As one picture could give more than thousand words...check out the first figure on http://www.larsgeorge.com/search?q=HBase+Architecture
It's the best figure I know to understand how Hadoop(here HDFS) and HBase are related to each other. ________________________________ Von: AnExplorer <[email protected]> An: [email protected] Gesendet: 13:34 Dienstag, 12.Juni 2012 Betreff: RE: one HRegionServer means one DataNode? Thanks for the response Ram!! It is pretty much clear to me now that RegionServers are part of HBase and Datanodes are part of HDFS. Actually I have a query - I had setup a hadoop cluster with one master and 3 slaves. Are these three slaves called RegionServer? And if yes How many data nodes are there now with me..I guess its 3.plz correct me if I am wrong. thx.. Ramkrishna.S.Vasudevan wrote: > > Hi > > Region Server is not DataNode. > > DataNodes are part of HDFS. RegionServers are part of HBase. HBase uses > HDFS to store data and in the process of storing data DataNodes are used > by > HDFS. DataNodes are the actual machines where the data resides. > > Regards > Ram > > >> -----Original Message----- >> From: AnExplorer [mailto:[email protected]] >> Sent: Tuesday, June 12, 2012 3:18 PM >> To: [email protected] >> Subject: one HRegionServer means one DataNode? >> >> >> Hi..I am new to Hbase. Can anyone please suggest that one HRegionServer >> means >> one DataNode? Can there be multiple data nodes in one >> HRegionServer??:confused: >> -- >> View this message in context: http://old.nabble.com/one-HRegionServer- >> means-one-DataNode--tp33998720p33998720.html >> Sent from the HBase User mailing list archive at Nabble.com. > > > -- View this message in context: http://old.nabble.com/one-HRegionServer-means-one-DataNode--tp33998720p33999181.html Sent from the HBase User mailing list archive at Nabble.com.
