各位大佬，请教一下编译Flink 1.9 的问题，编译 flink-table-api-java 的时候 只
要有 “.orElseThrow(() -> new ValidationException("Undefined function: " +
lookupCall.getUnresolvedName()));” 就不能通过编译，jdk版本是 1.8.0_91，请
问各位大佬应该怎么处理。
报错如下：
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile
(default-compile) on project flink-table-api-java: Compilation failure
[ERROR]
/home/venn/git/flink/flink-table/flink-table-api-java/src/main/java/org/apac
he/flink/table/operations/utils/factories/CalculatedTableFactory.java:[90,53
] unreported exception X; must be caught or declared to be thrown
[ERROR]
[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 <args> -rf :flink-table-api-java
