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Neil Y |
at Jul 11, 2012 at 3:51 pm
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Amandeep,
Thanks for confirming. This was the issue. Replication appears to be
working now.
I encountered a couple of caveats that I wanted to document here for others:
1) The client configurations need to be pushed to all nodes (as described
in item #2 on this page<
https://ccp.cloudera.com/display/CDH4DOC/HBase+Replication#HBaseReplication-DeployingHBaseReplication>which, although CDH4 specific, was still a useful howto). To push the
confs, I created a custom helper shell script that performed to scp to all
nodes, moved the old confs out of the way (/etc/hadoop/conf and
/etc/hbase/conf), unzipped the new global client archive, and moved them to
the final destination (/etc/<service>/conf). It sounds like deploying
client confs with CDH4 is more streamlined, however.
2) The hbase-conf/hbase-site.xml that was created via the "Generate Client
Configuration" button did not contain the replication=true property that I
entered into the HBase configuration under Service-Wide Settings -> HBase
Service Configuration Safety Valve. I needed to manually unzip
global-clientconfig.zip, edit hbase-site.xml to include "hbase.replication"
property, and re-zip. Perhaps this is a bug with CDH3u3?
Thanks for the input, hope this helps someone down the line.
Neil
On Friday, July 6, 2012 6:27:04 PM UTC-4, Amandeep Khurana wrote:Yes, your suspicion is right. You have to deploy the client
configurations generated by Cloudera Manager to the /etc/<service>/conf for
the clients (like HBase shell) to pick them up.
--
Amandeep Khurana
Solutions Architect, Cloudera Inc
Twitter: @amansk
On Friday, July 6, 2012 at 3:22 PM, Neil Y wrote:
Yes, I did restart the HBase service.
Yes, it's a CM managed cluster. The "add_peer" was in the Hue HBase
shell. The same issue occurs when I use hbase shell via SSH command line.
I suspect both the Hue and command-line launched hbase shell terminals are
attempting to read from the default configuration locations (such as
/etc/hbase and /etc/zookeeper etc.) instead of the CM generated
configuration dirs under /var/run/cloudera-scm-agent/process.
Neil Yalowitz
On Friday, July 6, 2012 5:09:35 PM UTC-4, Amandeep Khurana wrote:
Neil,
Did you restart HBase after adding that config? This is a Cloudera
Manager managed cluster?
Amandeep
On Jul 6, 2012, at 2:07 PM, Neil Y wrote:
I'm attempting to enable HBase replication of several tables to another
HBase cluster. I have added to the HBase Service Configuration Safety
Valve:
<property>
<name>hbase.replication</name>
<value>true</value>
</property>
When I attempt to add a peer in the Hue HBase shell:
hbase(main):006:0* add_peer '1',"my-zk:2181:/hbase"
ERROR: java.lang.RuntimeException: hbase.replication isn't true, please
enable it in order to use replication
Any ideas?
Thanks,
Neil Yalowitz
