Ah ha!  That's useful to know.  Here's all the details

Attribute Name  Value   Description
HBase Version   0.90.4-cdh3u2, r        HBase version and svn revision
HBase Compiled Thu Oct 13 20:32:26 PDT 2011, jenkins When HBase version was compiled and by whom Metrics requests=0, regions=177, stores=1542, storefiles=1251, storefileIndexSize=100, memstoreSize=1, compactionQueueSize=0, flushQueueSize=0, usedHeap=530, maxHeap=995, blockCacheSize=161721360, blockCacheFree=47128768, blockCacheCount=2236, blockCacheHitCount=0, blockCacheMissCount=37422, blockCacheEvictedCount=8255, blockCacheHitRatio=0, blockCacheHitCachingRatio=0 RegionServer Metrics; file and heap sizes are in megabytes Zookeeper Quorum hbase-nn.babelcentral.com:2181 Addresses of all registered ZK servers


I don't think I have stored any very large objects. Could a bug in my code bring down a region server by writing a very large object?

Thanks again
P





On 3/13/12 2:52 PM, Stack wrote:
On Tue, Mar 13, 2012 at 10:20 AM, Peter Wolf<opus...@gmail.com>  wrote:
Actually, I am using the Cloudera Version CDH3.  Should have said...

Which CDH3?  u1,2, or 3?

So, I guess that's OK.

However, I wasn't hitting it that hard.  I had 4 clients each writing about
1000 bytes about 2/second.

Thats not hard.

What is a Fat Cell, and how do I query the number of Regions/Server?

Fat cells is a fuzzy term for entries that are megabytes in size...>
10MB or so.

To find out how many regions, you look at the regionserver UI.

St.Ack

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