Hi,All:
我再尝试编译flink 1.7的源码时，遇到如下错误，本人对scala不是很了解，不知道是不是版本问题引起，另外可以去掉sacla模块编译吗：
本机scala版本：2.13.0
JDK 版本： 1.8.0_91
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on
project flink-scala_2.11: Compilation failure: Compilation failure:
[ERROR]
/Users/gang.gou/work/git/github/flink/flink-scala/src/main/java/org/apache/flink/api/scala/typeutils/ScalaEitherSerializerSnapshot.java:[67,44]
不兼容的类型: 无法推断org.apache.flink.api.java.typeutils.runtime.EitherSerializer<>的类型参数
[ERROR] 原因: 不存在类型变量L,R,T,T的实例,
以使org.apache.flink.api.java.typeutils.runtime.EitherSerializer<L,R>与org.apache.flink.api.common.typeutils.TypeSerializer<scala.util.Either<L,R>>一致
[ERROR]
/Users/gang.gou/work/git/github/flink/flink-scala/src/main/java/org/apache/flink/api/scala/typeutils/ScalaEitherSerializerSnapshot.java:[78,86]
不兼容的类型:
org.apache.flink.api.common.typeutils.TypeSerializer<scala.util.Either<L,R>>无法转换为org.apache.flink.api.java.typeutils.runtime.EitherSerializer<L,R>
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :flink-scala_2.11
Process finished with exit code 1
--
Best Wishes
Galen.K
