[jira] [Comment Edited] (HIVE-11294) Use HBase to cache aggregated stats

["Lefty Leverenz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-11294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14638169#comment-14638169 ] 

Lefty Leverenz edited comment on HIVE-11294 at 7/23/15 5:14 AM:
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Doc note:  This creates four configuration parameters, so they will need to be documented in the wiki after hbase-metastore-branch gets merged to trunk.  In the meantime, I'm linking this issue to HIVE-9752 (Documentation for HBase metastore).

The new parameters are:

*  hive.metastore.hbase.aggr.stats.cache.entries
*  hive.metastore.hbase.aggr.stats.memory.ttl
*  hive.metastore.hbase.aggr.stats.invalidator.frequency
*  hive.metastore.hbase.aggr.stats.hbase.ttl


was (Author: lefty@hortonworks.com):
Doc note:  This creates four configuration parameters, so they will need to be documented in the wiki after hbase-metastore-branch gets merged to trunk.  In the meantime, I'm linking this issue to HIVE-9752 (Documentation for HBase metastore).

> Use HBase to cache aggregated stats
> -----------------------------------
>
>                 Key: HIVE-11294
>                 URL: https://issues.apache.org/jira/browse/HIVE-11294
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore
>    Affects Versions: hbase-metastore-branch
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>             Fix For: hbase-metastore-branch
>
>         Attachments: HIVE-11294.2.patch, HIVE-11294.patch
>
>
> Currently stats are cached only in the memory of the client.  Given that HBase can easily manage the scale of caching aggregated stats we should be using it to do so.



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