this issue is still not resolved... unfortunatelly calling HConnectionManager.deleteConnection(conf, true); after the MR job is finished, does not close the connection to the zookeeper we have 3 zookeeper nodes by default there is a limit of 10 connections allowed from a single client
so after running 30 MR jobs scheduled by our application, we have 30 unclosed connections, trying to start a new MR job results in a failure, the connection to the zookeeper ensamble is droped... the work around to restart the whole application after 30 MR jobss is not very elegant... :-(
