Main con for me is that all the metadata is kept in ram of single node, so if you have a lot of files, you need a lot of ram on main (name) node. This limits scalability.
Another thing is that it does not like a lot of directories. It starts checking all the directories now and then, locking data node in the meantime. For me this knocked out nodes from the cluster, so I had to make a patch limiting check depth. Also remember, you can only write a file as a whole, no updates. Appends are also not available in stable apache releases. 14.09.2011 21:03 пользователь "Per Steffensen" <st...@designware.dk> написал:
