Aihua Xu created HIVE-11617: ------------------------------- Summary: Explain plan for multiple lateral views is very slow Key: HIVE-11617 URL: https://issues.apache.org/jira/browse/HIVE-11617 Project: Hive Issue Type: Bug Components: Logical Optimizer Reporter: Aihua Xu Assignee: Aihua Xu
The following explain job will be very slow or never finish if there are many lateral views involved. High CPU usage is also noticed. {noformat} EXPLAIN SELECT * from ( SELECT * FROM table1 ) x LATERAL VIEW json_tuple(...) x1 LATERAL VIEW json_tuple(...) x2 ... {noformat} >From jstack, the job is busy with preorder tree traverse. {noformat} at java.util.regex.Matcher.getTextLength(Matcher.java:1234) at java.util.regex.Matcher.reset(Matcher.java:308) at java.util.regex.Matcher.<init>(Matcher.java:228) at java.util.regex.Pattern.matcher(Pattern.java:1088) at org.apache.hadoop.hive.ql.lib.RuleRegExp.cost(RuleRegExp.java:67) at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:72) at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:94) at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:78) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:56) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:61) at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:109) at org.apache.hadoop.hive.ql.optimizer.lineage.Generator.transform(Generator.java:95) at org.apache.hadoop.hive.ql.optimizer.Optimizer.optimize(Optimizer.java:182) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10216) at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:192) at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:222) at org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74) at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:222) at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:421) at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:307) at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1110) - locked <0x00000007f0eb9e28> (a java.lang.Object) at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1158) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1047) at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1037) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:207) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:159) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:370) at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:756) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675) at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:615) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.util.RunJar.run(RunJar.java:221) {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)