[Ben Yan <ya...@gmail.com>]

The following is the environment I use：
1. flink.version: 1.9.0
2. java version "1.8.0_212"
3. scala version: 2.11.12

When I wrote the following code in the scala programming language, I found
the following error：

// set up the batch execution environment
val bbSettings =
EnvironmentSettings.newInstance().useBlinkPlanner().inBatchMode().build()
val bbTableEnv = TableEnvironment.create(bbSettings)

error: Static methods in interface require -target:jvm-1.8
[ERROR] val bbTableEnv = TableEnvironment.create(bbSettings)

But when I use the java programming language or the version of scala
in 2.12, there is no problem.

If I use the version of scala2.11, is there any way to solve this
problem? thanks


Best,

Ben

Re:

[Fabian Hueske <fh...@gmail.com>]

Hi,

This is clearly a Scala version issue.
You need to make sure that all Flink dependencies have the same version and
are compiled for Scala 2.11.
The "_2.11" postfix in the dependency name indicates that it is a Scala
2.11 dependency ("_2.12 indicates Scala 2.12 compatibility).

Best, Fabian

Am Mi., 11. Sept. 2019 um 05:53 Uhr schrieb Ben Yan <
yan.xiao.bin.mail@gmail.com>:

> The following is the environment I use：
> 1. flink.version: 1.9.0
> 2. java version "1.8.0_212"
> 3. scala version: 2.11.12
>
> When I wrote the following code in the scala programming language, I found
> the following error：
>
> // set up the batch execution environment
> val bbSettings = EnvironmentSettings.newInstance().useBlinkPlanner().inBatchMode().build()
> val bbTableEnv = TableEnvironment.create(bbSettings)
>
> error: Static methods in interface require -target:jvm-1.8
> [ERROR] val bbTableEnv = TableEnvironment.create(bbSettings)
>
> But when I use the java programming language or the version of scala in 2.12, there is no problem.
>
> If I use the version of scala2.11, is there any way to solve this problem? thanks
>
>
> Best,
>
> Ben
>
>