[
https://issues.apache.org/jira/browse/ARROW-2144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16369296#comment-16369296
]
ASF GitHub Bot commented on ARROW-2144:
---------------------------------------
wesm commented on issue #1599: ARROW-2144: [JS] Don't repeat dictionary lookups
in DataFrame ops
URL: https://github.com/apache/arrow/pull/1599#issuecomment-366745403
Sure, want to try to merge this to see if your gitbox stuff is set up right?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
> [JS] Don't repeat dictionary lookups in DataFrame ops
> -----------------------------------------------------
>
> Key: ARROW-2144
> URL: https://issues.apache.org/jira/browse/ARROW-2144
> Project: Apache Arrow
> Issue Type: Improvement
> Components: JavaScript
> Reporter: Brian Hulette
> Priority: Major
> Labels: pull-request-available
>
> Currently we repeat dictionary lookups every time we bind a new record batch
> when doing an equality check in a DataFrame op
> (https://github.com/apache/arrow/blob/master/js/src/predicate.ts#L143).
> In most cases the dictionary won't be changing between record batches, so we
> should remember these reverse dictionary lookups, either permanently, or at
> least for the duration of the current operation.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
