Paul Rogers created DRILL-7733:
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Summary: Use streaming for REST JSON queries
Key: DRILL-7733
URL: https://issues.apache.org/jira/browse/DRILL-7733
Project: Apache Drill
Issue Type: Improvement
Affects Versions: 1.17.0
Reporter: Paul Rogers
Assignee: Paul Rogers
Fix For: 1.18.0
Several uses on the user and dev mail lists have complained about the memory
overhead when running a REST JSON query: {{http:://node:8047/query.json}}. The
current implementation buffers the entire result set in memory, then lets
Jersey/Jetty convert the results to JSON. The result is very heavy heap use for
larger query result sets.
This ticket requests a change to use streaming. As each batch arrives at the
Screen operator, convert that batch to JSON and directly stream the results to
the client network connection, much as is done for the native client connection.
For backward compatibility, the form of the JSON must be the same as the
current API.
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