The following table lists known issues and any available workarounds for this release.
|Customers performing the HDP 2.5 upgrade, following the documentation from Hortonworks, need to follow the instructions in this Service Bulletin before performing the upgrade.||Before upgrading to HDP 2.5, customers must perform the procedures in Service Bulletin ID: SB 871.
|Ambari may not start automatically after a restart.||Modify the /etc/init.d/ambari-server script by running the following command: sed -i \"s|^SCRIPT_DIR=.*|SCRIPT_DIR=/etc/init.d|g\" /etc/init.d/ambari-server”|
|Intermittent failure to start WebHCat||Intermittent issue. Resolve by manually restarting.|
|Application Timeline Server failed to start during system restart||Intermittent issue. Resolve by manually restarting.|
|During NameNode starts, messages seen during NameNode startup in the Ambari operations log stdout:
2016-09-22 17:56:18,917 - Getting jmx metrics from NN failed. URL: http://selena1.labs.teradata.com:50070/jmx?qry=Hadoop:service=NameNode,name=FSNamesystem Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/resource_management/libraries/functions/jmx.py", line 42, in get_value_from_jmx return data_dict["beans"][property] IndexError: list index out of range
|Patched in Ambari 2.4.1|
|Disable Kerberos hangs on "Unkerberize Cluster' task.||Disabling Kerberos is not recommended.|
|Grafana Dashboard may display no data and a warning message.||Grafana requires at least one data source to be defined by name and a case-sensitive URL. Since Ambari registers all hosts with lowercase hostnames, Grafana may display no data and a warning message. Follow the procedure in Service Bulletin ID: SB 889 to resolve the issue.