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https://issues.apache.org/jira/browse/AMBARI-10976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Hurley resolved AMBARI-10976.
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Resolution: Fixed
> HDP-2.2 To HDP-2.3 Upgrade Pre-Upgrade Checks
> ---------------------------------------------
>
> Key: AMBARI-10976
> URL: https://issues.apache.org/jira/browse/AMBARI-10976
> Project: Ambari
> Issue Type: Task
> Components: ambari-server
> Affects Versions: 2.1.0
> Reporter: Jonathan Hurley
> Assignee: Jonathan Hurley
> Priority: Critical
> Fix For: 2.1.0
>
>
> Create the new pre-requisite checks for HDP 2.2 to HDP 2.3 rolling upgrades.
> This includes:
> - Ensuring the cluster stack version is at HDP 2.2 and is moving to HDP 2.3
> - Ensure that YARN ResourceManager HA is enabled (Warning if not enabled)
> - Enable client retry properties for HDFS, Hive, and Oozie. These properties
> are not included by default, so you might need to add them to the site files.
> -- For HDFS, set dfs.client.retry.policy.enabled to true in hdfs-site.xml on
> all nodes with HDFS services.
> -- For Hive, specify hive.metastore.failure.retries and
> hive.metastore.client.connect.retry.delay in hive-site.xml (for example,
> /usr/hdp/2.2.0.0-2041/hive/conf/hive-site.xml). The default value for retries
> is 24; the default for retry delay is 5s.
> -- For Oozie, export OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS}
> -Doozie.connection.retry.count=<number of retries>" in oozie-env.sh (for
> example, /usr/hdp/2.2.0.0-2041/oozie/conf/oozie-env.sh). A typical value for
> number of retries is 5.
> - Enable work-preserving ResourceManager/NodeManager/TimelineServer restart
> in the yarn-site.xml file for each node. For more information, see
> Work-Preserving Restart in the YARN Resource Management Guide.
> - Make sure HiveServer2 is configured for rolling upgrade. Set or confirm the
> following server-side properties:
> -- Set hive.server2.support.dynamic.service.discovery to true
> -- Set hive.zookeeper.quorum to a comma-separated list of ZooKeeper host:port
> pairs in the Zookeeper ensemble (e.g. host1:port1, host2:port2, host3:port3).
> By default this value is blank.
> -- Add the hive.zookeeper.session.timeout property to the hive-site.xml file
> (if necessary), and specify the length of time that ZooKeeper will wait to
> hear from HiveServer2 before closing the client connection. The default value
> is 60 seconds.
> -- Set hive.server2.zookeeper.namespace to the value for the root namespace
> on ZooKeeper. (The root namespace is the parent node in ZooKeeper used by
> HiveServer2 when supporting dynamic service discovery.) Each HiveServer2
> instance with dynamic service discovery enabled will create a znode within
> this namespace. The default value is hiveserver2.
> - Tez Configurations
> -- tez.lib.uris (in the tez-site.xml file) should contain only a single value
> pointing to a version-specific Tez tarball file. For 2.2 installations, the
> Tez app jars are in /hdp/apps/${hp.version}
> -- Set tez.use.cluster.hadoop-libs to false. (If true, the deployment will
> expect Hadoop jar files to be available on all nodes.
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