[jira] [Created] (FLINK-7032) Intellij is constantly changing language level of sub projects back to 1.6

[Shang Yuanchun (Jira)]

Piotr Nowojski created FLINK-7032:
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             Summary: Intellij is constantly changing language level of sub projects back to 1.6
                 Key: FLINK-7032
                 URL: https://issues.apache.org/jira/browse/FLINK-7032
             Project: Flink
          Issue Type: Improvement
            Reporter: Piotr Nowojski
            Assignee: Piotr Nowojski


Every time I do maven reimport projects, Intellij is switching back to 1.6 language level. I tracked down this issue to misconfiguration in our pom.xml file. It correctly configure maven-compiler-plugin:

{code:xml}

                        <plugin>
                                <!-- just define the Java version to be used for compiling and plugins -->
                                <groupId>org.apache.maven.plugins</groupId>
                                <artifactId>maven-compiler-plugin</artifactId>
                                <version>3.1</version><!--$NO-MVN-MAN-VER$-->
                                <configuration>
                                        <source>${java.version}</source>
                                        <target>${java.version}</target>
                                        <!-- The output of Xlint is not shown by default, but we activate it for the QA bot
                                        to be able to get more warnings -->
                                        <compilerArgument>-Xlint:all</compilerArgument>
                                </configuration>
                        </plugin>
{code}

where ${java.version} is set to 1.7 in the properties, but it forgets to overwrite the following properties from apache-18.pom:

{code:xml}
  <properties>
    <maven.compiler.source>1.6</maven.compiler.source>
    <maven.compiler.target>1.6</maven.compiler.target>
  </properties>
{code}

It seems like compiling from console using maven ignores those values, but they are confusing Intellij.



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