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Posted to issues@calcite.apache.org by "Muhammad Gelbana (JIRA)" <ji...@apache.org> on 2018/05/22 15:31:00 UTC
[jira] [Closed] (CALCITE-2228) An inevitable NPE while using MAX
aggregation function
[ https://issues.apache.org/jira/browse/CALCITE-2228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Muhammad Gelbana closed CALCITE-2228.
-------------------------------------
Resolution: Duplicate
> An inevitable NPE while using MAX aggregation function
> ------------------------------------------------------
>
> Key: CALCITE-2228
> URL: https://issues.apache.org/jira/browse/CALCITE-2228
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.16.0
> Reporter: Muhammad Gelbana
> Assignee: Julian Hyde
> Priority: Major
>
> Looking at this [line|https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/interpreter/AggregateNode.java#L150], and the referenced [instance variable|https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/adapter/enumerable/AggImpState.java#L33], it looks to me that
> {code:java}
> int stateSize = agg.state.size{code}
> will always throw a *NPE* because the *agg.state* object reference is never initialized before it's being used !
> I'm facing the following exception
> {noformat}
> java.sql.SQLException: Error while executing SQL "SELECT MAX(COUNTRY_ID), MAX(COUNTRY_TOTAL_ID) FROM SALES.COUNTRIES": null
> at org.apache.calcite.avatica.Helper.createException(Helper.java:56)
> at org.apache.calcite.avatica.Helper.createException(Helper.java:41)
> at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:156)
> at org.apache.calcite.avatica.AvaticaStatement.executeQuery(AvaticaStatement.java:218)
> at com.mg.sqlinterface.data.provider.calcite.internal.Test_SQLi.testMG(Test_SQLi.java:35)
> 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.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$2.evaluate(ParentRunner.java:268)
> at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
> at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
> at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
> Caused by: java.lang.NullPointerException
> at org.apache.calcite.interpreter.AggregateNode.getAccumulator(AggregateNode.java:150)
> at org.apache.calcite.interpreter.AggregateNode.<init>(AggregateNode.java:86)
> at org.apache.calcite.interpreter.Nodes$CoreCompiler.visit(Nodes.java:47)
> 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.apache.calcite.util.ReflectUtil.invokeVisitorInternal(ReflectUtil.java:257)
> at org.apache.calcite.util.ReflectUtil.invokeVisitor(ReflectUtil.java:214)
> at org.apache.calcite.util.ReflectUtil$1.invokeVisitor(ReflectUtil.java:464)
> at org.apache.calcite.interpreter.Interpreter$Compiler.visit(Interpreter.java:480)
> at org.apache.calcite.interpreter.Interpreter$Compiler.visitRoot(Interpreter.java:437)
> at org.apache.calcite.interpreter.Interpreter.<init>(Interpreter.java:78)
> at Baz.bind(Unknown Source)
> at org.apache.calcite.jdbc.CalcitePrepare$CalciteSignature.enumerable(CalcitePrepare.java:365)
> at org.apache.calcite.jdbc.CalciteConnectionImpl.enumerable(CalciteConnectionImpl.java:301)
> at org.apache.calcite.jdbc.CalciteMetaImpl._createIterable(CalciteMetaImpl.java:559)
> at org.apache.calcite.jdbc.CalciteMetaImpl.createIterable(CalciteMetaImpl.java:550)
> at org.apache.calcite.avatica.AvaticaResultSet.execute(AvaticaResultSet.java:204)
> at org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:67)
> at org.apache.calcite.jdbc.CalciteResultSet.execute(CalciteResultSet.java:44)
> at org.apache.calcite.avatica.AvaticaConnection$1.execute(AvaticaConnection.java:630)
> at org.apache.calcite.jdbc.CalciteMetaImpl.prepareAndExecute(CalciteMetaImpl.java:619)
> at org.apache.calcite.avatica.AvaticaConnection.prepareAndExecuteInternal(AvaticaConnection.java:638)
> at org.apache.calcite.avatica.AvaticaStatement.executeInternal(AvaticaStatement.java:149)
> ... 27 more{noformat}
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