| Table of Contents |
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- "Cloudera recomments settings /proc/sys/vm/swappiness to 0"
- "There are mismatched versions across the system, which will cause failures. See below for details on which hosts are running what versions of components"
- (this just refers to Java)
- "Cloudera supports versions 1.6.0_31 and 1.7.0_55 of Oracle's JVM and later. OpenJDK is not supported, and gcj is known to not work. Check the component version table below to identify hosts with unsupported versions of Java."
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The next set of pages configure the various services and roles.
Firstly a set of directories. These should each have a single directory and it should read "/mnt" (the Hadoop installer will create symlinks for "/raidarray" if that is present). Sometimes the installer will insert "/dbarray" as a second directory - this is undesirable, so review the page carefully and use the "-" button to remove these suggestions.
When done "Continue" to the next page, and automated installation page. When that has completed, "Continue" again and "Finish" after accepting the Web pages' congratulations. However you are not quite done yet.
After selecting, "Finish" you are taken to the main monitoring/management page. You may see red "Heath Issues" - it is worth checking these, but they are mainly "low free space" warnings for log directories (the "infinit.e-hadoop-installer" has quite aggressive log rotate/delete schedules, and the root partition is not used for much, so these can be ignored.)
Select the MapReduce service from the home page, and then the Configuration tab:
Using the "Search" bar to find them, the following configuration settings should be modified
TODO
TODO
Installing CDH5 (YARN)
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