+1 (non-binding) I verified the SHA-512 checksum and signature, source correspondence with v0.4.0-rc0, archive safety, LICENSE, NOTICE and applicable license headers.
The source archive built and installed successfully on Linux with GCC 14.3.0. All 19 CTest test programs passed, with 4,152 individual tests passing. One non-blocking suggestion for the next release: update the MurmurHash3 paths in LICENSE to src/iceberg/util/murmurhash3_internal.*. Thanks, Xuanwo
