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  1. Calcite
  2. CALCITE-3246

RelJsonReader throws NullPointerException while deserializing from JSON a call to a user-defined function (UDF)

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      Description

      when deserializing of logical rel with udf operator, NPE occurs.

      The exception stacktrace as follow.

      java.lang.RuntimeException: java.lang.NullPointerException
      
      	at org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:181)
      	at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:125)
      	at org.apache.calcite.tools.Frameworks.withPlanner(Frameworks.java:143)
      	at org.apache.calcite.plan.RelWriterTest.testUdf(RelWriterTest.java:598)
      	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$2.evaluate(ParentRunner.java:268)
      	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
      	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
      	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
      	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
      	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
      Caused by: java.lang.NullPointerException
      	at java.util.Objects.requireNonNull(Objects.java:203)
      	at org.apache.calcite.rex.RexCall.<init>(RexCall.java:83)
      	at org.apache.calcite.rex.RexBuilder.makeCall(RexBuilder.java:237)
      	at org.apache.calcite.rel.externalize.RelJson.toRex(RelJson.java:485)
      	at org.apache.calcite.rel.externalize.RelJsonReader$2.getExpressionList(RelJsonReader.java:204)
      	at org.apache.calcite.rel.core.Project.<init>(Project.java:100)
      	at org.apache.calcite.rel.logical.LogicalProject.<init>(LogicalProject.java:88)
      	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
      	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
      	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
      	at org.apache.calcite.rel.externalize.RelJsonReader.readRel(RelJsonReader.java:261)
      	at org.apache.calcite.rel.externalize.RelJsonReader.readRels(RelJsonReader.java:91)
      	at org.apache.calcite.rel.externalize.RelJsonReader.read(RelJsonReader.java:85)
      	at org.apache.calcite.plan.RelWriterTest.lambda$testUdf$7(RelWriterTest.java:603)
      	at org.apache.calcite.tools.Frameworks.lambda$withPlanner$0(Frameworks.java:130)
      	at org.apache.calcite.prepare.CalcitePrepareImpl.perform(CalcitePrepareImpl.java:915)
      	at org.apache.calcite.tools.Frameworks.withPrepare(Frameworks.java:179)
      	... 25 more
      

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            • Assignee:
              Chunwei Lei Chunwei Lei
              Reporter:
              yanlin-Lynn Wang Yanlin
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                Updated:
                Resolved:

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