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Posted to dev@hbase.apache.org by "Liang Xie (JIRA)" <ji...@apache.org> on 2013/10/29 08:11:31 UTC
[jira] [Created] (HBASE-9855) evictBlocksByHfileName improvement
for bucket cache
Liang Xie created HBASE-9855:
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Summary: 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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