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https://issues.apache.org/jira/browse/AMBARI-11013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nate Cole resolved AMBARI-11013.
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Resolution: Fixed
> HDFS Upgrade Pack For HDP-2.2 to HDP-2.3
> ----------------------------------------
>
> Key: AMBARI-11013
> URL: https://issues.apache.org/jira/browse/AMBARI-11013
> Project: Ambari
> Issue Type: Task
> Reporter: Nate Cole
> Assignee: Nate Cole
> Fix For: 2.1.0
>
>
> - HDFS Pre-Upgrade Check Change No Longer Requires HA
> Note: For users who are upgrading from champlain-m10 and onwards to dal, and
> have “truncate” feature enabled in HDFS, rolling upgrade is NOT supported.
> Check following flag in hdfs-site.xml to see if “truncate” is enabled:
> “dfs.allow.truncate” = “true”
> - NameNode Configuration Change For Ranger
> Note: If Ranger is enabled, then there is a configuration change needed in
> the NameNode configurations to ensure that Ranger authorization will function
> with HDP 2.3.
> Edit {{hdfs-site.xml}} with the following change:
> If Ranger is enabled, configure
> “dfs.namenode.inode.attributes.provider.class” with the ranger’s plugin class
> name “org.apache.ranger.authorization.hadoop.RangerHdfsAuthorizer”
> If ranger is disabled, this configuration must not be there.
> Configure Ranger KMS in hdfs-site.xml
> The key is “dfs.encryption.key.provider.uri”
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