We slightly misunderstood the Hadoop LZ4 format. A compressed buffer can actually contain several "frames", each prefixed with (de)compressed size.
See #25281
Reporter: Antoine Pitrou / @pitrou
Assignee: Antoine Pitrou / @pitrou
Related issues:
PRs and other links:
Note: This issue was originally created as ARROW-11301. Please see the migration documentation for further details.