Xianqing He created IMPALA-10799: ------------------------------------ Summary: Analysis slowdown with inline views and thousands of column Key: IMPALA-10799 URL: https://issues.apache.org/jira/browse/IMPALA-10799 Project: IMPALA Issue Type: Improvement Components: Frontend Reporter: Xianqing He Assignee: Xianqing He
If there are thousands of columns in the inlineview, it‘s very slow in analysis. For example, this sql will take almost 4s in analysis. {code:java} select c1 from (select c1, c2... c10000 from T) T Query Compilation: 3s880ms - Translate start: 968.000ns (968.000ns) - Translate finished: 4.318ms (4.317ms) - Metadata of all 1 tables cached: 42.219ms (37.900ms) - Analysis finished: 3s776ms (3s734ms) - Value transfer graph computed: 3s806ms (30.163ms) - Single node plan created: 3s869ms (62.556ms) - Runtime filters computed: 3s874ms (5.603ms) - Distributed plan created: 3s874ms (128.086us) - Planning finished: 3s880ms (5.836ms) {code} -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org