[
https://issues.apache.org/jira/browse/ARROW-5814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ASF GitHub Bot updated ARROW-5814:
----------------------------------
Labels: pull-request-available (was: )
> [Java] Implement a <Object, int> HashMap for DictionaryEncoder
> --------------------------------------------------------------
>
> Key: ARROW-5814
> URL: https://issues.apache.org/jira/browse/ARROW-5814
> Project: Apache Arrow
> Issue Type: Improvement
> Reporter: Ji Liu
> Assignee: Ji Liu
> Priority: Minor
> Labels: pull-request-available
>
> As a follow-up of
> [ARROW-5726|https://issues.apache.org/jira/browse/ARROW-5726]. Implement a
> Map<Object, int> for DictionaryEncoder to reduce boxing/unboxing operations.
> Benchmark:
> DictionaryEncodeHashMapBenchmarks.testHashMap: avgt 5 31151.345 ± 1661.878
> ns/op
> DictionaryEncodeHashMapBenchmarks.testDictionaryEncodeHashMap: avgt 5
> 15549.902 ± 771.647 ns/op
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
