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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-11617) Explain plan for multiple lateral views is very slow
Date Fri, 21 Aug 2015 12:21:45 GMT
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}




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