GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/11744
[SPARK-12653] Re-enable test "SPARK-8489: MissingRequirementError during
reflection"
## What changes were proposed in this pull request?
The purpose of
[SPARK-12653](https://issues.apache.org/jira/browse/SPARK-12653) is re-enabling
a regression test.
Historically, the target regression test is added by
[SPARK-8498](https://github.com/apache/spark/commit/093c34838d1db7a9375f36a9a2ab5d96a23ae683),
but is temporarily disabled by
[SPARK-12615](https://github.com/apache/spark/commit/8ce645d4eeda203cf5e100c4bdba2d71edd44e6a)
due to binary compatibility error.
The following is the current error message at the submitting spark job with
the pre-built `test.jar` file in the target regression test.
```
Exception in thread "main" java.lang.NoSuchMethodError:
org.apache.spark.SparkContext$.$lessinit$greater$default$6()Lscala/collection/Map;
```
Simple rebuilding `test.jar` can not recover the purpose of testcase since
we need to support both Scala 2.10 and 2.11 for a while. For example, we will
face the following Scala 2.11 error if we use `test.jar` built by Scala 2.10.
```
Exception in thread "main" java.lang.NoSuchMethodError:
scala.reflect.api.JavaUniverse.runtimeMirror(Ljava/lang/ClassLoader;)Lscala/reflect/api/JavaMirrors$JavaMirror;
```
This PR replace the existing `test.jar` with `test-2.10.jar` and
`test-2.11.jar` and improve the regression test to use the suitable jar file.
## How was this patch tested?
Pass the existing Jenkins test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-12653
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11744.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #11744
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