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mstepanov
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Re: CDH downgrade from 5.5 to 5.3

by New Contributor in Support Questions
‎03-24-2016 02:50 AM
‎03-24-2016 02:50 AM
Clint, thank you for this information! ... View more

Re: CDH downgrade from 5.5 to 5.3

by New Contributor in Support Questions
‎03-23-2016 07:07 AM
‎03-23-2016 07:07 AM
I'm going to upgrade production cluster so would like to have a possibility to restore old CDH in case of some critical issues. Cluster is located on hardware servers so I cannot use snapshots. ... View more

CDH downgrade from 5.5 to 5.3

by New Contributor in Support Questions
‎03-23-2016 06:10 AM
‎03-23-2016 06:10 AM
Hi,   Does somebody happen to know whether CDH can be downgraded from 5.5.x to 5.3/5.4?   I tried to use old parcel but then HDFS namenodes fails to start due to "Unexpected version of storage directory .../dfs/nn".   Also I found the post https://community.cloudera.com/t5/Cloudera-Manager-Installation/Downgrade-Procedure/td-p/25430 where it was said that Cloudera didn't support downgrade operations. But maybe somebody met (un)official instructions how to do it manually?   Thank you in advance! ... View more
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