I need to upgrade Hadoop from CDH4 to CDH5. I have 5 nodes.
Can I upgrade using Cloudera Manager using parcels?
What is the easiest way to upgrade Hadoop? Can someone provide me steps?
Thanks,
Raj Baba
Upgrading Hadoop from version CDH4 to CDH5
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In Cloudera hadoop distribution, Cloudera Manager(CM) and CDH are different components. For upgrading CDH4 to CDH5, you would need to upgrade your Cloudera Manager version to CM5 first. You cannot use parcels for upgrading your Cloudera Manager version as this is the base component. Depends on your Linux distribution, tools (yum/apt) can be used for upgrading your CM.
If you are using CentOS or RHEL, you may use yum for upgrading your CM, update your
/etc/yum.repos.d/cloudera-manager.repofile as follows :After updating this file, you may use the command
yum upgrade cloudera-manager-*for upgrading.Once CM is CM5, for upgrading CDH4 to CDH5 parcel is the best option. Following cloudera documentation can be used for upgrading
http://www.cloudera.com/content/cloudera/en/documentation/core/latest/topics/cm_mc_upgrade_tocdh5_using_parcels.html