[CASSANDRA-6755] Optimise CellName/Composite comparisons for NativeCell

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.1.1
• Component/s: Legacy/Local Write-Read Paths
• Labels: performance
• Assignee: T Jake Luciani
• Reporter: Benedict Elliott Smith

Authors

T Jake Luciani

Reviewers

Benedict Elliott Smith

• Created: 22/Feb/14 11:32
• Updated: 16/Apr/19 09:31
• Resolved: 30/Jun/14 13:32

Description

As discussed in CASSANDRA-6694, to reduce temporary garbage generation we should minimise the incidence of CellName component extraction. The biggest win will be to perform comparisons on Cell where possible, instead of CellName, so that Native*Cell can use its extra information to avoid creating any ByteBuffer objects

Issue Links

• is related to: CASSANDRA-6934 Optimise Byte + CellName comparisons
• is related to: CASSANDRA-7736 Clean-up, justify (and reduce) each use of @Inline
• supercedes: CASSANDRA-6697 Refactor Cell and CellName ByteBuffer accessors to avoid garbage allocation where possible