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Is HDFS data is preserved during CDH upgrade from 4 to 5

Is HDFS data is preserved during CDH upgrade from 4 to 5

Explorer

Hi,

 

Currently we have cluster running on cdhversion4, with mapreduce. And planning to upgrade to CDH5 with YARN. Does  cloudera manager capable of  preserving HDFS data during CDH upgrade window... ??

 

-Eldo- 

1 REPLY 1

Re: Is HDFS data is preserved during CDH upgrade from 4 to 5

Super Collaborator

Data on the HDFS filesystem is not removed during the upgrade process.  The upgrade process is documented here:

 

For Cloudera Canager (CM)- 

http://www.cloudera.com/content/cloudera-content/cloudera-docs/CM5/latest/Cloudera-Manager-Administr...

 

For CDH4 to CDH5 in a CM managed cluster

http://www.cloudera.com/content/cloudera-content/cloudera-docs/CM5/latest/Cloudera-Manager-Managing-...


For CDH only environments

http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH5/latest/CDH5-Installation-Guide/C...