Author Archives: Eli Collins

Supported Operating Systems in CDH3

Categories: General

While Cloudera’s Distribution including Apache Hadoop (CDH) operating system support is covered in the documentation, we thought a quick overview of the changes in CDH3 would be helpful to highlight before CDH3 goes stable. CDH3 supports both 32-bit and 64-bit packages for Red Hat Enterprise Linux 5 and CentOS 5. A significant addition in CDH3 Beta 4 was 64-bit support for SUSE Linux Enterprise Server 11 (SLES 11).

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Apache Hadoop Availability

Categories: CDH General Hadoop HDFS MapReduce

A common question on the Apache Hadoop mailing lists is what’s going on with availability? This post takes a look at availability in the context of Hadoop, gives an overview of the work in progress and where things are headed.

Background

When discussing Hadoop availability people often start with the NameNode since it is a single point of failure (SPOF) in HDFS, and most components in the Hadoop ecosystem (MapReduce,

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CDH2 Update 3 Now Available

Categories: Community Hadoop HDFS MapReduce

Cloudera is happy to announce the availability of the third update to version 2 of our distribution for Apache Hadoop (CDH2). CDH2 Update 3 contains a number of important fixes like HADOOP-5203, HDFS-1377, MAPREDUCE-1699, MAPREDUCE-1853, and MAPREDUCE-270. Check out the release notes and change log for more details on what’s in this release. You can find the packages and tarballs on our website,

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CDH2 Update 2 Now Available

Categories: Hadoop

Cloudera is happy to announce the availability of the second update to version 2 of our distribution for Hadoop (CDH2). While new features are coming in version 3, we regularly update version 2 with improvements and bug fixes. CDH2 Update 2 contains a number of important fixes for Hadoop and Pig. Check out the release notes, Hadoop change log, and Pig change log. You can find the packages and tarballs on our website,

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What’s New in CDH3b2: Core Hadoop

Categories: General

In this post I’ll cover some of the larger or more significant changes that have gone into core Hadoop in CDH3 beta 2.

The Hadoop in CDH3 is based on the latest Apache Hadoop core release – version 0.20.2 – which was released February 26th, 2010. Details of what changed in the Apache Hadoop dot release can be found in the release notes and change log. We’ve included hundreds of additional bug fixes,

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