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Micah Kornfield resolved ARROW-4095. ------------------------------------ Resolution: Fixed Issue resolved by pull request 5230 [https://github.com/apache/arrow/pull/5230] > [C++] Implement optimizations for dictionary unification where dictionaries > are prefixes of the unified dictionary > ------------------------------------------------------------------------------------------------------------------ > > Key: ARROW-4095 > URL: https://issues.apache.org/jira/browse/ARROW-4095 > Project: Apache Arrow > Issue Type: Improvement > Components: C++ > Reporter: Wes McKinney > Assignee: Antoine Pitrou > Priority: Major > Labels: pull-request-available > Fix For: 0.15.0 > > Time Spent: 0.5h > Remaining Estimate: 0h > > In the event that the unified dictionary contains other dictionaries as > prefixes (e.g. as the result of delta dictionaries), we can avoid memory > allocation and index transposition. > See discussion at > https://github.com/apache/arrow/pull/3165#discussion_r243020982 -- This message was sent by Atlassian Jira (v8.3.2#803003)