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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2014/07/15 22:44:05 UTC

[jira] [Created] (HBASE-11520) Simplify offheap cache config by removing the confusing "hbase.bucketcache.percentage.in.combinedcache"

stack created HBASE-11520:
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             Summary: Simplify offheap cache config by removing the confusing "hbase.bucketcache.percentage.in.combinedcache"
                 Key: HBASE-11520
                 URL: https://issues.apache.org/jira/browse/HBASE-11520
             Project: HBase
          Issue Type: Sub-task
    Affects Versions: 0.99.0
            Reporter: stack
            Assignee: stack
             Fix For: 0.99.0


Remove "hbase.bucketcache.percentage.in.combinedcache".  It is unnecessary complication of block cache config.  Let L1 config setup be as it is whether a L2 present or not, just set hfile.block.cache.size (not hbase.bucketcache.size * (1.0 - hbase.bucketcache.percentage.in.combinedcache)).  For L2, let hbase.bucketcache.size be the actual size of the bucket cache, not hbase.bucketcache.size * hbase.bucketcache.percentage.in.combinedcache.

Attached patch removes the config. and updates docs.  Adds tests to confirm configs are as expected whether a CombinedBlockCache deploy or a strict L1+L2 deploy.





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