[MINOR] Fix ClassCastException when use QuickstartUtils generate data

[wangxianghu]

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What is the purpose of the pull request

Fix ClassCastException when use QuickstartUtils generate data

Brief change log

step to reproduce

  @Test
  def insert(): Unit = {
    val inserts = convertToStringList(dataGen.generateInserts(10))
    val df = spark.read.json(spark.sparkContext.parallelize(inserts, 2))
     df.show()
  }

log:

java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Double

	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:133)
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:75)
	at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:166)
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:156)
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:118)
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:75)
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:62)
	at org.apache.hudi.avro.HoodieAvroUtils.indexedRecordToBytes(HoodieAvroUtils.java:100)
	at org.apache.hudi.avro.HoodieAvroUtils.avroToBytes(HoodieAvroUtils.java:92)
	at org.apache.hudi.common.model.BaseAvroPayload.<init>(BaseAvroPayload.java:49)
	at org.apache.hudi.common.model.OverwriteWithLatestAvroPayload.<init>(OverwriteWithLatestAvroPayload.java:43)
	at org.apache.hudi.common.model.OverwriteWithLatestAvroPayload.<init>(OverwriteWithLatestAvroPayload.java:47)
	at org.apache.hudi.QuickstartUtils$DataGenerator.generateRandomValue(QuickstartUtils.java:122)
	at org.apache.hudi.QuickstartUtils$DataGenerator.lambda$generateInsertsStream$0(QuickstartUtils.java:137)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.IntPipeline$4$1.accept(IntPipeline.java:250)
	at java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:110)
	at java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:693)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
	at org.apache.hudi.QuickstartUtils$DataGenerator.generateInserts(QuickstartUtils.java:149)
	at com.maxiu.hudi.HudiDemoTest.insert(HudiDemoTest.scala:36)
	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:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	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.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

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This pull request is a trivial rework / code cleanup without any test coverage.

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This pull request is already covered by existing tests, such as (please describe tests).

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Committer checklist

• Has a corresponding JIRA in PR title & commit

• Commit message is descriptive of the change

• CI is green

• Necessary doc changes done or have another open PR

• For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.

[wangxianghu]

@yanghua please take a look when free

[wangxianghu]

@bhasudha This exception occurs because the methods to generate data in QuickstartUtils treat ts field as long type, while the schema provided by QuickstartUtils shows ts is double type.

[bhasudha]

LGTM. I believe this change was introduced a week back or so from this pr - #2071

[wangxianghu]

LGTM. I believe this change was introduced a week back or so from this pr - #2071

yes, it's a small oversight.
thanks for your review