Monthly Archives: January 2019

如何导入另一个 Git库到现有的Git库并保留提交记录 问题描述: 我在本地有两个Git库项目(D1=PC项目 包含通用项目,D2=移动项目 也包含通用项目这两个项目在同一目录下),因为这两个项目使用的通用项目是一样的如数据库访问等 只有显示层(view)不一样而已,因为在之前没有很好的规划而导致出现现在的问题,即如果D1里更改了通用项目的文件 那么D2需要先将D1通用项目的更改先合并过来然后再处理D2项目(防止出现差异导致出现问题),反之也是一样,所以如果通用项目文件经常更新时,我就需要浪费大量的时间在合并这两个Git仓库上 所以要现在要将把这两个库项目合并到一个库里以分支的方式(D1,D2)进行管理(开发PC项目时切换到D1分支,开发移动项目时切换到D2分支) 然后通用项目分别从D1,D2分支迁移出来到新分支Common单独进行管理,然后D1和D2删除通用项目文件 现在我如何将一个库合并到另一个库呢(提交记录必须不能丢失)?经过几天的测试终于解决 需要解决的问题: ... Read More | Share it now!

STORE output to a single CSV?

To set the number of reducers for all Pig opeations, you can use the default_parallelproperty – but this means every single step will use a single reducer, decreasing throughput:set default_parallel 1; Prior to calling STORE, if one of the... Read More | Share it now!

Split by comma and strip whitespace in Python

I would rather end up with whitespace removed like this: I am aware that I could loop through the list and strip() each item but, as this is Python, I’m guessing there’s a quicker, easier and more elegant way of doing it. Use list... Read More | Share it now!

Avro Schema python serialize and deseralize

Seralize and Deseralize avro data with schema ahead import avro.schemafrom avro.datafile import DataFileReader, DataFileWriterfrom import DatumReader, DatumWriter, BinaryDecoder, BinaryEncoderimport ioclass panAvroDataSchem: def dReader... Read More | Share it now!

‘pip install MySQL-python’ fails with ‘IndexError’ on Mac

By finding out the information that mysql-connector-cmight come to the conclusion that the configuration by brew installation may be incorrect , open the /usr/local/bin/mysql_config script to modify some of the contents of it: change... Read More | Share it now!

Python风格规范 分号 Tip 不要在行尾加分号,... Read More | Share it now!


python 中给文件加锁——fcntl模块import fcntl打开一个文件##当前目录下test文件要先存在,如果不存在会报错。或者以写的方式打开f =... Read More | Share it now!

Cannot connect to kafka from remote machine

Worked with from Uncomment And Replace <HOST IP> with actual IP. ... Read More | Share it now!

Java读写avro例子 avro是一个数据序列化框架,可以高效得进行序列化和反序列化,支持C, C++, C#, Java, PHP, Python,... Read More | Share it now!