The writer gives a chunk of more than u32::MAX bytes layout message
version 5 and, filtered, index elements whose stored size takes the file's
size of lengths, as libhdf5 2.x does (the Fixed and Extensible Array
structures match libhdf5's byte for byte). Chunk dimensions of 2^32 or more
and filters that cannot take such a chunk (LZF, bitshuffle, bzip2, Blosc,
pcodec) are refused instead of truncated. Chunks are extracted row by row
and one at a time; deflate no longer cuts input at 4 GiB - 1 bytes, nor
holds the worst-case bound of a large chunk; an LZ4 chunk of 4 GiB or more
is read as the registered framing.
FileEditor refuses writing values into, or pruning/allocating, chunks of
4 GiB or more before anything is written; growing the extent and
attributes still work.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
