[ https://issues.apache.org/jira/browse/ARROW-2144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brian Hulette reassigned ARROW-2144: ------------------------------------ Assignee: Brian Hulette > [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 > Assignee: Brian Hulette > Priority: Major > Labels: pull-request-available > Fix For: JS-0.3.0 > > > 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)