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)