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https://issues.apache.org/jira/browse/IMPALA-11144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Noemi Pap-Takacs resolved IMPALA-11144.
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Fix Version/s: Impala 4.1.0
Resolution: Fixed
> verifyApproxCardinality() failed in
> testAggregationNodeGroupByCardinalityCapping
> --------------------------------------------------------------------------------
>
> Key: IMPALA-11144
> URL: https://issues.apache.org/jira/browse/IMPALA-11144
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 4.1.0
> Reporter: Fang-Yu Rao
> Assignee: Noemi Pap-Takacs
> Priority: Major
> Labels: broken-build
> Fix For: Impala 4.1.0
>
>
> We found in recent builds in
> https://jenkins.impala.io/job/ubuntu-16.04-from-scratch/15800/testReport/junit/org.apache.impala.planner/CardinalityTest/testAggregationNodeGroupByCardinalityCapping/
> that the relative difference between the estimated cardinality and the true
> cardinality of an {{AggregationNode}} is larger than
> {{CARDINALITY_TOLERANCE}}, which is set to 0.05. We may consider increasing
> {{CARDINALITY_TOLERANCE}} to a higher value, e.g., 0.07 to make the related
> tests less flaky.
> {code}
> Error Message
> Cardinality error for: select distinct id, int_col from
> functional_parquet.alltypes expected:<12760.0> but was:<11966.0>
> Stacktrace
> java.lang.AssertionError: Cardinality error for: select distinct id, int_col
> from functional_parquet.alltypes expected:<12760.0> but was:<11966.0>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:553)
> at
> org.apache.impala.planner.CardinalityTest.verifyApproxCardinality(CardinalityTest.java:1111)
> at
> org.apache.impala.planner.CardinalityTest.testAggregationNodeGroupByCardinalityCapping(CardinalityTest.java:367)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:272)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:236)
> at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
> at
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:386)
> at
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:323)
> at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:143)
> {code}
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