[CASSANDRA-5906] Avoid allocating over-large bloom filters

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 2.1 beta1
• Assignee: Yuki Morishita
• Reporter: Jonathan Ellis

Authors

Yuki Morishita

Reviewers

Jonathan Ellis

• Created: 20/Aug/13 15:44
• Updated: 16/Apr/19 09:32
• Resolved: 20/Dec/13 20:36

Description

We conservatively estimate the number of partitions post-compaction to be the total number of partitions pre-compaction. That is, we assume the worst-case scenario of no partition overlap at all.

This can result in substantial memory wasted in sstables resulting from highly overlapping compactions.

Issue Links

• is blocked by: CASSANDRA-6356 Proposal: Statistics.db (SSTableMetadata) format change