[
https://issues.apache.org/jira/browse/PHOENIX-3941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354161#comment-16354161
]
James Taylor commented on PHOENIX-3941:
---------------------------------------
Thanks, [~maryannxue]. I've filed PHOENIX-4585 for this follow up work. It's
fine for PHOENIX-1556 to go in first.
> Filter regions to scan for local indexes based on data table leading pk
> filter conditions
> -----------------------------------------------------------------------------------------
>
> Key: PHOENIX-3941
> URL: https://issues.apache.org/jira/browse/PHOENIX-3941
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
> Assignee: James Taylor
> Priority: Major
> Labels: SFDC, localIndex
> Fix For: 4.14.0
>
> Attachments: PHOENIX-3941_v1.patch, PHOENIX-3941_v2.patch
>
>
> Had a good offline conversation with [~ndimiduk] at PhoenixCon about local
> indexes. Depending on the query, we can often times prune the regions we need
> to scan over based on the where conditions against the data table pk. For
> example, with a multi-tenant table, we only need to scan the regions that are
> prefixed by the tenant ID.
> We can easily get this information from the compilation of the query against
> the data table (which we always do), through the
> statementContext.getScanRanges() structure. We'd just want to keep a pointer
> to the data table QueryPlan from the local index QueryPlan.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
