Good morning! So, I just upgraded a small cluster to Version 3.0.0. The upgrade seemed to go well. But after a reboot I am stuck- I have two services that ambari still thinks are "stopping...". (seconday namenode and also zookeeper) Because of this, I can't get the services running. The error I get is: Error message: java.lang.IllegalArgumentException: Invalid transition for servicecomponenthost, clusterName=ontomatedev, clusterId=2, serviceName=HDFS, componentName=SECONDARY_NAMENODE, hostname=myhost.domain.com, currentState=STOPPING, newDesiredState=STARTED As far as I can tell, I *should* hopefully be able to "reset" this somehow via a curl command but I'm at a loss as to what. Something like this has no effect: curl -s -u admin:admin -H 'X-Requested-By: Ambari' -X PUT -d '{"RequestInfo":{"context":"Stop Component"},"Body":{"HostRoles":{"state":"INSTALLED"}}}' http://localhost:8080/api/v1/clusters/ontomatedev/hosts/myhost.domain.com/host_components/SECONDARY_NAMENODE If anyone can tell me how to reset this incorrect 'state' I'd be *most* grateful!!! ... View more

hi! So, I'm the sysadmin of a hadoop cluster. I am not a developer, nor do I "use" it. But... I make sure it's running and happy and secure and... so on. In reviewing HDFS disk use lately, I noticed our numbers are kinda high. After some digging, it appears all of the space is going into hbase. OK cool, that's what our developers are doing. Stuffing things in hbase. But I appear to be losing a bunch of disk space to the hbase "archives" folder. Which is something I assume that hbase is putting stuff in when tables are deleted or...? I checked with one of our developers, he sees that in the archive there's tables he deleted long ago. So... my simple question is, how do I clean out unneeded things from the hbase "archive"? I assume manually deleting stuff via hdfs is **not** the way to go. [hdfs dfs -du -s -h /apps/hbase/data/* 338.6 K /apps/hbase/data/.hbase-snapshot 0 /apps/hbase/data/.tmp 20 /apps/hbase/data/MasterProcWALs 830 /apps/hbase/data/WALs 6.6 T /apps/hbase/data/archive <=== THIS. 0 /apps/hbase/data/corrupt 4.1 T /apps/hbase/data/data 42 /apps/hbase/data/hbase.id 7 /apps/hbase/data/hbase.version 30.7 K /apps/hbase/data/oldWALs ANY and all help for an hbase newbie would be really appreciated ... View more