Scala 2.11 compilation for the Apache Bahir Library

Question

Not sure if this is the right place to post this question. (Apologies if it isn't. And if so, please point me in the right direction.)

I am attempting to compile Apache Bahir to generate scala 2.11 artifacts (as mvn clean install -P scala-2.11 -Dscala-2.11 -DskipTests). When attempting do so, I am running into the following build issues:

[INFO] Reactor Summary for Apache Bahir - Parent POM 3.0.0-SNAPSHOT:
[INFO]
[INFO] Apache Bahir - Parent POM .......................... SUCCESS [ 4.166 s]
[INFO] Apache Bahir - Common .............................. SUCCESS [ 20.276 s]
[INFO] Apache Bahir - Spark SQL Cloudant DataSource ....... FAILURE [ 0.147 s]
[INFO] Apache Bahir - Spark SQL Streaming Akka ............ SKIPPED
[INFO] Apache Bahir - Spark SQL Streaming MQTT ............ SKIPPED
[INFO] Apache Bahir - Spark SQL Streaming JDBC ............ SKIPPED
[INFO] Apache Bahir - Spark SQL Streaming SQS ............. SKIPPED
[INFO] Apache Bahir - Spark Streaming Akka ................ SKIPPED
[INFO] Apache Bahir - Spark Streaming MQTT ................ SKIPPED
[INFO] Apache Bahir - Spark Streaming PubNub .............. SKIPPED
[INFO] Apache Bahir - Spark Streaming Google PubSub ....... SKIPPED
[INFO] Apache Bahir - Spark Streaming Twitter ............. SKIPPED
[INFO] Apache Bahir - Spark Streaming ZeroMQ .............. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 24.877 s
[INFO] Finished at: 2020-10-07T18:42:46-07:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project spark-sql-cloudant_2.12: Could not resolve
 dependencies for project org.apache.bahir:spark-sql-cloudant_2.12:jar:3.0.0-SNAPSHOT: 
The following artifacts could not be resolved: org.apache.bahir:bahir-common_2.11:jar:3.0.0-
SNAPSHOT, org.apache.bahir:bahir-common_2.11:jar:tests:3.0.0-SNAPSHOT: Failure to find 
org.apache.bahir:bahir-common_2.11:jar:3.0.0-SNAPSHOT in https://repository.apache.org/snapshots
 was cached in the local repository, resolution will not be reattempted until the update 
interval of apache.snapshots has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the 
following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <args> -rf :spark-sql-cloudant_2.12

Upon examining the common/target directory, I see that although there is a scala-2.11 sub-directory with compiled class files in there, I don't see the appropriate bahir-common_2.11-3.0.0-SNAPSHOT*.jar files being generated (while the bahir-common_2.12-3.0.0-SNAPSHOT*.jar seem to be generated just fine).

I was wondering if anyone here could potentially help with this. Thanks in advance!

Answer 1

I suppose this is one way to do it(?):

$ cd <project_root_dir>
$ ./dev/change-scala-version.sh 2.11
$ mvn clean package -Pscala-2.11 -Dscala-2.11 -DskipTest

PS: If anyone has an authoritative answer to this, please chime in. Thanks!