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From Olivier Renault <orena...@hortonworks.com>
Subject Re: Clean un-installation via Ambari
Date Thu, 06 Aug 2015 08:12:18 GMT
Log on your ambari-server bring it down and reset it

$ ambari-server stop
$ ambari-server reset

If you are using postgresql – installed and configured by ambari server, you should be able
to restart. If you are using MySQL or Oracle, you will need to drop / re-create the database
manually.

$ ambari-server setup
….

Good luck,
Olivier

From: Kaliyug Antagonist
Reply-To: "user@ambari.apache.org<mailto:user@ambari.apache.org>"
Date: Thursday, 6 August 2015 10:07
To: "user@ambari.apache.org<mailto:user@ambari.apache.org>"
Subject: Clean un-installation via Ambari

I had installed HDP-2.2.4.2-2 using Ambari Version 2.0.0.

There have been several issues in the cluster due to misconfiguration in the datanode directories
and so on. Now I get several alerts and any MR that I execute fails with an error like this
:


15/06/01 13:53:44 INFO mapreduce.Job: Job job_1431689151537_0003 running in uber mode : false
15/06/01 13:53:44 INFO mapreduce.Job: map 0% reduce 0%
15/06/01 13:53:47 INFO mapreduce.Job: Task Id : attempt_1431689151537_0003_m_000000_1000,
Status : FAILED
java.io.FileNotFoundException: File /opt/dev/sdb/hadoop/yarn/local/filecache does not exist

15/06/01 13:53:51 INFO mapreduce.Job: Task Id : attempt_1431689151537_0003_m_000000_1001,
Status : FAILED
java.io.FileNotFoundException: File /opt/dev/sdd/hadoop/yarn/local/filecache does not exist

15/06/01 13:53:55 INFO mapreduce.Job: Task Id : attempt_1431689151537_0003_m_000000_1002,
Status : FAILED
java.io.FileNotFoundException: File /opt/dev/sdh/hadoop/yarn/local/filecache does not exist


I wish to clean un install the cluster and reinstall it, it is ok even if Ambari needs to
be uninstalled and reinstalled.

How can I do it ?
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