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1. Edit ams-site, Set timeline.metrics.service.operation.mode = distributed
2. Edit ams-hbase-site,
   
   1. Set hbase.rootdir = hdfs://<namenode-host>:8020/user/ams/hbase [ If NN HA is enabled, hdfs://<nameservice-id>/user/ams/hbase ]
      (Note: /user/ams/hbase here is the directory where metric data will be stored in HDFS)
   2. Set hbase.cluster.distributed = true
   3. Add dfs.client.read.shortcircuit = true (This is an optimization with a local DN present)
3. In Ambari versions >= 2.2.1 make sure hbase.zookeeper.property.clientPort=2181 (cluster Zookeeper port).
4. Restart Metrics Collector

Note: In Ambari 2.0.x, there is a bug in deploying AMS in distributed mode, if Namenode HA is enabled. Please follow the instruction listed in this JIRA as workaround steps: (AMBARI-10707)

Note: In Ambari 2.2.1, stack advisor changes the dependent configs for distributed mode automatically through recommendations. Ideally, the only config that needs to be changed is timeline.metrics.service.operation.mode = distributed. The other configs - hbase.rootdir, hbase.cluster.distributed and dfs.client.read.shortcircuit will be changed automatically.

Migrating data from embedded to distributed mode

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