[
https://issues.apache.org/jira/browse/BAHIR-102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15963277#comment-15963277
]
ASF GitHub Bot commented on BAHIR-102:
--------------------------------------
Github user lresende commented on a diff in the pull request:
https://github.com/apache/bahir/pull/41#discussion_r110724252
--- Diff: sql-cloudant/README.md ---
@@ -62,6 +62,8 @@ cloudant.protocol|https|protocol to use to transfer data:
http or https
cloudant.host||cloudant host url
cloudant.username||cloudant userid
cloudant.password||cloudant password
+cloudant.useQuery|false|When enabled, for query not using index or view,
_find will be used instead of _all_docs, some query predicates will be driven
into datastore. However, RDD partition is ONE during _find, so parallel loading
is not achieved
--- End diff --
my $ 0.02c, how about something like this... :
Clouding.optimizeQuery | false | When the optimizeQuery is enabled, the
data source will look for ways to optimize the query execution by rewriting it
or pushing down the execution to the data store. One example is the utilization
of explicit _find with query predicates to be executed in the datastore instead
of _all_docs. However, as RDD partition is ONE during _find, parallel loading
is not achieved.
> Support pushing down query predicates using Cloudant Query / CouchDB Mango
> Query
> --------------------------------------------------------------------------------
>
> Key: BAHIR-102
> URL: https://issues.apache.org/jira/browse/BAHIR-102
> Project: Bahir
> Issue Type: Improvement
> Reporter: Yang Lei
> Assignee: Yang Lei
>
> The feature of Cloudant Query / ChoudDB Mango Query is stated here:
> https://blog.couchdb.org/2016/08/03/feature-mango-query/.
> Will enable pushing down first level AND column filtering to _find selector
> to replace _all_docs for the database query; will continue using skip+limit
> to offer partition and parallel loading.
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
