我怎样才能只编译Spark核心和Spark流(这样我就可以得到流的单元测试工具)？

Question

我目前正在开发一个Spark Streaming应用程序，并尝试编写我的第一个单元测试。我在这个应用程序中使用了Java，我还需要使用Java（和JUnit）编写单元测试。

我找不到任何专注于Spark流单元测试的文档，我只能在Spark流源代码中找到基于Java的单元测试:

https://github.com/apache/spark/blob/branch-1.1/streaming/src/test/java/org/apache/spark/streaming/JavaAPISuite.java

这取决于Scala文件：

https://github.com/apache/spark/blob/branch-1.1/streaming/src/test/java/org/apache/spark/streaming/JavaTestUtils.scala

这反过来又取决于中的Scala测试文件

https://github . com/Apache/spark/tree/branch-1.1/串流/src/test/Scala/org/Apache/spark/串流

所以我想我可以获取Spark源代码，切换到分支-1.1分支，然后只编译“核心”和“流”模块，希望最终得到Streaming测试实用程序的编译类（或jar文件），这样我就可以将它们导入基于Java的Spark Streaming应用程序中。

但是，尝试通过以下命令行生成它失败：

mvn -pl core,streaming package

您可以在该消息的末尾看到完整的输出。

任何想法如何进步？

构建的完整输出：

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] ------------------------------------------------------------------------
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[INFO] 
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[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 ---
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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
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[INFO] 
[INFO] --- maven-antrun-plugin:1.7:run (default) @ spark-core_2.10 ---
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[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)
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[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 ---
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[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

Answer 1

你可以这样试试:

独立编译Spark核心：

build/mvn --项目核心/ -帕德oop-2.3 -Dskip测试安装

独立包装：

mvn--project汇编/-Phadopop-2.3-DskipTest安装

有关更多详细信息，请参阅：http://ericsahit-blog.logdown.com/posts/278104-spark-compilation

Answer 2

以下Maven命令行解决了此问题：

mvn -pl core,streaming package -DskipTests

它生成了一个包含测试的单独JAR文件，在将该JAR添加到本地缓存后，我能够导入相关的实用程序类进行单元测试。