[
https://issues.apache.org/jira/browse/HBASE-8420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13666796#comment-13666796
]
Jimmy Xiang commented on HBASE-8420:
------------------------------------
6.5% is for YCSB scan with default max number of rows 1000, the number of rows
are uniformly distributed between 1 and 1000, while the default Scan caching is
100. I think it should be very helpful for those MR jobs which need to do
something with the scanned results.
> Port HBASE-6874 Implement prefetching for scanners from 0.89-fb
> -----------------------------------------------------------------
>
> Key: HBASE-8420
> URL: https://issues.apache.org/jira/browse/HBASE-8420
> Project: HBase
> Issue Type: Improvement
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Attachments: 0.94-8420_v1.patch, 0.94-8420_v2.patch,
> 0.94-8420_v6.1.patch, trunk-8420_v1.patch, trunk-8420_v2.patch,
> trunk-8420_v3.patch, trunk-8420_v4.patch, trunk-8420_v5.1.patch,
> trunk-8420_v5.patch, trunk-8420_v6.1.patch, trunk-8420_v6.patch
>
>
> This should help scanner performance. We should have it in trunk.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
