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https://issues.apache.org/jira/browse/ARROW-7177?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated ARROW-7177:
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Labels: pull-request-available (was: )
> [Java] Provide a utility to improve the performance of vector
> loading/unloading
> -------------------------------------------------------------------------------
>
> Key: ARROW-7177
> URL: https://issues.apache.org/jira/browse/ARROW-7177
> Project: Apache Arrow
> Issue Type: New Feature
> Components: Java
> Reporter: Liya Fan
> Assignee: Liya Fan
> Priority: Major
> Labels: pull-request-available
>
> Vector loading/unloading transforms a set of vectors to and from a set of
> buffers with meta data. It is heavily used in flight/IPC.
> In the loading/unloading operations, only the number of type buffers are
> really needed. However, the current code logic gets a copy of the type
> buffers, which is not necessary.
> In this issue, we provide a utility to get the number of type buffers, given
> an arrow type. It improves the performance by
> 1. avoiding creating objects unnecessarily.
> 2. avoiding list copying for vector unloading (which calls
> TypeLayout#getBufferTypes).
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