[IMPALA-4926] Upgrade LZ4 to recent version

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 2.9.0
• Fix Version/s: Impala 2.9.0
• Component/s: Infrastructure
• Target Version: Impala 2.9.0
• Assignee: Henry Robinson
• Reporter: Henry Robinson
• Created: 14/Feb/17 01:33
• Updated: 23/Feb/17 19:29
• Resolved: 23/Feb/17 19:29

Description

Our LZ4 version is old, and of uncertain origin - it's checked directly into the native toolchain repository.

LZ4 has releases at https://github.com/lz4/lz4/releases, and seems to include some performance improvements, so let's upgrade to 1.7.5.