(no subject)

[Ben Yan]

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

[Fabian Hueske-2]

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 <[hidden email]>:

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