[CASSANDRA-11301] Non-obsoleting compaction operations over compressed files can impose rate limit on normal reads

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.2.6
• Component/s: Legacy/Core
• Severity: Normal
• Assignee: Stefania Alborghetti
• Reporter: Benedict Elliott Smith

Authors

Stefania Alborghetti

Reviewers

Marcus Eriksson

• Created: 03/Mar/16 17:08
• Updated: 16/Apr/19 09:30
• Resolved: 10/Mar/16 10:23

Description

Broken by CASSANDRA-9240; the rate limiting reader passes the ICompressedFile interface to its parent, which uses this to attach an "owner" - which means the reader gets recycled on close, i.e. pooled, for normal use. If the compaction were to replace the sstable there would be no problem, which is presumably why this hasn't been encountered frequently. However validation compactions on long lived sstables would permit these rate limited readers to accumulate.

Issue Links

• is broken by: CASSANDRA-9240 Performance issue after a restart