Now, when you say plenty of space…The default setting in reserved space may
be larger than your VM. Check “Reserved Space for Non DFS Use” in the
DataNode settings in CM (Services > HDFS > Configuration > DataNode). Make
sure that this is set to a much smaller value than the size of your VM disk.

Thank you,

*Brian Burton*

*Customer Operations Engineer, Cloudera*

*From:* Alex Soto
*Sent:* Thursday, June 21, 2012 1:21 PM
*To:* Mark Schnegelberger
*Cc:* Cloudera Manager Users
*Subject:* Re: Pseudo distributed mode

Data node is running fine; there are no errors in its log.

Yes, this is VM, and there is plenty of space available.

I have changed the replication factor to 0 but the problem persists (after
restart of services).

This is brand new installation so there is practically no data. I can't
eve open the HBase Web UI because of this error.



Amicus Plato, sed magis amica veritas.

On Jun 21, 2012, at 1:12 PM, Mark Schnegelberger wrote:

Any chance this pseudo cluster is on a virtual machine, Alex? If so, how
much hard drive space did you allocate to the VM?


Mark Schnegelberger

Customer Operations Engineer


On Thu, Jun 21, 2012 at 12:57 PM, bc Wong wrote:

On Thu, Jun 21, 2012 at 9:52 AM, Alex Soto wrote:

I've installed CM 4.01 in a single server (for testing purposes) but HBase
does not work.

I have changed HDFS replica factor to 1.
Errors in the log files complain that files could only be replicated to 0
nodes instead of 1.

Has anybody tested with a single node?
Is there a setting I need to change to make this work?

Is your datanode running? Do you see errors in the DN log?

bc Wong
Cloudera Software Engineer


Mark Schnegelberger

Customer Operations Engineer


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