出现以下异常的原因是因为同包中有相同的类名了 Error:(73, 12) SensorReading is already defined as case class SensorReading case class SensorReading(id: String, timestamp: Long, temperature: Double) 管用请你点这里... 查看原文 Flink 的时间语义与Wartermark ...
我有一个 scala 项目,当从命令行使用 SBT 时,它可以正常编译、运行和测试。但是,在intellij中构建项目时,项目中的每个类的事件日志中似乎都有此错误,导致构建失败: SendCommandToService is already defined as case class SendCommandToService case class SendCommandToService(service: String, commandName: String, ...
问题 运行Flink scala程序时,提示如下错误,但仔细检查UserBehavior样例类的确仅定义了一次。 解决 右击重新编译代码,再运行。至于原因还不清楚。
解决:UserBehavior is already defined as case class UserBehavior,问题运行Flinkscala程序时,提示如下错误,但仔细检查UserBehavior样例类的确仅定义了一次。解决右击重新编译代码,再运行。至于原因还不清楚。
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sqlalchemy.exc.ProgrammingError: (psycopg2.errors.DuplicateTable) relation"ix_hero_name"already exists [SQL: CREATE INDEX ix_hero_name ON hero (name)] Moving thecreate_db_and_tables()out of the functions startup event fixes this problem and everything works as expected ...
i am no maven expert, but doesnt this mean that 1) and 2) is already respected? It's a bit more complex, as there are quite a few ways to set this in maven (multiple properties, config on the compiler plug-in). And I also started looking at gradle, but nothing finished there yet...
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'<member>' is already declared in this structure '<member>', implicitly defined for '<eventname>', cannot shadow a 'MustOverride' method in the base <class> '<classname>' '<membername>' cannot be declared 'Shadows' outside of a class, structure, or interface '<membername>' cannot ...