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From "Haoyuan Li (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1011) Keep data in Memcache until specified TTL or memory pressure
Date Tue, 25 May 2010 00:56:24 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12870927#action_12870927

Haoyuan Li commented on HBASE-1011:

Will this feature be supported in future?

> Keep data in Memcache until specified TTL or memory pressure
> ------------------------------------------------------------
>                 Key: HBASE-1011
>                 URL: https://issues.apache.org/jira/browse/HBASE-1011
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Jonathan Gray
> In thinking about ways to improve random-read access, a very typical access pattern for
web sites is to primarily be retrieving from new records but having a much larger total dataset
in a given table.
> If you could specify a Memcache flush TTL, you could keep "past 24 hours" in memory and
this would give you a sliding window updated on memcache flushes.  Must also adapt to regionserver
memory pressure.

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