[CASSANDRA-4565] TTL columns with older then gcgrace do not need to flush - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Normal
Resolution: Not A Problem
Fix Version/s: 2.0 beta 1
Component/s: None
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Description

With memcache many people are willing to sacrifice durability for performance. Cassandra has a TimeToLive feature that can be used in caching scenarios with low values for gc_grace_seconds. However from a code dive it seems that cassandra will always write TTL to disk, even those that are beyond gc_grace_seconds. If a use case very large memtables,small ttl, and small gc_grace it is possible that flushing these columns to disk can be skipped entirely in some scenarios.

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cassandra-4565.patch.1.txt
21/Aug/12 23:48
3 kB
Edward Capriolo

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Assignee:: Aleksey Yeschenko

Reporter:: Edward Capriolo

Authors:: Aleksey Yeschenko

Reviewers:: Jonathan Ellis

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Dates

Created:: 21/Aug/12 23:46

Updated:: 16/Apr/19 09:32

Resolved:: 12/Sep/12 08:55