntrinsicError: Error copying bytes from /Users/johngranstrom/.cache/pants/lmdb_store/immutable/files/3a/3aee4e8da9e6f2ddc84d67dce50150f427acf9c62e0aeb7792693985dd974329 to /Users/johngranstrom/code/repros/bsprepro2/.pants.d/bsp/jvm/resolves/jvm/lib/dev.zio_izumi-reflect_2.13_2.3.8.jar: Permission denied (os error 13) (-32602)fierce-truck-19259
06/16/2024, 4:54 PMMy workaround was making everything one huge bsp group, and then it doesn't occur, so it seems like there's some concurrency-effect in play
fierce-truck-19259
10/21/2024, 4:53 PMI created a repro-repo for this if anyone has any ideas https://github.com/pantsbuild/pants/issues/21532
3 Views