So hbase and hadoop are running fine, but we wanted to test our application performance. So we ran some test cases for about 7 hours sending in events every 200ms to generate some load. After the 7 hours the application server could not connect to zookeeper, and when I checked the logs this is what I saw. So the application functions just not when we ran the test.
Config is hadoop: 0.20.203.0 hbase: 0.90.3 So I am just trying to upgrade to hadoop: 1.0.3 hbase: 0.92.1 Then going to run the same test again. On 20 May 2012, at 16:56, Ben Cuthbert wrote: > I will try again as I did not run that. I just saw this error when trying to > use hbase-explorer to connect. > > > On 20 May 2012, at 16:02, Michael Segel wrote: > >> What did you see when you ran the HBase shell's status? >> Did you run status w higher details? >> (see status help) >> >> >> On May 20, 2012, at 2:12 AM, Ben Cuthbert wrote: >> >>> All >>> >>> We run a load test and after about 3 hours our application stopped. Check >>> the logs I see this in the hbase-master log >>> >>> 2012-05-20 08:08:17,251 INFO >>> org.apache.hadoop.hbase.master.AssignmentManager: Region has been OFFLINE >>> for too long, reassigning -ROOT-,,0.70236052 to a random server >>> 2012-05-20 08:08:17,252 DEBUG >>> org.apache.hadoop.hbase.master.AssignmentManager: Forcing OFFLINE; >>> was=.META.,,1.1028785192 state=OFFLINE, ts=1337497517243 >>> 2012-05-20 08:08:17,252 DEBUG >>> org.apache.hadoop.hbase.master.AssignmentManager: Forcing OFFLINE; >>> was=-ROOT-,,0.70236052 state=OFFLINE, ts=1337497517243 >>> 2012-05-20 08:10:10,309 INFO org.apache.zookeeper.server.NIOServerCnxn: >>> Accepted socket connection from /0:0:0:0:0:0:0:1%0:62747 >>> 2012-05-20 08:10:10,315 INFO org.apache.zookeeper.server.NIOServerCnxn: >>> Client attempting to establish new session at /0:0:0:0:0:0:0:1%0:62747 >>> 2012-05-20 08:10:10,316 INFO org.apache.zookeeper.server.NIOServerCnxn: >>> Established session 0x137653a0e8e02fa with negotiated timeout 40000 for >>> client /0:0:0:0:0:0:0:1%0:62747 >>> 2012-05-20 08:10:10,316 INFO >>> org.apache.zookeeper.server.PrepRequestProcessor: Got user-level >>> KeeperException when processing sessionid:0x137653a0e8e02fa type:create >>> cxid:0x1 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error >>> Path:/hbase Error:KeeperErrorCode = NodeExists for /hbase >>> 2012-05-20 08:10:10,329 INFO >>> org.apache.zookeeper.server.PrepRequestProcessor: Got user-level >>> KeeperException when processing sessionid:0x137653a0e8e02fa type:create >>> cxid:0x2 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error >>> Path:/hbase/unassigned Error:KeeperErrorCode = NodeExists for >>> /hbase/unassigned >>> 2012-05-20 08:10:10,329 INFO >>> org.apache.zookeeper.server.PrepRequestProcessor: Got user-level >>> KeeperException when processing sessionid:0x137653a0e8e02fa type:create >>> cxid:0x3 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error >>> Path:/hbase/rs Error:KeeperErrorCode = NodeExists for /hbase/rs >>> 2012-05-20 08:10:10,330 INFO >>> org.apache.zookeeper.server.PrepRequestProcessor: Got user-level >>> KeeperException when processing sessionid:0x137653a0e8e02fa type:create >>> cxid:0x4 zxid:0xfffffffffffffffe txntype:unknown reqpath:n/a Error >>> Path:/hbase/table Error:KeeperErrorCode = NodeExists for /hbase/table >>> >>> >>> Hadoop seems to be up and running. >>> >>> last log in the datanode is >>> >>> 12/05/20 06:15:25 INFO datanode.DataBlockScanner: Verification succeeded >>> for blk_-3639294708473848144_3329 >>> 12/05/20 06:26:20 INFO datanode.DataBlockScanner: Verification succeeded >>> for blk_2502932128500788221_3413 >>> 12/05/20 06:26:20 INFO datanode.DataBlockScanner: Verification succeeded >>> for blk_3390059684225099859_3440 >>> 12/05/20 06:59:32 INFO datanode.DataNode: BlockReport of 157 blocks took 19 >>> msec to generate and 3 msecs for RPC and NN processing >>> 12/05/20 07:24:51 INFO datanode.DataBlockScanner: Verification succeeded >>> for blk_8954400942867609419_3363 >>> 12/05/20 07:55:51 INFO datanode.DataBlockScanner: Verification succeeded >>> for blk_-3650918785526360502_3387 >>> 12/05/20 07:59:33 INFO datanode.DataNode: BlockReport of 157 blocks took 20 >>> msec to generate and 3 msecs for RPC and NN processing >>> 12/05/20 08:07:25 INFO datanode.DataBlockScanner: Verification succeeded >>> for blk_786514597978592338_3336 >>> >>> I tried using hbase-explorer to view the tables but they all seem to down. >> >
