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

Posted to dev@hbase.apache.org by "chenxu (Jira)" <ji...@apache.org> on 2019/11/15 03:30:00 UTC

[jira] [Created] (HBASE-23296) Support Bucket based L1 Cache

chenxu created HBASE-23296:
------------------------------

             Summary: Support Bucket based L1 Cache
                 Key: HBASE-23296
                 URL: https://issues.apache.org/jira/browse/HBASE-23296
             Project: HBase
          Issue Type: Improvement
          Components: BlockCache
            Reporter: chenxu


LruBlockCache is not suitable in the following scenarios:
(1) cache size too large (will take too much heap memory, and evictBlocksByHfileName is not so efficient, as HBASE-23277 mentioned)
(2) block evicted frequently, especially cacheOnWrite & prefetchOnOpen are enabled.
Since block‘s data is reclaimed by GC, this may affect GC performance.
So how about enabling a Bucket based L1 Cache.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)