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MapReduce >> mail # user >> Re: could only be replicated to 0 nodes, instead of 1


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Re: could only be replicated to 0 nodes, instead of 1
Keith,

Assuming that you were seeing the problem when you captured the namenode
webUI info, it is not related to what I suspect. This might be a good
question for CDH forums given this is not an Apache release.

Regards,
Suresh

On Tue, Sep 4, 2012 at 10:20 AM, Keith Wiley <[EMAIL PROTECTED]> wrote:

> On Sep 4, 2012, at 10:05 , Suresh Srinivas wrote:
>
> > When these errors are thrown, please send the namenode web UI
> information. It has storage related information in the cluster summary.
> That will help debug.
>
> Sure thing.  Thanks.  Here's what I currently see.  It looks like the
> problem isn't the datanode, but rather the namenode.  Would you agree with
> that assessment?
>
> NameNode 'localhost:9000'
>
> Started:         Tue Sep 04 10:06:52 PDT 2012
> Version:         0.20.2-cdh3u3, 03b655719d13929bd68bb2c2f9cee615b389cea9
> Compiled:        Thu Jan 26 11:55:16 PST 2012 by root from Unknown
> Upgrades:        There are no upgrades in progress.
>
> Browse the filesystem
> Namenode Logs
> Cluster Summary
>
> Safe mode is ON. Resources are low on NN. Safe mode must be turned off
> manually.
> 1639 files and directories, 585 blocks = 2224 total. Heap Size is 39.55 MB
> / 888.94 MB (4%)
> Configured Capacity      :       49.21 GB
> DFS Used         :       9.9 MB
> Non DFS Used     :       2.68 GB
> DFS Remaining    :       46.53 GB
> DFS Used%        :       0.02 %
> DFS Remaining%   :       94.54 %
> Live Nodes       :       1
> Dead Nodes       :       0
> Decommissioning Nodes    :       0
> Number of Under-Replicated Blocks        :       5
>
> NameNode Storage:
>
> Storage Directory       Type    State
> /var/lib/hadoop-0.20/cache/hadoop/dfs/name      IMAGE_AND_EDITS Active
>
> Cloudera's Distribution including Apache Hadoop, 2012.
>
>
> ________________________________________________________________________________
> Keith Wiley     [EMAIL PROTECTED]     keithwiley.com
> music.keithwiley.com
>
> "And what if we picked the wrong religion?  Every week, we're just making
> God
> madder and madder!"
>                                            --  Homer Simpson
>
> ________________________________________________________________________________
>
>
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB