You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@hbase.apache.org by "Vladimir Rodionov (JIRA)" <ji...@apache.org> on 2015/10/08 02:16:27 UTC

[jira] [Updated] (HBASE-14496) Compaction improvements: Delayed compaction

     [ https://issues.apache.org/jira/browse/HBASE-14496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vladimir Rodionov updated HBASE-14496:
--------------------------------------
    Attachment: HBASE-14496.v1.patch

Patch v1.

> Compaction improvements: Delayed compaction
> -------------------------------------------
>
>                 Key: HBASE-14496
>                 URL: https://issues.apache.org/jira/browse/HBASE-14496
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>         Attachments: HBASE-14496.v1.patch
>
>
> Delayed compaction feature allows to specify maximum compaction delay for newly created store files. Files will be eligible for compaction only if their age exceeds this delay. This will allow to preserve new data in a block cache. For most applications, the newer the data is the more frequently it is accessed. The frequent compactions of a new store files result in high block cache churn rate and affects read performance and read latencies badly. 
> The configuration will be global, per table, per column family.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)