Jenkins Gerrit 轮询失败：不断触发构建

Question

因此，我们在 Jenkins CI 构建管理器上使用 Gerrit Trigger (2.21.1)，并使用 docker 容器进行实际构建。

我们的某些分支机构最近出现的问题是 Gerrit Repo 轮询失败并导致其每次都“检测到更改”，因此尽管没有更改，它仍会不断重建。

检查任何受影响作业的 Gerrit Repo 轮询日志将得到以下两种输出之一：

Gerrit Repo Polling Log

Started on Dec 20, 2016 11:31:01 AM

似乎永远填不进去，或者：

Started on Dec 20, 2016 12:27:01 PM
Polling SCM changes on aosp-host
[workspace] $ repo init -u http://xxx.xxx.xxx.xxx/git/project/platform/manifest.git -b branch -m branch.xml
Get https://gerrit.googlesource.com/git-repo/clone.bundle
Get https://gerrit.googlesource.com/git-repo
fatal: Not a git repository: '/home/jenkins/workspace/.repo/manifests.git'
fatal: Not a git repository: '/home/jenkins/workspace/.repo/manifests.git'
fatal: cannot obtain manifest http://xxx.xxx.xxx.xxx/git/project/platform/manifest.git
Done. Took 1 min 19 sec
Changes found

由此故障触发的构建使用相同的命令并且运行良好：

[workspace] $ repo init -u http://xxx.xxx.xxx.xxx/git/project/platform/manifest.git -b branch -m branch.xml

导航到清单目录，我们看到了症状：

jenkins@f052b3453d95:~/workspace/.repo$ ll 
total 32 
drwxr-xr-x 1 jenkins jenkins   180 Dec 20 11:08 ./ 
drwxrwxr-x 1 jenkins jenkins   778 Dec 20 11:07 ../
-rw-r--r-- 1 jenkins jenkins 20087 Dec 20 10:14 .repo_fetchtimes.json 
lrwxrwxrwx 1 jenkins jenkins    20 Dec 20 10:13 manifest.xml -> manifests/company.xml 
drwxr-xr-x 1 jenkins jenkins     8 Dec 16 17:33 manifests/ 
drwxr-xr-x 1 jenkins jenkins    50 Dec 16 17:33 manifests.git/ 
drwxr-xr-x 1 jenkins jenkins    28 Dec 16 17:43 project-objects/
-rw-r--r-- 1 jenkins jenkins  7756 Dec 20 10:14 project.list 
drwxr-xr-x 1 jenkins jenkins   410 Dec 16 17:46 projects/

和

lrwxrwxrwx 1 jenkins jenkins    20 Dec 20 10:13 manifest.xml -> manifests/company.xml

以红色突出显示，因为未找到关联的company.xml...因此上面的 Gerrit Log 是准确的，但它无法init正确运行。这可以通过repo status主目录中的以下内容确认：

jenkins@f052b3453d95:~/workspace$ repo status
Traceback (most recent call last):
  File "/home/jenkins/workspace/.repo/repo/main.py", line 531, in <module>
    _Main(sys.argv[1:])
  File "/home/jenkins/workspace/.repo/repo/main.py", line 507, in _Main
    result = repo._Run(argv) or 0
  File "/home/jenkins/workspace/.repo/repo/main.py", line 180, in _Run
    result = cmd.Execute(copts, cargs)
  File "/home/jenkins/workspace/.repo/repo/subcmds/status.py", line 130, in Execute
    all_projects = self.GetProjects(args)
  File "/home/jenkins/workspace/.repo/repo/command.py", line 140, in GetProjects
    all_projects_list = manifest.projects
  File "/home/jenkins/workspace/.repo/repo/manifest_xml.py", line 350, in projects
    self._Load()
  File "/home/jenkins/workspace/.repo/repo/manifest_xml.py", line 407, in _Load
    self.manifestProject.worktree))
  File "/home/jenkins/workspace/.repo/repo/manifest_xml.py", line 443, in _ParseManifestXml
    root = xml.dom.minidom.parse(path)
  File "/usr/lib/python2.7/xml/dom/minidom.py", line 1918, in parse
    return expatbuilder.parse(file)
  File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 922, in parse
    fp = open(file, 'rb')
IOError: [Errno 2] No such file or directory: '/home/jenkins/workspace/.repo/manifest.xml'

问题是，repo init -u <url> -m company.xml通过命令行运行正常，并生成有效的 repo。

有人能针对这个问题提供什么见解吗？