Apache的hadoop版本2.0与0.23 [英] apache hadoop versions 2.0 vs. 0.23

问题描述

有很多Hadoop版本和不同的发行版让我感到困惑。我有几个问题。

1. Apache Hadoop 1.x从0.20.205开始


2. Apache Hadoop 2.0是从0.22还是0.23？

解决方案

据此 blogpost 来自Cloudera：

0.20.205和1.0之间几乎没有功能差异。
这只是一个重新编号。

Hadoop的 Yarn 网站声明：

MapReduce已经在hadoop-0.23中进行了彻底的改革，现在我们有
，MapReduce 2.0（MRv2）或YARN。

同样值得看看这个也>图。它显示了不同Hadoop版本的树以及其上的第三方分发版。

There are so many Hadoop versions and different distributions which make me confused. I have a few questions.

1. Apache Hadoop 1.x is from 0.20.205?
2. Apache Hadoop 2.0 is from 0.22 or 0.23?

解决方案

According to this blogpost from Cloudera:

There is next to no functional difference between 0.20.205 and 1.0. This is just a renumbering.

Hadoop's Yarn site states:

MapReduce has undergone a complete overhaul in hadoop-0.23 and we now have, what we call, MapReduce 2.0 (MRv2) or YARN

It's also worth to have a look at this diagram too. It shows the tree of different Hadoop versions as well as the 3rd party distributions on top of them.

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