Description of Problem: Some services have issue coming up after express upgrade on IOP clusters

Workaround: For a detailed workaround, see ​Post-upgrade Tasks.

Summary: On IOP migrated cluster, if solr cloud is on then audit to solr is failing for storm due to unauthorised error

Description of Problem: Audits for Ranger Storm plugin are not written when using Ambari Infra/SolrCloud.

Workaround:

Summary: Oozie Hive job failed with NoClassDefFoundError

Description of Problem: If Oozie HA is enabled, Oozie Hive jobs may fail with the following error in the yarn application log:

 <<< Invocation of Main class completed <<<

Failing Oozie Launcher, Main class [org.apache.oozie.action.hadoop.HiveMain], main() threw exception, org/apache/hadoop/hive/shims/ShimLoader
java.lang.NoClassDefFoundError: org/apache/hadoop/hive/shims/ShimLoader
	at org.apache.hadoop.hive.conf.HiveConf$ConfVars.<clinit>(HiveConf.java:400)
	at org.apache.hadoop.hive.conf.HiveConf.<clinit>(HiveConf.java:109)
	at sun.misc.Unsafe.ensureClassInitialized(Native Method)

Workaround: Use the following as workaround steps:

Description of Problem: After upgrading from BigInsights 4.2.0 or 4.2.5 to HDP 2.6, ATS applications remain in the active directory and are never moved to the done directory upon completion. This is due to an incorrect property specified in yarn-site.

Workaround:

Set the following property in yarn-site:

Property Name: yarn.timeline-service.store-class
Property Value: org.apache.hadoop.yarn.server.timeline.EntityGroupFSTimelineStore

After setting this property, restart any stale components.

Summary: RPC Protection Type is not being set on the IOP migrated cluster

Description of Problem: Test connection fails for HDFS repository.

Workaround: In Ranger UI, edit the HDFS repository and set hadoop.rpc.protection parameter to a value of authentication.