[CASSANDRA-8895] Compressed sstables should only compress if the win is above a certain threshold, and should use a variable block size

• Type: Improvement
• Status: Open
• Priority: Normal
• Resolution: Unresolved
• Fix Version/s: 5.x
• Component/s: Feature/Compression
• Labels: performance
• Assignee: Unassigned
• Reporter: Benedict Elliott Smith
• Created: 03/Mar/15 15:04
• Updated: 07/Mar/23 10:54

Description

On performing a flush to disk, we should assess if the data we're flushing will actually be substantively compressed, and how large the page should be to get optimal compression ratio versus read latency. Decompressing 64Kb chunks is wasteful when reading small records.

Issue Links

• is related to: CASSANDRA-10520 Compressed writer and reader should support non-compressed data.