Wang Yanlin created CALCITE-3316:
Summary: Exception while deserializing LogicalCorrelate from json
string
Key: CALCITE-3316
URL: https://issues.apache.org/jira/browse/CALCITE-3316
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Wang Yanlin
When deserializing LogicalCorrelate, we get
{code:java}
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.testCorrelateQuery(RelWriterTest.java:686)
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
org.apache.calcite.rel.logical.LogicalCorrelate.(LogicalCorrelate.java:83)
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$testCorrelateQuery$9(RelWriterTest.java:691)
at
org.apache.calcite.tools.Frameworks.lambda$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
{code}
And, after fix the NPE, get
{code:java}
java.lang.RuntimeException: java.lang.ClassCastException: java.lang.String
cannot be cast to java.util.List
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.testCorrelateQuery(RelWriterTest.java:686)
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
