Hello, I'm currently developing a Spark Streaming application and trying to write my first unit test. I've used Java for this application, and I also need use Java (and JUnit) for writing unit tests.
I could not find any documentation that focuses on Spark Streaming unit testing, all I could find was the Java based unit tests in Spark Streaming source code: https://github.com/apache/spark/blob/branch-1.1/streaming/src/test/java/org/apache/spark/streaming/JavaAPISuite.java <https://webmail.cronos.be/owa/redir.aspx?C=Jqwj6T-dSk63ezaf0lH8P7NV7ZXa4NEIco3EZ9VQhfNEvS3bxfKu6ZKfDqYOFlFaCAvyOEVymdw.&URL=https%3a%2f%2fgithub.com%2fapache%2fspark%2fblob%2fbranch-1.1%2fstreaming%2fsrc%2ftest%2fjava%2forg%2fapache%2fspark%2fstreaming%2fJavaAPISuite.java> that depends on a Scala file: https://github.com/apache/spark/blob/branch-1.1/streaming/src/test/java/org/apache/spark/streaming/JavaTestUtils.scala <https://webmail.cronos.be/owa/redir.aspx?C=Jqwj6T-dSk63ezaf0lH8P7NV7ZXa4NEIco3EZ9VQhfNEvS3bxfKu6ZKfDqYOFlFaCAvyOEVymdw.&URL=https%3a%2f%2fgithub.com%2fapache%2fspark%2fblob%2fbranch-1.1%2fstreaming%2fsrc%2ftest%2fjava%2forg%2fapache%2fspark%2fstreaming%2fJavaTestUtils.scala> which, in turn, depends on the Scala test files in https://github.com/apache/spark/tree/branch-1.1/streaming/src/test/scala/org/apache/spark/streaming <https://webmail.cronos.be/owa/redir.aspx?C=Jqwj6T-dSk63ezaf0lH8P7NV7ZXa4NEIco3EZ9VQhfNEvS3bxfKu6ZKfDqYOFlFaCAvyOEVymdw.&URL=https%3a%2f%2fgithub.com%2fapache%2fspark%2ftree%2fbranch-1.1%2fstreaming%2fsrc%2ftest%2fscala%2forg%2fapache%2fspark%2fstreaming> So I thought that I could grab the Spark source code, switch to branch-1.1 branch and then only compile 'core' and 'streaming' modules, hopefully ending up with the compiled classes (or jar files) of the Streaming test utilities, so that I can import them in my Java based Spark Streaming application. However, trying to build it via the following command line failed: mvn -pl core,streaming package You can see the full output at the end of this message. Any ideas how to progress? Full output of the build: emre@emre-ubuntu:~/code/spark$ mvn -pl core,streaming package [INFO] Scanning for projects... [INFO] ------------------------------------------------------------------------ [INFO] Reactor Build Order: [INFO] [INFO] Spark Project Core [INFO] Spark Project Streaming [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building Spark Project Core 1.1.2-SNAPSHOT [INFO] ------------------------------------------------------------------------ Downloading: https://repo1.maven.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.7/maven-antrun-plugin-1.7.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.7/maven-antrun-plugin-1.7.pom (5 KB at 5.8 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.7/maven-antrun-plugin-1.7.jar Downloaded: https://repo1.maven.org/maven2/org/apache/maven/plugins/maven-antrun-plugin/1.7/maven-antrun-plugin-1.7.jar (31 KB at 200.4 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/commons/commons-math3/3.3/commons-math3-3.3.pom Downloaded: https://repo1.maven.org/maven2/org/apache/commons/commons-math3/3.3/commons-math3-3.3.pom (24 KB at 178.9 KB/sec) Downloading: https://repo1.maven.org/maven2/org/spark-project/akka/akka-testkit_2.10/2.2.3-shaded-protobuf/akka-testkit_2.10-2.2.3-shaded-protobuf.pom Downloaded: https://repo1.maven.org/maven2/org/spark-project/akka/akka-testkit_2.10/2.2.3-shaded-protobuf/akka-testkit_2.10-2.2.3-shaded-protobuf.pom (3 KB at 22.5 KB/sec) Downloading: https://repo1.maven.org/maven2/org/scala-lang/scalap/2.10.4/scalap-2.10.4.pom Downloaded: https://repo1.maven.org/maven2/org/scala-lang/scalap/2.10.4/scalap-2.10.4.pom (2 KB at 19.2 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/derby/derby/10.4.2.0/derby-10.4.2.0.pom Downloaded: https://repo1.maven.org/maven2/org/apache/derby/derby/10.4.2.0/derby-10.4.2.0.pom (2 KB at 14.9 KB/sec) Downloading: 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https://repo1.maven.org/maven2/cglib/cglib-nodep/2.2.2/cglib-nodep-2.2.2.pom (2 KB at 9.9 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/commons/commons-math3/3.3/commons-math3-3.3.jar Downloading: https://repo1.maven.org/maven2/org/spark-project/akka/akka-testkit_2.10/2.2.3-shaded-protobuf/akka-testkit_2.10-2.2.3-shaded-protobuf.jar Downloading: https://repo1.maven.org/maven2/org/scala-lang/scalap/2.10.4/scalap-2.10.4.jar Downloading: https://repo1.maven.org/maven2/org/apache/derby/derby/10.4.2.0/derby-10.4.2.0.jar Downloading: https://repo1.maven.org/maven2/org/mockito/mockito-all/1.9.0/mockito-all-1.9.0.jar Downloaded: https://repo1.maven.org/maven2/org/scala-lang/scalap/2.10.4/scalap-2.10.4.jar (834 KB at 146.7 KB/sec) Downloading: https://repo1.maven.org/maven2/org/easymock/easymockclassextension/3.1/easymockclassextension-3.1.jar Downloaded: https://repo1.maven.org/maven2/org/easymock/easymockclassextension/3.1/easymockclassextension-3.1.jar (11 KB at 65.8 KB/sec) Downloading: https://repo1.maven.org/maven2/org/easymock/easymock/3.1/easymock-3.1.jar Downloaded: https://repo1.maven.org/maven2/org/easymock/easymock/3.1/easymock-3.1.jar (110 KB at 125.5 KB/sec) Downloading: https://repo1.maven.org/maven2/cglib/cglib-nodep/2.2.2/cglib-nodep-2.2.2.jar Downloaded: https://repo1.maven.org/maven2/cglib/cglib-nodep/2.2.2/cglib-nodep-2.2.2.jar (320 KB at 205.4 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/spark-project/akka/akka-testkit_2.10/2.2.3-shaded-protobuf/akka-testkit_2.10-2.2.3-shaded-protobuf.jar (233 KB at 23.9 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/apache/commons/commons-math3/3.3/commons-math3-3.3.jar (1907 KB at 192.1 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/mockito/mockito-all/1.9.0/mockito-all-1.9.0.jar (1461 KB at 113.2 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/apache/derby/derby/10.4.2.0/derby-10.4.2.0.jar (2390 KB at 131.1 KB/sec) [INFO] [INFO] --- maven-enforcer-plugin:1.3.1:enforce (enforce-versions) @ spark-core_2.10 --- Downloading: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-api/1.3.1/enforcer-api-1.3.1.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-api/1.3.1/enforcer-api-1.3.1.pom (3 KB at 34.0 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-rules/1.3.1/enforcer-rules-1.3.1.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-rules/1.3.1/enforcer-rules-1.3.1.pom (4 KB at 66.6 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-api/1.3.1/enforcer-api-1.3.1.jar Downloading: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-rules/1.3.1/enforcer-rules-1.3.1.jar Downloaded: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-api/1.3.1/enforcer-api-1.3.1.jar (10 KB at 75.7 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/apache/maven/enforcer/enforcer-rules/1.3.1/enforcer-rules-1.3.1.jar (86 KB at 292.3 KB/sec) [INFO] [INFO] --- build-helper-maven-plugin:1.8:add-source (add-scala-sources) @ spark-core_2.10 --- [INFO] Source directory: /home/emre/code/spark/core/src/main/scala added. [INFO] [INFO] --- maven-remote-resources-plugin:1.5:process (default) @ spark-core_2.10 --- Downloading: https://repo1.maven.org/maven2/org/apache/maven/shared/maven-artifact-resolver/1.0/maven-artifact-resolver-1.0.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/shared/maven-artifact-resolver/1.0/maven-artifact-resolver-1.0.pom (6 KB at 65.8 KB/sec) Downloading: https://repo1.maven.org/maven2/org/codehaus/plexus/plexus-resources/1.0-alpha-7/plexus-resources-1.0-alpha-7.pom Downloaded: https://repo1.maven.org/maven2/org/codehaus/plexus/plexus-resources/1.0-alpha-7/plexus-resources-1.0-alpha-7.pom (2 KB at 21.4 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/velocity/velocity/1.7/velocity-1.7.pom Downloaded: https://repo1.maven.org/maven2/org/apache/velocity/velocity/1.7/velocity-1.7.pom (11 KB at 143.3 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/shared/maven-artifact-resolver/1.0/maven-artifact-resolver-1.0.jar Downloading: https://repo1.maven.org/maven2/org/codehaus/plexus/plexus-interpolation/1.12/plexus-interpolation-1.12.jar Downloading: https://repo1.maven.org/maven2/org/codehaus/plexus/plexus-resources/1.0-alpha-7/plexus-resources-1.0-alpha-7.jar Downloading: https://repo1.maven.org/maven2/org/codehaus/plexus/plexus-utils/1.5.15/plexus-utils-1.5.15.jar Downloading: https://repo1.maven.org/maven2/org/apache/velocity/velocity/1.7/velocity-1.7.jar Dec 05, 2014 12:30:22 PM org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute INFO: I/O exception (org.apache.maven.wagon.providers.http.httpclient.NoHttpResponseException) caught when processing request: The target server failed to respond Dec 05, 2014 12:30:22 PM org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute INFO: Retrying request Downloaded: https://repo1.maven.org/maven2/org/codehaus/plexus/plexus-resources/1.0-alpha-7/plexus-resources-1.0-alpha-7.jar (23 KB at 45.6 KB/sec) Downloaded: 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Downloaded: https://repo1.maven.org/maven2/org/apache/ant/ant/1.8.2/ant-1.8.2.jar (1889 KB at 416.0 KB/sec) [WARNING] Parameter tasks is deprecated, use target instead [INFO] Executing tasks main: [unzip] Expanding: /home/emre/code/spark/python/lib/py4j-0.8.2.1-src.zip into /home/emre/code/spark/python/build [INFO] Executed tasks [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ spark-core_2.10 --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 9 resources [INFO] Copying 21 resources [INFO] Copying 7 resources [INFO] Copying 3 resources [INFO] [INFO] --- scala-maven-plugin:3.2.0:compile (scala-compile-first) @ spark-core_2.10 --- [WARNING] Zinc server is not available at port 3030 - reverting to normal incremental compile [INFO] Using incremental compilation [INFO] 'compiler-interface' not yet compiled for Scala 2.10.4. Compiling... [INFO] Compilation completed in 10.873 s [INFO] compiler plugin: BasicArtifact(org.scalamacros,paradise_2.10.4,2.0.1,null) Downloading: https://repo1.maven.org/maven2/org/scalamacros/paradise_2.10.4/2.0.1/paradise_2.10.4-2.0.1.jar Downloaded: https://repo1.maven.org/maven2/org/scalamacros/paradise_2.10.4/2.0.1/paradise_2.10.4-2.0.1.jar (1855 KB at 485.7 KB/sec) [INFO] Compiling 390 Scala sources and 28 Java sources to /home/emre/code/spark/core/target/scala-2.10/classes... [WARNING] warning: [options] bootstrap class path not set in conjunction with -source 1.6 [WARNING] 1 warning [INFO] [INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ spark-core_2.10 --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 28 source files to /home/emre/code/spark/core/target/scala-2.10/classes [INFO] [INFO] --- build-helper-maven-plugin:1.8:add-test-source (add-scala-test-sources) @ spark-core_2.10 --- [INFO] Test Source directory: /home/emre/code/spark/core/src/test/scala added. [INFO] [INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ spark-core_2.10 --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] Copying 4 resources [INFO] Copying 3 resources [INFO] [INFO] --- scala-maven-plugin:3.2.0:testCompile (scala-test-compile-first) @ spark-core_2.10 --- [WARNING] Zinc server is not available at port 3030 - reverting to normal incremental compile [INFO] Using incremental compilation [INFO] compiler plugin: BasicArtifact(org.scalamacros,paradise_2.10.4,2.0.1,null) [INFO] Compiling 111 Scala sources and 3 Java sources to /home/emre/code/spark/core/target/scala-2.10/test-classes... [WARNING] warning: [options] bootstrap class path not set in conjunction with -source 1.6 [WARNING] Note: /home/emre/code/spark/core/src/test/java/org/apache/spark/JavaAPISuite.java uses unchecked or unsafe operations. [WARNING] Note: Recompile with -Xlint:unchecked for details. [WARNING] 1 warning [INFO] [INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ spark-core_2.10 --- [INFO] Changes detected - recompiling the module! [INFO] Compiling 3 source files to /home/emre/code/spark/core/target/scala-2.10/test-classes [INFO] [INFO] --- maven-surefire-plugin:2.17:test (default-test) @ spark-core_2.10 --- Downloading: https://repo1.maven.org/maven2/org/apache/maven/surefire/maven-surefire-common/2.17/maven-surefire-common-2.17.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/surefire/maven-surefire-common/2.17/maven-surefire-common-2.17.pom (6 KB at 14.4 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-api/2.17/surefire-api-2.17.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-api/2.17/surefire-api-2.17.pom (3 KB at 13.3 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-booter/2.17/surefire-booter-2.17.pom Downloaded: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-booter/2.17/surefire-booter-2.17.pom (3 KB at 40.1 KB/sec) Downloading: https://repo1.maven.org/maven2/org/apache/maven/surefire/maven-surefire-common/2.17/maven-surefire-common-2.17.jar Downloading: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-booter/2.17/surefire-booter-2.17.jar Downloading: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-api/2.17/surefire-api-2.17.jar Downloaded: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-booter/2.17/surefire-booter-2.17.jar (39 KB at 184.9 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/apache/maven/surefire/surefire-api/2.17/surefire-api-2.17.jar (144 KB at 141.3 KB/sec) Downloaded: https://repo1.maven.org/maven2/org/apache/maven/surefire/maven-surefire-common/2.17/maven-surefire-common-2.17.jar (260 KB at 166.2 KB/sec) [INFO] Tests are skipped. [INFO] [INFO] --- scalatest-maven-plugin:1.0-RC2:test (test) @ spark-core_2.10 --- Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0 Discovery starting. Discovery completed in 7 seconds, 167 milliseconds. Run starting. Expected test count is: 809 ExternalSorterSuite: - empty data stream - few elements per partition - empty partitions with spilling - empty partitions with spilling, bypass merge-sort ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory - spilling in local cluster *** FAILED *** org.apache.spark.SparkException: Job aborted due to stage failure: Master removed our application: FAILED at org.apache.spark.scheduler.DAGScheduler.org $apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1185) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1174) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1173) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1173) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:688) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:688) at scala.Option.foreach(Option.scala:236) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:688) ... ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory - spilling in local cluster with many reduce tasks *** FAILED *** org.apache.spark.SparkException: Job aborted due to stage failure: Master removed our application: FAILED at org.apache.spark.scheduler.DAGScheduler.org $apache$spark$scheduler$DAGScheduler$$failJobAndIndependentStages(DAGScheduler.scala:1185) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1174) at org.apache.spark.scheduler.DAGScheduler$$anonfun$abortStage$1.apply(DAGScheduler.scala:1173) at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59) at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47) at org.apache.spark.scheduler.DAGScheduler.abortStage(DAGScheduler.scala:1173) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:688) at org.apache.spark.scheduler.DAGScheduler$$anonfun$handleTaskSetFailed$1.apply(DAGScheduler.scala:688) at scala.Option.foreach(Option.scala:236) at org.apache.spark.scheduler.DAGScheduler.handleTaskSetFailed(DAGScheduler.scala:688) ... ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory - cleanup of intermediate files in sorter - cleanup of intermediate files in sorter, bypass merge-sort - cleanup of intermediate files in sorter if there are errors - cleanup of intermediate files in sorter if there are errors, bypass merge-sort - cleanup of intermediate files in shuffle - cleanup of intermediate files in shuffle with errors - no partial aggregation or sorting - partial aggregation without spill - partial aggregation with spill, no ordering - partial aggregation with spill, with ordering - sorting without aggregation, no spill - sorting without aggregation, with spill ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory ls: cannot access /home/emre/code/spark/assembly/target/scala-2.10: No such file or directory [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] Spark Project Core ................................. FAILURE [03:36 min] [INFO] Spark Project Streaming ............................ SKIPPED [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 03:37 min [INFO] Finished at: 2014-12-05T12:33:36+01:00 [INFO] Final Memory: 37M/597M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.scalatest:scalatest-maven-plugin:1.0-RC2:test (test) on project spark-core_2.10: There are test failures -> [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/MojoFailureException -- Emre Sevinç
