今天看了一下Brian Harry大叔的博客,才发现2016年3月17日,是Team Foundation Server的10岁生日. Today marks the 10th anniversary of the day we shipped the first version of TFS – TFS 2005. It doesn’t seem that long ago but we sure have come a long way. The other day I recorded a…
In this tutorial I will describe how to write a simple MapReduce program for Hadoop in the Python programming language. Motivation Even though the Hadoop framework is written in Java, programs for Hadoop need not to be coded in Java but can also be d…
Hive执行count函数失败 1.现象: 0: jdbc:hive2://192.168.137.12:10000> select count(*) from emp; INFO : Number of reduce tasks determined at compile time: 1 INFO : In order to change the average load for a reducer (in bytes): INFO : set hive.exec.reducers.bytes…