Soumyakanti Das created HIVE-25364: -------------------------------------- Summary: Null Pointer Exception while estimating row count in external tables. Key: HIVE-25364 URL: https://issues.apache.org/jira/browse/HIVE-25364 Project: Hive Issue Type: Bug Reporter: Soumyakanti Das Assignee: Soumyakanti Das
Running the query below for external tables produces NPE because of missing APIs to handle JDBC Converter and JdbcHiveTableScan in [RelMdDistinctRowCount.java|https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/rel/metadata/RelMdDistinctRowCount.java] (calcite). The catch-all method [getDistinctRowCount|https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/rel/metadata/RelMdDistinctRowCount.java#L76] returns null for HiveJdbcConverter and JdbcHiveTableScan, which ultimately results in a null value for *computeInnerJoinSelectivity(j, mq, predicate)* method shown below. {code:java} double innerJoinSelectivity = computeInnerJoinSelectivity(j, mq, predicate); {code} Query: {code} explain cbo with t1 as (select fkey, ikey, sum(dkey) as dk_sum, sum(dkey2) as dk2_sum from ext_simple_derby_table1 left join ext_simple_derby_table3 on ikey = ikey2 where fkey2 is null group by fkey, ikey), t2 as (select datekey, fkey, ikey, sum(dkey) as dk_sum2, sum(dkey2) as dk2_sum2 from ext_simple_derby_table2 left join ext_simple_derby_table4 on ikey = ikey2 where fkey2 is null group by datekey, fkey, ikey) select t1.fkey, t2.ikey, sum(t1.ikey) from t1 left join t2 on t1.ikey = t2.ikey AND t1.fkey = t2.fkey where t2.fkey is null group by t2.datekey, t1.fkey, t2.ikey {code} The stacktrace: {code} java.lang.NullPointerException at org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdSelectivity.getSelectivity(HiveRelMdSelectivity.java:78) at GeneratedMetadataHandler_Selectivity.getSelectivity_$(Unknown Source) at GeneratedMetadataHandler_Selectivity.getSelectivity(Unknown Source) at GeneratedMetadataHandler_Selectivity.getSelectivity_$(Unknown Source) at GeneratedMetadataHandler_Selectivity.getSelectivity(Unknown Source) at org.apache.calcite.rel.metadata.RelMetadataQuery.getSelectivity(RelMetadataQuery.java:426) at org.apache.calcite.rel.metadata.RelMdUtil.estimateFilteredRows(RelMdUtil.java:765) at org.apache.calcite.rel.metadata.RelMdRowCount.getRowCount(RelMdRowCount.java:131) at org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdRowCount.getRowCount(HiveRelMdRowCount.java:175) at org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdRuntimeRowCount.getRowCount(HiveRelMdRuntimeRowCount.java:53) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:212) at org.apache.calcite.rel.metadata.RelMdRowCount.getRowCount(RelMdRowCount.java:205) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:212) at org.apache.calcite.rel.metadata.RelMdRowCount.getRowCount(RelMdRowCount.java:140) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:212) at org.apache.calcite.rel.metadata.RelMdUtil.getJoinRowCount(RelMdUtil.java:723) at org.apache.calcite.rel.core.Join.estimateRowCount(Join.java:205) at org.apache.hadoop.hive.ql.optimizer.calcite.stats.HiveRelMdRowCount.getRowCount(HiveRelMdRowCount.java:113) at GeneratedMetadataHandler_RowCount.getRowCount_$(Unknown Source) at GeneratedMetadataHandler_RowCount.getRowCount(Unknown Source) at org.apache.calcite.rel.metadata.RelMetadataQuery.getRowCount(RelMetadataQuery.java:212) at org.apache.hadoop.hive.ql.optimizer.calcite.stats.FilterSelectivityEstimator.<init>(FilterSelectivityEstimator.java:62) at org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveFilterSortPredicates$RexSortPredicatesShuttle.<init>(HiveFilterSortPredicates.java:126) at org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveFilterSortPredicates$RexSortPredicatesShuttle.<init>(HiveFilterSortPredicates.java:120) at org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveFilterSortPredicates.onMatch(HiveFilterSortPredicates.java:91) at org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:333) at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:542) at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:407) at org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:243) at org.apache.calcite.plan.hep.HepInstruction$RuleInstance.execute(HepInstruction.java:127) at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:202) at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:189) at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.executeProgram(CalcitePlanner.java:2440) at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.executeProgram(CalcitePlanner.java:2406) at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.applyPostJoinOrderingTransform(CalcitePlanner.java:2326) at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:1735) at org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:1588) at org.apache.calcite.tools.Frameworks.lambda$withPlanner$0(Frameworks.java:131) at org.apache.calcite.prepare.CalcitePrepareImpl.perform(CalcitePrepareImpl.java:914) at org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:180) at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:126) at org.apache.hadoop.hive.ql.parse.CalcitePlanner.logicalPlan(CalcitePlanner.java:1340) at org.apache.hadoop.hive.ql.parse.CalcitePlanner.genOPTree(CalcitePlanner.java:559) at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:12513) at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:452) at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:317) at org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:175) at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:317) at org.apache.hadoop.hive.ql.Compiler.analyze(Compiler.java:223) at org.apache.hadoop.hive.ql.Compiler.compile(Compiler.java:105) at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:500) at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:453) at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:417) at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:411) at org.apache.hadoop.hive.ql.reexec.ReExecDriver.compileAndRespond(ReExecDriver.java:125) at org.apache.hadoop.hive.ql.reexec.ReExecDriver.run(ReExecDriver.java:229) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:256) at org.apache.hadoop.hive.cli.CliDriver.processCmd1(CliDriver.java:201) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:127) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:422) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:353) at org.apache.hadoop.hive.ql.QTestUtil.executeClientInternal(QTestUtil.java:744) at org.apache.hadoop.hive.ql.QTestUtil.executeClient(QTestUtil.java:714) at org.apache.hadoop.hive.cli.control.CoreCliDriver.runTest(CoreCliDriver.java:170) at org.apache.hadoop.hive.cli.control.CliAdapter.runTest(CliAdapter.java:157) at org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver(TestMiniLlapLocalCliDriver.java:62) 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:59) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.apache.hadoop.hive.cli.control.CliAdapter$2$1.evaluate(CliAdapter.java:135) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63) at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at org.junit.runners.ParentRunner.run(ParentRunner.java:413) at org.junit.runners.Suite.runChild(Suite.java:128) at org.junit.runners.Suite.runChild(Suite.java:27) at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329) at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293) at org.apache.hadoop.hive.cli.control.CliAdapter$1$1.evaluate(CliAdapter.java:95) at org.junit.rules.RunRules.evaluate(RunRules.java:20) at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306) at org.junit.runners.ParentRunner.run(ParentRunner.java:413) at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365) at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273) at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238) at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159) at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:377) at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:138) at org.apache.maven.surefire.booter.ForkedBooter.run(ForkedBooter.java:465) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:451) {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)