flink报错：Caused by: java.lang.NumberFormatException: Not a version: 9

最新推荐文章于 2024-09-14 17:38:36 发布

RayBreslin

最新推荐文章于 2024-09-14 17:38:36 发布

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分类专栏： Flink 文章标签： java flink scala

本文链接：https://blog.youkuaiyun.com/u010886217/article/details/120208328

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本文介绍了在使用Flink执行复杂事件处理(CEP)时遇到的`NumberFormatException`错误，该错误是由于scala版本不一致和guava版本冲突导致的。解决方案是在pom.xml文件中添加scala-library和scala-compiler的2.11.8版本依赖，以确保版本匹配，从而解决编译问题。

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一、问题描述

flink执行CEP的时候，报错

Caused by: java.lang.NumberFormatException: Not a version: 9
	at 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 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)

二、问题原因

参考其他文章，应该是版本冲突导致flink在寻找guava版本的时候shaded错误。
编译器引用的scala-sdk版本是2.11.8 但是maven引入的scala-library和scala-reflect都是2.11.12

三、解决

在pom依赖中添加

<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>