Wenzhe Zhou created IMPALA-12983:
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Summary: Push down 'order by' to remote database server
Key: IMPALA-12983
URL: https://issues.apache.org/jira/browse/IMPALA-12983
Project: IMPALA
Issue Type: Sub-task
Components: Frontend
Reporter: Wenzhe Zhou
"order by" cannot be pushed down to JDBC right now, but most of tpcds/tpch
queries are using "order by ... limit ...", e.g top n. This results JDBC
handler to retrieve all rows of remote table on remote database server, hence
bad performance.
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