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Hortonworks fails to create namenode high availability

by on August 3, 2015

We’re working for more than a day to solve this out, until we’ve found how to work around it.

We have Ambari 1.6.1 running HDP 2.1 (quiet old, but this is what our customer has).

When one tries to enable HA for namenode, the is a nice wizard telling you to do this and that.
On step 4 we should do:

hdfs dfsadmin -safemode enter
hdfs dfsadmin -saveNamespace

and then wait till the checkpoint is created.
But the checkpoint is never detected.

We even found a jira about this:

Ambari NN HA wizard cannot detect checkpoint” –

But the fix is in Ambari 1.7.0 – which does not support HDP 2.1 :-(


We’ve copied the URL to another tab in the browser and just changed the step number:

Than we could continue with the wizard.

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