Thanks for bringing up this discussion Wei. +1 for this proposal! As these options are proposed in 1.10, it will be great if we can improve them in 1.10. Then it will not cause compatible issues.
Thanks, Dian > 在 2019年12月5日，上午10:01，jincheng sun <sunjincheng...@gmail.com> 写道： > > Hi all, > > Thanks for the quick response Aljoscha & Wei ! > > It seems unify the options is necessary, and 1.10 will be code frozen. I > would be like to bring up the VOTE thread for this change ASAP, and more > detail can continue discuss in the PR. > > What do you think? > > Best, > Jincheng > > Aljoscha Krettek <aljos...@apache.org> 于2019年12月4日周三 下午5:11写道： > >> Perfect, thanks for the background info! I also found this section now, >> which mentions that it comes from Hadoop: >> https://spark.apache.org/docs/latest/running-on-yarn.html#important-notes. >> >> I think the proposed changes are good! >> >> Best, >> Aljoscha >> >>> On 4. Dec 2019, at 04:34, Wei Zhong <weizhong0...@gmail.com> wrote: >>> >>> Hi Aljoscha, >>> >>> Thanks for your reply! Before bringing up this discussion I did some >> research on commonly used separators for options that take multiple values. >> I have considered ",", ":" and "#". Finally I chose "#" as the separator of >> "--pyRequirements". >>> >>> For ",", it is the most widely used separator. Many projects use it as >> the separator of the values in same level. e.g. "-Dexcludes" in Maven, >> "--files" in Spark and "-pyFiles" in Flink. But the second parameter of >> "--pyRequirements", the requirement cached directory, is not at the same >> level as its first parameter (the requirements file). It is secondary and >> is only needed when the packages in the requirements file can not be >> downloaded from the package index server. >>> >>> For ":", it is used as a path separator in most cases. e.g. main >> arguments of scp (secure copy), "--volume" in Docker and "-cp" in Java. But >> as we support accept a URI as the file path, which contains ":" in most >> cases, ":" can not be used as the separator of "--pyRequirements". >>> >>> For "#", it is really rarely used as a separator for multiple values. I >> only find Spark using "#" as the separator for option "--files" and >> "--archives" between file path and target file/directory name. After some >> research I find that this usage comes from the URI fragment. We can append >> a secondary resource as the fragment of the URI after a number sign ("#") >> character. As we treat user file paths as URIs when parsing command line, >> using "#" as the separator of "--pyRequirements" makes sense to me, which >> means the second parameter is the fragment of the first parameter. The >> definition of URI fragment can be found here [1]. >>> >>> The reason of using "#" in "--pyArchives" as the separator of file path >> and targer directory name is the same as above. >>> >>> Best, >>> Wei >>> >>> [1] https://tools.ietf.org/html/rfc3986#section-3.5 >>> >>>> 在 2019年12月3日，22:02，Aljoscha Krettek <aljos...@apache.org> 写道： >>>> >>>> Hi, >>>> >>>> Yes, I think it’s a good idea to make the options uniform. Using ‘#’ as >> a separator for options that take two values seems a bit strange to me, did >> you research if any other CLI tools have this convention? >>>> >>>> Side note: I don’t like that our options use camel-case, I think that’s >> very non-standard. But that’s how it is now… >>>> >>>> Best, >>>> Aljoscha >>>> >>>>> On 3. Dec 2019, at 10:14, jincheng sun <sunjincheng...@gmail.com> >> wrote: >>>>> >>>>> Thanks for bringup this discussion Wei! >>>>> I think this is very important for Flink User, we should contains this >>>>> changes in Flink 1.10. >>>>> +1 for the optimization from the perspective of user convenience and >> the >>>>> unified use of Flink command line parameters. >>>>> >>>>> Best, >>>>> Jincheng >>>>> >>>>> Wei Zhong <weizhong0...@gmail.com> 于2019年12月2日周一 下午3:26写道： >>>>> >>>>>> Hi everyone, >>>>>> >>>>>> I wanted to bring up the discussion of improving the Pyflink command >> line >>>>>> options. >>>>>> >>>>>> A few command line options have been introduced in the FLIP-78 [1], >> i.e. >>>>>> "python-executable-path", "python-requirements","python-archive", etc. >>>>>> There are a few problems with these options, i.e. the naming style, >>>>>> variable argument options, etc. >>>>>> >>>>>> We want to make some adjustment of FLIP-78 to improve the newly >> introduced >>>>>> command line options, here is the design doc: >>>>>> >>>>>> >> https://docs.google.com/document/d/1R8CaDa3908V1SnTxBkTBzeisWqBF40NAYYjfRl680eg/edit?usp=sharing >>>>>> < >>>>>> >> https://docs.google.com/document/d/1R8CaDa3908V1SnTxBkTBzeisWqBF40NAYYjfRl680eg/edit?usp=sharing >>>>>>> >>>>>> Looking forward to your feedback! >>>>>> >>>>>> Best, >>>>>> Wei >>>>>> >>>>>> [1] >>>>>> >> https://cwiki.apache.org/confluence/display/FLINK/FLIP-78%3A+Flink+Python+UDF+Environment+and+Dependency+Management >>>>>> < >>>>>> >> https://cwiki.apache.org/confluence/display/FLINK/FLIP-78:+Flink+Python+UDF+Environment+and+Dependency+Management >>>>>>> >>>>>> >>>>>> >>>> >>> >> >>
