[CASSANDRA-12228] Write performance regression in 3.x vs 3.0

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 3.10
• Severity: Low
• Assignee: Ariel Weisberg
• Reporter: T Jake Luciani

Authors

Ariel Weisberg

Reviewers

Marcus Eriksson

• Created: 18/Jul/16 20:32
• Updated: 16/Apr/19 09:30
• Resolved: 04/Aug/16 12:33

Description

I've been tracking down a performance issue in trunk vs cassandra-3.0 branch.

I think I've found it. CASSANDRA-6696 changed the default memtable flush default to 1 vs the min of 2 in cassandra-3.0.

I don't see any technical reason for this and we should add back the min of 2 sstable flushers per disk.

Issue Links

• is related to: CASSANDRA-12372 Remove deprecated memtable_cleanup_threshold for 4.0