chenxu created HBASE-23296:
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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.
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