MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
The lz4_decompress utility decompresses mysqlpump output that was created using LZ4 compression.
If MySQL was configured with the
lz4_decompress is not built. In this case,
the system lz4 command can be used instead.
Invoke lz4_decompress like this:
lz4_decompress input_file output_file
mysqlpump --compress-output=LZ4 > dump.lz4 lz4_decompress dump.lz4 dump.txt
To see a help message, invoke lz4_decompress with no arguments.
To decompress mysqlpump ZLIB-compressed output, use zlib_decompress. See Section 4.8.3, “zlib_decompress — Decompress mysqlpump ZLIB-Compressed Output”.