我有一个项目是从另一个小组开发的，并使用旧版本的 Giraph。
该项目是基于 Giraph 项目本身制作的；项目结构和文件与 Giraph 完全相同，只是在 giraph-examples 中定义了一些用于更复杂的 map-reduce 图操作的 .java 源。由于该项目是 Giraph 项目的扩展，因此使用 Maven 编译和打包该项目，这也是 Giraph 项目的构建工具。
我找不到这个项目究竟基于什么版本的 Giraph，但我可以发现编译这个项目需要 0.2-SNAPSHOP 的 giraph-parent，而且它已经很老了。
当前的问题是我尝试 mvn verify 时出错；屏幕上打印的 mvn 消息如下：
[INFO] Scanning for projects...
[INFO] -------------------------------------------------------------------------
[INFO] Reactor Build Order :
[INFO]
[INFO] Apache Giraph Parent
[INFO] Apache Giraph Core
[INFO] Apache Giraph Hive I/O
[INFO] Apache Giraph Examples
[INFO] Apache Giraph Accumulo I/O
[INFO] Apache Giraph HBase I/O
[INFO] Apache Giraph HCaatalog I/O
[INFO]
[INFO] -------------------------------------------------------------------------
[INFO] Building apache Giraph Parent 0.2-SNAPSHOP
[INFO] -------------------------------------------------------------------------
[INFO]
[INFO] --- mavanagaiata:0.4.1:branch (git-commit) @ giraph-parent ---
[INFO] -------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] Apache Giraph Parent .................................... FAILURE [0.579s]
[INFO] Apache Giraph Core ...................................... SKIPPED
[INFO] Apache Giraph Hive I/O .................................. SKIPPED
[INFO] Apache Giraph Examples .................................. SKIPPED
[INFO] Apache Giraph Accumulo I/O .............................. SKIPPED
[INFO] Apache Giraph HBase I/O ................................. SKIPPED
[INFO] Apache Giraph HCatalog I/O .............................. SKIPPED
[INFO] -------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] -------------------------------------------------------------------------
[INFO] Total time: 1.485s
[INFO] Finished at: Fri May 30 12.49.32 KST 2014
[INFO] Final Memory: 5M/15M
[INFO] -------------------------------------------------------------------------
[ERROR] Failed to execute goal com.github.koraktor:mavanagaiata:0.4.1:branch (git-commit) on project giraph-parent: Unable to initialize Mojo: the gitDir /home/hduser/subgraphlisting/.git does not exist -> [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/MojoExecutionException
我也可以在同一环境中使用 Maven 成功编译/打包最近的 Giraph（来自官方主页）。错误消息说我的项目文件夹中没有 .git 文件夹，但只有 .svn 文件夹。有人能准确地找出这个错误的原因吗？
谢谢