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https://issues.apache.org/jira/browse/DRILL-7730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17111639#comment-17111639
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ASF GitHub Bot commented on DRILL-7730:
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cgivre merged pull request #2075:
URL: https://github.com/apache/drill/pull/2075
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> Reduce overhead of web queries displayed in HTML
> ------------------------------------------------
>
> Key: DRILL-7730
> URL: https://issues.apache.org/jira/browse/DRILL-7730
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.17.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Major
> Fix For: 1.18.0
>
>
> Drill provides a web console to run queries. Query results appear as HTML
> pages. Drill buffers the query results in-memory to build the page. The
> current approach has two problems (in addition to the overhead of buffering):
> * To move each batch from Screen to the REST client, we serialize all vectors
> into a single large buffer, then recreate the individual vectors.
> * The code appends column names and metadata for each batch. For a
> multi-batch query, we end up with lists that contain many copies of the same
> data.
> This change modifies the internal plumbing to transfer a record batch from
> Screen to REST without copying.
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