Patrick Wendell created SPARK-7726:
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Summary: Maven Install Breaks When Upgrading Scala
2.11.2-->[2.11.3 or higher]
Key: SPARK-7726
URL: https://issues.apache.org/jira/browse/SPARK-7726
Project: Spark
Issue Type: Bug
Components: Build
Reporter: Patrick Wendell
Priority: Blocker
This one took a long time to track down. The Maven install phase is part of our
release process. It runs the "scala:doc" target to generate doc jars. Between
Scala 2.11.2 and Scala 2.11.3, the behavior of this plugin changed in a way
that breaks our build. In both cases, it returned an error (there has been a
long running error here that we've always ignored), however in 2.11.3 that
error became fatal and failed the entire build process. The upgrade occurred in
SPARK-7092. Here is a simple reproduction:
{code}
./dev/change-version-to-2.11.sh
mvn clean install -pl network/common -pl network/shuffle -DskipTests
-Dscala-2.11
{code}
This command exits success when Spark is at Scala 2.11.2 and fails with 2.11.3
or higher. In either case an error is printed:
{code}
[INFO]
[INFO] --- scala-maven-plugin:3.2.0:doc-jar (attach-scaladocs) @
spark-network-shuffle_2.11 ---
/Users/pwendell/Documents/spark/network/shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/UploadBlock.java:56:
error: not found: type Type
protected Type type() { return Type.UPLOAD_BLOCK; }
^
/Users/pwendell/Documents/spark/network/shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/StreamHandle.java:37:
error: not found: type Type
protected Type type() { return Type.STREAM_HANDLE; }
^
/Users/pwendell/Documents/spark/network/shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/RegisterExecutor.java:44:
error: not found: type Type
protected Type type() { return Type.REGISTER_EXECUTOR; }
^
/Users/pwendell/Documents/spark/network/shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/OpenBlocks.java:40:
error: not found: type Type
protected Type type() { return Type.OPEN_BLOCKS; }
^
model contains 22 documentable templates
four errors found
{code}
Ideally we'd just dig in and fix this error. Unfortunately it's a very
confusing error and I have no idea why it is appearing. I'd propose reverting
SPARK-7092 in the mean time.
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