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From "Zach York (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18533) Expose BucketCache values to be configured
Date Wed, 09 Aug 2017 22:51:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18533?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zach York updated HBASE-18533:
------------------------------
    Release Note: 
This patch exposes configuration for Bucketcache. These configs are very similar to those
for the LRU cache, but are described below:

"hbase.bucketcache.single.factor"; /** Single access bucket size */
"hbase.bucketcache.multi.factor"; /** Multiple access bucket size */
"hbase.bucketcache.memory.factor"; /** In-memory bucket size */
"hbase.bucketcache.extrafreefactor"; /** Free this floating point factor of extra blocks when
evicting. For example free the number of blocks requested * (1 + extraFreeFactor) */
"hbase.bucketcache.acceptfactor"; /** Acceptable size of cache (no evictions if size <
acceptable) */
"hbase.bucketcache.minfactor"; /** Minimum threshold of cache (when evicting, evict until
size < min) */



  was:
This patch exposes configuration for Bucketcache. These configs are very similar to those
for the LRU cache, but are described below:

"hbase.bucketcache.single.percentage"; /** Single access bucket size */
"hbase.bucketcache.multi.percentage"; /** Multiple access bucket size */
"hbase.bucketcache.memory.percentage"; /** In-memory bucket size */
"hbase.bucketcache.extrafreefactor"; /** Free this floating point factor of extra blocks when
evicting. For example free the number of blocks requested * (1 + extraFreeFactor) */
"hbase.bucketcache.acceptfactor"; /** Acceptable size of cache (no evictions if size <
acceptable) */
"hbase.bucketcache.minfactor"; /** Minimum threshold of cache (when evicting, evict until
size < min) */




> Expose BucketCache values to be configured
> ------------------------------------------
>
>                 Key: HBASE-18533
>                 URL: https://issues.apache.org/jira/browse/HBASE-18533
>             Project: HBase
>          Issue Type: Improvement
>          Components: BucketCache
>            Reporter: Zach York
>            Assignee: Zach York
>         Attachments: HBASE-18533.branch-1.001.patch, HBASE-18533.branch-1.002.patch,
HBASE-18533.master.001.patch, HBASE-18533.master.002.patch
>
>
> BucketCache always uses the default values for all cache configuration. However, this
doesn't work for all use cases. In particular, users want to be able to configure the percentage
of the cache that is single access, multi access, and in-memory access.



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