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https://issues.apache.org/jira/browse/ARROW-6866?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-6866:
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Labels: pull-request-available (was: )
> [Java] Improve the performance of calculating hash code for struct vector
> -------------------------------------------------------------------------
>
> Key: ARROW-6866
> URL: https://issues.apache.org/jira/browse/ARROW-6866
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Java
> Reporter: Liya Fan
> Assignee: Liya Fan
> Priority: Minor
> Labels: pull-request-available
>
> Improve the performance of hashCode(int) method for StructVector:
> 1. We can get the child vectors directly, so there is no need to get the name
> from the child vector and then use the name to get the vector.
> 2. The child vectors cannot be null, so there is no need to check it.
> The performance improvement depends on the complexity of the hash algorithm.
> For computational intensive hash algorithms, the improvement can be small;
> while for simple hash algorithms, the improvement can be notable.
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