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  1. HBase
  2. HBASE-15161 Umbrella: Miscellaneous improvements from production usage
  3. HBASE-15162

Add separate metrics for meta/data block hit ratio in cache

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      Currently we already have a metrics in name of blockCacheExpressHitPercent to indicate the cache hit ratio. However, since meta block is small and often cached in memory with a high hit ratio, this "mixed" metrics could not show the real data block hit ratio which is more concerned.

      We propose to add two new metrics to show meta and data block cache hit ratio separately, while reserving the old metrics for backward compatibility.

        Attachments

        1. HBASE-15162.patch
          18 kB
          Yu Li
        2. HBASE-15162_v2.patch
          19 kB
          Yu Li

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              • Assignee:
                liyu Yu Li
                Reporter:
                liyu Yu Li
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                  Updated:
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