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Posted to issues@hbase.apache.org by "Liang Xie (JIRA)" <ji...@apache.org> on 2013/10/29 08:11:32 UTC
[jira] [Updated] (HBASE-9855) evictBlocksByHfileName improvement
for bucket cache
[ https://issues.apache.org/jira/browse/HBASE-9855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Liang Xie updated HBASE-9855:
-----------------------------
Attachment: HBase-9855.txt
> evictBlocksByHfileName improvement for bucket cache
> ---------------------------------------------------
>
> Key: HBASE-9855
> URL: https://issues.apache.org/jira/browse/HBASE-9855
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.98.0
> Reporter: Liang Xie
> Assignee: Liang Xie
> Attachments: HBase-9855.txt
>
>
> In deed, it comes from fb's l2 cache by [~avf]'s nice work, i just did a simple backport here. It could improve a linear-time search through the whole cache map into a log-access-time map search.
> I did a small bench, showed it brings a bit gc overhead, but considering the evict on close triggered by frequent compaction activity, seems reasonable?
> and i thought bring a "evictOnClose" config into BucketCache ctor and only put/remove the new index map while evictOnClose is true, seems this value could be set by each family schema, but BucketCache is a global instance not per each family, so just ignore it rightnow...
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