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https://issues.apache.org/jira/browse/MAPREDUCE-3131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13123885#comment-13123885
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Arun C Murthy commented on MAPREDUCE-3131:
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bq. Why do we need more than one datanode and nodeManager in a single node
setup.?
Prashanth - we already have docs/scripts for running all of Hadoop on a single
cluster - they are the standard bin/hdfs & bin/yarn scripts.
----
Now, one possible enhancement is to go through the default values of configs
and check which ones cause it to not work properly on a single node *out of the
box*.
If there is none, we declare victory.
If there are some we cannot make default (for e.g. they break tests etc.) we
can then check in a conf/singlenode-hdfs-site.xml and
conf/singlenode-yarn-site.xml.
----
Another enhancement is to check in configs & scripts with which people can run
multiple DataNodes/NodeManagers on a single node so that folks get a feel for a
'real' cluster on a single machine to test/develop/experience.
----
I'm happy to have you do either or both of the above.
However, checking in another set of scripts to run a single node install with 1
NN/DN/RM/NN is just a maintenance overhead.
Makes sense?
> Docs and Scripts for setting up single node MRV2 cluster.
> ----------------------------------------------------------
>
> Key: MAPREDUCE-3131
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3131
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: documentation, mrv2
> Affects Versions: 0.24.0
> Reporter: Prashant Sharma
> Assignee: Prashant Sharma
> Priority: Trivial
> Labels: documentation, hadoop
> Fix For: 0.24.0
>
> Attachments: MAPREDUCE-3131.patch, MAPREDUCE-3131.patch
>
> Original Estimate: 168h
> Time Spent: 48h
> Remaining Estimate: 120h
>
> Scripts to run a single node cluster with a default configuration. Takes care
> of running all the daemons including hdfs and yarn.
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