您如何使Jenkins Poll SCM Schedule中的H实际上是随机的 [英] How do you Make the H in Jenkins Poll SCM Schedule actually random

问题描述

我正在运行Jenkins 1.565.1

I running Jenkins 1.565.1

文档表明H(哈希)函数是项目名称的随机哈希.

The docs indicate the H (hash) function to be a random hash of the project name.

在我看来，这似乎并不正确.我将SCM轮询设置为每4小时

This does not appear to be true in my case. I set SCM polling to be every 4 hours

H H/4 * * *

对于许多项目，它们被安排在

for a number of projects and they get scheduled at

12:00:31
12:00:58
12:00:23
12:00:14

这似乎根本不是随机的！我该如何随机启动它们，并每4个小时检查一次.

This does not appear to be random at all! Ho do I start them at a random time, and check back every 4 hours.

如果我将公式更改为

H H/3 * * *

或

H H * * *

在12:00分钟内，它仍具有相同的开始时间.

It still has the same starting time, within the 12:00 minute.

请注意，此问题仅在SCM轮询中存在，定期构建"中的时间表与所记录的相同.

Note that this problem exists only in SCM polling, the same schedule in "Build Periodically" behaves as documented.

推荐答案

如果您可能不会失去小时的随机性，则可以尝试:

If you don't might losing the randomness on the hours, you could try:

H */4 * * *

对我有用.

我不得不亲自检查文档，因为我只在分钟位置使用了"H"，但是实际上您的语法似乎是合适的. 在线文档提供了以下示例:

I had to check the documentation myself, because I had used "H" only with the minutes position, but it looks like your syntax would be appropriate, actually. The online doc provides the following examples:

# every fifteen minutes (perhaps at :07, :22, :37, :52)
H/15 * * * *
# once a day on the 1st and 15th of every month except December
H H 1,15 1-11 *

也可能是您的工作名称的随机函数在0处四舍五入...您可以尝试重命名工作以查看是否获得更好的结果吗?

It might also be that the random function for your job name turns out to round at 0... Can you try renaming your job and see if you get better results ?

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