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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7550) Reduce tombstones
Date Tue, 15 Jul 2014 11:55:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14061979#comment-14061979
] 

Aleksey Yeschenko commented on CASSANDRA-7550:
----------------------------------------------

You can't (generally) know for a fact that a partition with the same key/a cell with the same
name doesn't exist elsewhere on disk or on another node.

> Reduce tombstones
> -----------------
>
>                 Key: CASSANDRA-7550
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7550
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Hanson
>
> If a record is still in Memtable, the Delete to that record shall be done in memory (Make
Compaction in memory), instead of placing a tombstone. This way it can save disk I/O and space
a lot for records with short lifecycle.



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