[CASSANDRA-3442] TTL histogram for sstable metadata - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Low
Resolution: Fixed
Fix Version/s: 1.2.0 beta 1
Component/s: None
Labels:
- compaction

Description

Under size-tiered compaction, you can generate large sstables that compact infrequently. With expiring columns mixed in, we could waste a lot of space in this situation.

If we kept a TTL EstimatedHistogram in the sstable metadata, we could do a single-sstable compaction aginst sstables with over 20% expired data.

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3442-track-tombstones.txt
06/Mar/12 19:08
51 kB
Yuki Morishita
3442-v3.txt
28/Feb/12 15:55
42 kB
Jonathan Ellis
cassandra-1.1-3442.txt
09/Feb/12 19:48
35 kB
Yuki Morishita

Activity

People

Assignee:: Yuki Morishita

Reporter:: Jonathan Ellis

Authors:: Yuki Morishita

Reviewers:: Jonathan Ellis

Votes:: 1 Vote for this issue

Watchers:: 8 Start watching this issue

Dates

Created:: 02/Nov/11 03:36

Updated:: 16/Apr/19 09:32

Resolved:: 07/Mar/12 21:35