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  1. HBase
  2. HBASE-23296

Add CompositeBucketCache to support tiered BC

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    Details

    • Type: New Feature
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: BlockCache
    • Labels:
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      Description

      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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              • Assignee:
                javaman_chen chenxu
                Reporter:
                javaman_chen chenxu
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                Dates

                • Created:
                  Updated: