20200813-Exception-NumberFormatException-Not-a-version

1. 异常说明

今天写了一段 Flink 窗口 function 的代码运行的时候抛出一个 NumberFormatException: Not a version: 9 的异常，异常信息如下：

Exception in thread "main" org.apache.flink.shaded.guava18.com.google.common.util.concurrent.UncheckedExecutionException: java.lang.NumberFormatException: Not a version: 9at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2203)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache.get(LocalCache.java:3937)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4739)at org.apache.flink.api.scala.typeutils.TraversableSerializer$.compileCbf(TraversableSerializer.scala:184)at org.apache.flink.api.scala.typeutils.TraversableSerializer.compileCbf(TraversableSerializer.scala:51)at org.apache.flink.api.scala.typeutils.TraversableSerializer.<init>(TraversableSerializer.scala:41)at com.hnbian.flink.window.function.TestAggregateFunction$$anon$6$$anon$5.<init>(TestAggregateFunction.scala:30)at com.hnbian.flink.window.function.TestAggregateFunction$$anon$6.createSerializer(TestAggregateFunction.scala:30)at com.hnbian.flink.window.function.TestAggregateFunction$$anon$6.createSerializer(TestAggregateFunction.scala:30)at org.apache.flink.api.java.typeutils.PojoTypeInfo.createPojoSerializer(PojoTypeInfo.java:319)at org.apache.flink.api.java.typeutils.PojoTypeInfo.createSerializer(PojoTypeInfo.java:311)at org.apache.flink.streaming.api.datastream.WindowedStream.aggregate(WindowedStream.java:837)at org.apache.flink.streaming.api.datastream.WindowedStream.aggregate(WindowedStream.java:730)at org.apache.flink.streaming.api.scala.WindowedStream.aggregate(WindowedStream.scala:280)at com.hnbian.flink.window.function.TestAggregateFunction$.delayedEndpoint$com$hnbian$flink$window$function$TestAggregateFunction$1(TestAggregateFunction.scala:30)at com.hnbian.flink.window.function.TestAggregateFunction$delayedInit$body.apply(TestAggregateFunction.scala:17)at scala.Function0$class.apply$mcV$sp(Function0.scala:34)at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)at scala.App$$anonfun$main$1.apply(App.scala:76)at scala.App$$anonfun$main$1.apply(App.scala:76)at scala.collection.immutable.List.foreach(List.scala:381)at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35)at scala.App$class.main(App.scala:76)at com.hnbian.flink.window.function.TestAggregateFunction$.main(TestAggregateFunction.scala:17)at com.hnbian.flink.window.function.TestAggregateFunction.main(TestAggregateFunction.scala)
Caused by: java.lang.NumberFormatException: Not a version: 9at scala.util.PropertiesTrait$class.parts$1(Properties.scala:184)at scala.util.PropertiesTrait$class.isJavaAtLeast(Properties.scala:187)at scala.util.Properties$.isJavaAtLeast(Properties.scala:17)at scala.tools.util.PathResolverBase$Calculated$.javaBootClasspath(PathResolver.scala:276)at scala.tools.util.PathResolverBase$Calculated$.basis(PathResolver.scala:283)at scala.tools.util.PathResolverBase$Calculated$.containers$lzycompute(PathResolver.scala:293)at scala.tools.util.PathResolverBase$Calculated$.containers(PathResolver.scala:293)at scala.tools.util.PathResolverBase.containers(PathResolver.scala:309)at scala.tools.util.PathResolver.computeResult(PathResolver.scala:341)at scala.tools.util.PathResolver.computeResult(PathResolver.scala:332)at scala.tools.util.PathResolverBase.result(PathResolver.scala:314)at scala.tools.nsc.backend.JavaPlatform$class.classPath(JavaPlatform.scala:28)at scala.tools.nsc.Global$GlobalPlatform.classPath(Global.scala:115)at scala.tools.nsc.Global.scala$tools$nsc$Global$$recursiveClassPath(Global.scala:131)at scala.tools.nsc.Global.classPath(Global.scala:128)at scala.tools.nsc.backend.jvm.BTypesFromSymbols.<init>(BTypesFromSymbols.scala:39)at scala.tools.nsc.backend.jvm.BCodeIdiomatic.<init>(BCodeIdiomatic.scala:24)at scala.tools.nsc.backend.jvm.BCodeHelpers.<init>(BCodeHelpers.scala:23)at scala.tools.nsc.backend.jvm.BCodeSkelBuilder.<init>(BCodeSkelBuilder.scala:25)at scala.tools.nsc.backend.jvm.BCodeBodyBuilder.<init>(BCodeBodyBuilder.scala:25)at scala.tools.nsc.backend.jvm.BCodeSyncAndTry.<init>(BCodeSyncAndTry.scala:21)at scala.tools.nsc.backend.jvm.GenBCode.<init>(GenBCode.scala:47)at scala.tools.nsc.Global$genBCode$.<init>(Global.scala:675)at scala.tools.nsc.Global.genBCode$lzycompute(Global.scala:671)at scala.tools.nsc.Global.genBCode(Global.scala:671)at scala.tools.nsc.backend.jvm.GenASM$JPlainBuilder.serialVUID(GenASM.scala:1240)at scala.tools.nsc.backend.jvm.GenASM$JPlainBuilder.genClass(GenASM.scala:1329)at scala.tools.nsc.backend.jvm.GenASM$AsmPhase.emitFor$1(GenASM.scala:198)at scala.tools.nsc.backend.jvm.GenASM$AsmPhase.run(GenASM.scala:204)at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1528)at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1513)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$ToolBoxGlobal.wrapInPackageAndCompile(ToolBoxFactory.scala:197)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$ToolBoxGlobal.compile(ToolBoxFactory.scala:252)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$$anonfun$compile$2.apply(ToolBoxFactory.scala:429)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$$anonfun$compile$2.apply(ToolBoxFactory.scala:422)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$withCompilerApi$.liftedTree2$1(ToolBoxFactory.scala:355)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl$withCompilerApi$.apply(ToolBoxFactory.scala:355)at scala.tools.reflect.ToolBoxFactory$ToolBoxImpl.compile(ToolBoxFactory.scala:422)at org.apache.flink.api.scala.typeutils.TraversableSerializer$LazyRuntimeCompiler.compileCbfInternal(TraversableSerializer.scala:230)at org.apache.flink.api.scala.typeutils.TraversableSerializer$LazyRuntimeCompiler.call(TraversableSerializer.scala:220)at org.apache.flink.api.scala.typeutils.TraversableSerializer$LazyRuntimeCompiler.call(TraversableSerializer.scala:216)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4742)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3527)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2319)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2282)at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2197)... 24 more

2. 异常原因

版本冲突导致flink在寻找guava版本的时候shaded错误导致此异常。

3. 解决办法

可以在maven中将引入的 Scala 版本改为 2.11.8。

<dependency><groupId>org.scala-lang</groupId><artifactId>scala-library</artifactId><version>2.11.8</version>
</dependency>
<dependency><groupId>org.scala-lang</groupId><artifactId>scala-compiler</artifactId><version>2.11.8</version>
</dependency>

4.参考文档

https://blog.csdn.net/qq_36932624/article/details/107230200

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