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From "Kevin O'dell" <kevin.od...@cloudera.com>
Subject Re: How to clear hbase data in zookeeper
Date Sat, 01 Dec 2012 02:55:38 GMT

  There are a couple ways you can do this.  The first is the small hammer
assuming ZK is using /hbase you can log into the ZK from a ZK node using
/usr/lib/zookeeper/bin/zkCli.sh once you are in the shell you can then
execute a rmr /hbase and this will remove all the HBase data except the id
of the ZK node.  Please make sure HBase is shut down.

  There is a REALLY big hammer, some may call is a sledge hammer but you
can delete the ZK data dir.  Go to each ZK node and from the shell as root
execute a rm -rf /<path to zk data> I believe the default is
/var/lib/zookeeper/version-2.  Again this is not recommended and you should
have both HBase and ZK shut down for this.

On Fri, Nov 30, 2012 at 8:42 PM, Stephen Boesch <javadba@gmail.com> wrote:

> It is my intention to clean the zookeeper info, since getting questionable
> behavior in hbase.
> what is the process to view/clear the data (hbase..) in zookeeper?
> To view it i tried something like:
> java -cp zookeeper.jar:lib/*:conf org.apache.zookeeper.ZooKeeperMain ls /
> hscaler-cn001:2181
> I get an output of
> Connecting to localhost:2181
> log4j:WARN No appenders could be found for logger
> (org.apache.zookeeper.ZooKeeper).
> log4j:WARN Please initialize the log4j system properly.
> WatchedEvent state:SyncConnected type:None path:null
> [hbase, zookeeper]
> I"m not sure how to get more specific info (using /hbase for example
> results in same info..)
> Also: how to remove all of the hbase related data in zookeeper ?
> Thanks!

Kevin O'Dell
Customer Operations Engineer, Cloudera

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