Brian Hulette created ARROW-2144:
------------------------------------
Summary: [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
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)
