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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Hbase unstable, master and regionservers crashes every night at ~ 00:07 UTC
Date Wed, 29 Oct 2014 12:38:12 GMT
Is this hbase snapshot or some other snapshot ?

Thanks

On Oct 29, 2014, at 5:05 AM, Ron van der Vegt <ron.van.der.vegt@openindex.io> wrote:

> Thanks all! We found the issue. Every night our server will create a snapshot backup.
This was causing the problems. Thanks again :)
> 
> 
> On wo, okt 29, 2014 at 6:25 , lars hofhansl <larsh@apache.org> wrote:
>> We had an issue similar to this for a while. Every Sunday between 1am and 6am we'd
experience ZK timeouts.Turned out it was the weekly RAID check across all our boxes that caused
ZK to timeout.
>> -- Lars
>>      From: Ron van der Vegt <ron.van.der.vegt@openindex.io>
>> To: user@hbase.apache.org  Sent: Tuesday, October 28, 2014 5:14 AM
>> Subject: Hbase unstable, master and regionservers crashes every night at ~ 00:07
UTC
>>   My setup is the following:
>> server1:
>> - master
>> - zookeeper
>> server2:
>> - zookeeper
>> server3:
>> - zookeeper
>> server 4 t/m 8
>> - regionserver
>> HBase: hbase-0.98.7-hadoop1
>> Zookeeper: zookeeper-3.4.6
>> hadoop: 1.2.1
>> Every night at aprox 00:07 UTC the master and all the regionservers will shutdown.
>> When I monitor server1 with munin, I don't see any extra load (io,memory,cpu) at
that time.
>> gc.log showed me that the garbage collection is also fast. See below the compromised
logs. I'm little bit out of options what is causing this. Does anyone have a clue what is
happening?
>> Thanks in advice,
>> Ron
>> Logs master server1
>> ===================
>> 2014-10-27 23:06:36,503 INFO [master:vps2008:60000-SendThread(141.105.120.103:2181)]
zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x1494ed899bd0211,
likely server has closed socket, closing socket connection and attempting reconnect
>> 2014-10-27 23:06:37,035 INFO [master:vps2008:60000-SendThread(141.105.120.102:2181)]
zookeeper.ClientCnxn: Opening socket connection to server 141.105.120.102/141.105.120.102:2181.
Will not attempt to authenticate using SASL (unknown error)
>> 2014-10-27 23:06:37,036 INFO [master:vps2008:60000-SendThread(141.105.120.102:2181)]
zookeeper.ClientCnxn: Socket connection established to 141.105.120.102/141.105.120.102:2181,
initiating session
>> 2014-10-27 23:06:37,037 INFO [master:vps2008:60000-SendThread(141.105.120.102:2181)]
zookeeper.ClientCnxn: Unable to read additional data from server sessionid 0x1494ed899bd0211,
likely server has closed socket, closing socket connection and attempting reconnect
>> 2014-10-27 23:06:37,583 INFO [master:vps2008:60000-SendThread(141.105.121.127:2181)]
zookeeper.ClientCnxn: Opening socket connection to server 141.105.121.127/141.105.121.127:2181.
Will not attempt to authenticate using SASL (unknown error)
>> ......
>> 2014-10-27 23:47:35,881 INFO [JvmPauseMonitor] util.JvmPauseMonitor: Detected pause
in JVM or host machine (eg GC): pause of approximately 1068ms
>> No GCs detected
>> 5x probarly every regionserver:
>> 2014-10-27 23:47:35,937 WARN [RpcServer.reader=9,port=60000] ipc.RpcServer: RpcServer.listener,port=60000:
count of bytes read: 0
>> java.io.IOException: Connection reset by peer
>>        at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
>>        at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
>>        at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
>>        at sun.nio.ch.IOUtil.read(IOUtil.java:197)
>>        at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
>>        at org.apache.hadoop.hbase.ipc.RpcServer.channelRead(RpcServer.java:2244)
>>        at org.apache.hadoop.hbase.ipc.RpcServer$Connection.readAndProcess(RpcServer.java:1423)
>>        at org.apache.hadoop.hbase.ipc.RpcServer$Listener.doRead(RpcServer.java:798)
>>        at org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader.doRunLoop(RpcServer.java:589)
>>        at org.apache.hadoop.hbase.ipc.RpcServer$Listener$Reader.run(RpcServer.java:564)
>>        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>        at java.lang.Thread.run(Thread.java:745)
>> .....
>> 2014-10-28 00:01:23,798 WARN [master:vps2008:60000.oldLogCleaner] zookeeper.RecoverableZooKeeper:
Possibly transient ZooKeeper, quorum=141.105.120.103:2181,141.105.120.102:2181,141.105.121.127:2181,
exception=org.apache.z
>> ookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session expired
for /hbase/replication/rs
>> 2014-10-28 00:01:23,798 ERROR [master:vps2008:60000.oldLogCleaner] zookeeper.RecoverableZooKeeper:
ZooKeeper getChildren failed after 4 attempts
>> 2014-10-28 00:01:23,799 WARN [master:vps2008:60000.oldLogCleaner] master.ReplicationLogCleaner:
Aborting ReplicationLogCleaner because Failed to get list of replicators
>> org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode = Session
expired for /hbase/replication/rs
>>        at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
>>        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
>>        at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
>>        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.getChildren(RecoverableZooKeeper.java:296)
>>        at org.apache.hadoop.hbase.zookeeper.ZKUtil.listChildrenNoWatch(ZKUtil.java:573)
>>        at org.apache.hadoop.hbase.replication.ReplicationStateZKBase.getListOfReplicators(ReplicationStateZKBase.java:79)
>>        at org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner.loadHLogsFromQueues(ReplicationLogCleaner.java:88)
>>        at org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner.getDeletableFiles(ReplicationLogCleaner.java:67)
>>        at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteFiles(CleanerChore.java:233)
>>        at org.apache.hadoop.hbase.master.cleaner.CleanerChore.checkAndDeleteEntries(CleanerChore.java:157)
>>        at org.apache.hadoop.hbase.master.cleaner.CleanerChore.chore(CleanerChore.java:124)
>>        at org.apache.hadoop.hbase.Chore.run(Chore.java:80)
>>        at java.lang.Thread.run(Thread.java:745)
>> .....
>> 2014-10-28 00:06:05,997 ERROR [MASTER_META_SERVER_OPERATIONS-vps2008:60000-0] handler.MetaServerShutdownHandler:
Caught M_META_SERVER_SHUTDOWN, count=1
>> java.io.IOException: failed log splitting for vps2060.directvps.nl,60020,1414414327187,
will retry
>>        at org.apache.hadoop.hbase.master.handler.MetaServerShutdownHandler.process(MetaServerShutdownHandler.java:84)
>>        at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:128)
>>        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>        at java.lang.Thread.run(Thread.java:745)
>> Caused by: java.io.IOException: error or interrupted while splitting logs in [hdfs://namenode.openindex.io:8020/hbase/WALs/vps2060.directvps.nl,60020,1414414327187-splitting]
Task = installed = 1 done = 0 error = 1
>>        at org.apache.hadoop.hbase.master.SplitLogManager.splitLogDistributed(SplitLogManager.java:359)
>>        at org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:416)
>>        at org.apache.hadoop.hbase.master.MasterFileSystem.splitMetaLog(MasterFileSystem.java:308)
>>        at org.apache.hadoop.hbase.master.MasterFileSystem.splitMetaLog(MasterFileSystem.java:299)
>>        at org.apache.hadoop.hbase.master.handler.MetaServerShutdownHandler.process(MetaServerShutdownHandler.java:77)
>>        ... 4 more
>> 2014-10-28 00:06:05,997 INFO [MASTER_META_SERVER_OPERATIONS-vps2008:60000-1] handler.MetaServerShutdownHandler:
Splitting hbase:meta logs for vps2060.directvps.nl,60020,1414414327187
>> 2014-10-28 00:06:06,006 INFO [MASTER_META_SERVER_OPERATIONS-vps2008:60000-1] master.SplitLogManager:
dead splitlog workers [vps2060.directvps.nl,60020,1414414327187]
>> 2014-10-28 00:06:06,021 INFO [main-EventThread] zookeeper.ClientCnxn: EventThread
shut down
>> 2014-10-28 00:06:06,021 INFO [master:vps2008:60000] zookeeper.ZooKeeper: Session:
0x1495400a0370000 closed
>> 2014-10-28 00:06:06,021 INFO [master:vps2008:60000] master.HMaster: HMaster main
thread exiting
>> 2014-10-28 00:06:06,022 ERROR [main] master.HMasterCommandLine: Master exiting
>> java.lang.RuntimeException: HMaster Aborted
>>        at org.apache.hadoop.hbase.master.HMasterCommandLine.startMaster(HMasterCommandLine.java:194)
>>        at org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:135)
>>        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>>        at org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:126)
>> Logs of zookeeper server1:
>> ==========================
>> 2014-10-27 23:06:36,562 [myid:2] - WARN [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:Follower@89]
- Exception when following the leader
>> java.net.SocketTimeoutException: Read timed out
>>        at java.net.SocketInputStream.socketRead0(Native Method)
>>        at java.net.SocketInputStream.read(SocketInputStream.java:152)
>>        at java.net.SocketInputStream.read(SocketInputStream.java:122)
>>        at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
>>        at java.io.BufferedInputStream.read(BufferedInputStream.java:254)
>>        at java.io.DataInputStream.readInt(DataInputStream.java:387)
>>        at org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:63)
>>        at org.apache.zookeeper.server.quorum.QuorumPacket.deserialize(QuorumPacket.java:83)
>>        at org.apache.jute.BinaryInputArchive.readRecord(BinaryInputArchive.java:103)
>>        at org.apache.zookeeper.server.quorum.Learner.readPacket(Learner.java:153)
>>        at org.apache.zookeeper.server.quorum.Follower.followLeader(Follower.java:85)
>>        at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:786)
>> 2014-10-27 23:06:36,629 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:Follower@166]
- shutdown called
>> java.lang.Exception: shutdown Follower
>>        at org.apache.zookeeper.server.quorum.Follower.shutdown(Follower.java:166)
>>        at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:790)
>> 2014-10-27 23:06:36,630 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FollowerZooKeeperServer@139]
- Shutting down
>> 2014-10-27 23:06:36,630 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:ZooKeeperServer@441]
- shutting down
>> 2014-10-27 23:06:36,630 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FollowerRequestProcessor@105]
- Shutting down
>> 2014-10-27 23:06:36,631 [myid:2] - INFO [FollowerRequestProcessor:2:FollowerRequestProcessor@95]
- FollowerRequestProcessor exited loop!
>> 2014-10-27 23:06:36,632 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:CommitProcessor@181]
- Shutting down
>> 2014-10-27 23:06:36,632 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FinalRequestProcessor@415]
- shutdown of request processor complete
>> 2014-10-27 23:06:36,632 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:SyncRequestProcessor@209]
- Shutting down
>> 2014-10-27 23:06:36,633 [myid:2] - INFO [SyncThread:2:SyncRequestProcessor@187] -
SyncRequestProcessor exited!
>> 2014-10-27 23:06:36,633 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:QuorumPeer@714]
- LOOKING
>> 2014-10-27 23:06:36,635 [myid:2] - INFO [CommitProcessor:2:CommitProcessor@150] -
CommitProcessor exited loop!
>> 2014-10-27 23:06:36,716 [myid:2] - INFO [QuorumPeer[myid=2]/0:0:0:0:0:0:0:0:2181:FileSnap@83]
- Reading snapshot /opt/zookeeper/data/version-2/snapshot.ed00000df4
>> 2014-10-27 23:06:36,774 [myid:2] - INFO [WorkerReceiver[myid=2]:FastLeaderElection@597]
- Notification: 1 (message format version), 1 (n.leader), 0xed00000e01 (n.zxid), 0xf9 (n.round),
LOOKING (n.state), 1 (n.sid), 0xed (
>> n.peerEpoch) LOOKING (my state)
>> 2014-10-27 23:06:36,816 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197]
- Accepted socket connection from /141.105.120.150:47142
>> 2014-10-27 23:06:36,844 [myid:2] - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@362]
- Exception causing close of session 0x0 due to java.io.IOException: ZooKeeperServer not running
>> 2014-10-27 23:06:36,845 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007]
- Closed socket connection for client /141.105.120.150:47142 (no session established for client)
>> .....
>> 2014-10-28 00:07:18,464 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@868]
- Client attempting to establish new session at /141.105.125.180:56530
>> 2014-10-28 00:07:18,468 [myid:2] - INFO [CommitProcessor:2:ZooKeeperServer@617] -
Established session 0x24954020e470268 with negotiated timeout 6000 for client /141.105.125.180:56530
>> 2014-10-28 00:07:18,483 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007]
- Closed socket connection for client /141.105.125.180:56530 which had sessionid 0x24954020e470268
>> 2014-10-28 00:07:18,632 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@197]
- Accepted socket connection from /178.21.116.224:45958
>> 2014-10-28 00:07:18,632 [myid:2] - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@822]
- Connection request from old client /178.21.116.224:45958; will be dropped if server is in
r-o mode
>> 2014-10-28 00:07:18,632 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:ZooKeeperServer@868]
- Client attempting to establish new session at /178.21.116.224:45958
>> 2014-10-28 00:07:18,636 [myid:2] - INFO [CommitProcessor:2:ZooKeeperServer@617] -
Established session 0x24954020e470269 with negotiated timeout 6000 for client /178.21.116.224:45958
>> 2014-10-28 00:07:18,650 [myid:2] - WARN [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@357]
- caught end of stream exception
>> EndOfStreamException: Unable to read additional data from client sessionid 0x24954020e470269,
likely client has closed socket
>>        at org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:228)
>>        at org.apache.zookeeper.server.NIOServerCnxnFactory.run(NIOServerCnxnFactory.java:208)
>>        at java.lang.Thread.run(Thread.java:745)
>> 2014-10-28 00:07:18,651 [myid:2] - INFO [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1007]
- Closed socket connection for client /178.21.116.224:45958 which had sessionid 0x24954020e470269
>> Gc log server1 (date and time may differ, but same result is shown at time of problem)
>> ======================================================================================
>> 2014-10-23T07:39:02.597+0000: 0.334: [GC2014-10-23T07:39:02.597+0000: 0.334: [ParNew:
4288K->512K(4800K), 0.0068790 secs] 4288K->1288K(15424K), 0.0069880 secs] [Times: user=0.01
sys=0.00, real=0.01 secs] 2014-10-23T07:39:02.676+0000: 0.413: [GC2014-10-23T07:39:02.676+0000:
0.413: [ParNew: 4800K->511K(4800K), 0.0136860 secs] 5576K->2274K(15424K), 0.0137620
secs] [Times: user=0.01 sys=0.01, real=0.01 secs] 2014-10-23T07:39:02.759+0000: 0.496: [GC2014-10-23T07:39:02.759+0000:
0.496: [ParNew: 4790K->511K(4800K), 0.0039330 secs] 6553K->2582K(15424K), 0.0040040
secs] [Times: user=0.01 sys=0.00, real=0.01 secs] ...
>> 2014-10-23T07:39:03.621+0000: 1.358: [GC2014-10-23T07:39:03.621+0000: 1.358: [ParNew:
4799K->512K(4800K), 0.0022680 secs] 9184K->5281K(15424K), 0.0023360 secs] [Times: user=0.00
sys=0.00, real=0.01 secs] 2014-10-23T07:39:03.803+0000: 1.540: [GC2014-10-23T07:39:03.803+0000:
1.540: [ParNew: 4800K->512K(4800K), 0.0018700 secs] 9569K->5586K(15424K), 0.0019370
secs] [Times: user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:39:03.915+0000: 1.652: [GC2014-10-23T07:39:03.915+0000:
1.652: [ParNew: 4800K->512K(4800K), 0.0019160 secs] 9874K->6010K(15424K), 0.0019840
secs] [Times: user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:39:03.918+0000: 1.654: [GC
[1 CMS-initial-mark: 5498K(10624K)] 6010K(15424K), 0.0041480 secs] [Times: user=0.00 sys=0.00,
real=0.01 secs] 2014-10-23T07:39:03.922+0000: 1.659: [CMS-concurrent-mark-start]
>> 2014-10-23T07:39:03.964+0000: 1.701: [CMS-concurrent-mark: 0.038/0.042 secs] [Times:
user=0.09 sys=0.00, real=0.04 secs] 2014-10-23T07:39:03.964+0000: 1.701: [CMS-concurrent-preclean-start]
>> 2014-10-23T07:39:03.965+0000: 1.702: [CMS-concurrent-preclean: 0.001/0.001 secs]
[Times: user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:39:03.971+0000: 1.708: [GC[YG occupancy:
1582 K (4800 K)]2014-10-23T07:39:03.971+0000: 1.708: [Rescan (parallel) , 0.0013900 secs]2014-10-23T07:39:03.972+0000:
1.709: [weak refs processing, 0.0000240 secs]2014-10-23T07:39:03.973+0000: 1.709: [scrub string
table, 0.0001890 secs] [1 CMS-remark: 5498K(10624K)] 7081K(15424K), 0.0016880 secs] [Times:
user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:39:03.973+0000: 1.710: [CMS-concurrent-sweep-start]
>> 2014-10-23T07:39:03.974+0000: 1.711: [CMS-concurrent-sweep: 0.001/0.001 secs] [Times:
user=0.01 sys=0.00, real=0.00 secs] 2014-10-23T07:39:03.974+0000: 1.711: [CMS-concurrent-reset-start]
>> 2014-10-23T07:39:04.086+0000: 1.823: [GC2014-10-23T07:39:04.086+0000: 1.823: [ParNew:
4800K->512K(4800K), 0.0016370 secs] 7380K->3450K(15424K), 0.0017180 secs] [Times: user=0.01
sys=0.00, real=0.00 secs] 2014-10-23T07:39:04.146+0000: 1.883: [CMS-concurrent-reset: 0.170/0.172
secs] [Times: user=0.11 sys=0.16, real=0.17 secs] 2014-10-23T07:39:04.194+0000: 1.931: [GC2014-10-23T07:39:04.194+0000:
1.931: [ParNew: 4799K->512K(4800K), 0.0015060 secs] 7737K->3610K(15424K), 0.0015850
secs] [Times: user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:39:04.347+0000: 2.084: [GC2014-10-23T07:39:04.347+0000:
2.084: [ParNew: 4800K->511K(4800K), 0.0019550 secs] 7898K->3849K(15424K), 0.0020250
secs] [Times: user=0.01 sys=0.00, real=0.00 secs] 2014-10-23T07:39:04.430+0000: 2.167: [GC2014-10-23T07:39:04.431+0000:
2.167: [ParNew: 4799K->495K(4800K), 0.0021720 secs] 8137K->3981K(15424K), 0.0022710
secs] [Times: user=0.01 sys=0.00, real=0.01 secs]
>> ....
>> secs] 2014-10-23T07:40:05.961+0000: 63.698: [GC2014-10-23T07:40:05.961+0000: 63.698:
[ParNew: 4649K->511K(4800K), 0.0028340 secs] 13309K->9479K(15424K), 0.0029510 secs]
[Times: user=0.01 sys=0.00, real=0.00 secs] 2014-10-23T07:40:14.198+0000: 71.935: [GC2014-10-23T07:40:14.198+0000:
71.935: [ParNew: 4799K->511K(4800K), 0.0029840 secs] 13767K->9895K(15424K), 0.0030750
secs] [Times: user=0.01 sys=0.00, real=0.00 secs] 2014-10-23T07:40:14.289+0000: 72.025: [GC2014-10-23T07:40:14.289+0000:
72.026: [ParNew: 4799K->512K(4800K), 0.0023430 secs] 14183K->10375K(15424K), 0.0024230
secs] [Times: user=0.01 sys=0.00, real=0.01 secs] 2014-10-23T07:40:14.291+0000: 72.028: [GC
[1 CMS-initial-mark: 9863K(10624K)] 10383K(15424K), 0.0009020 secs] [Times: user=0.00 sys=0.00,
real=0.00 secs] 2014-10-23T07:40:14.292+0000: 72.029: [CMS-concurrent-mark-start]
>> 2014-10-23T07:40:14.322+0000: 72.059: [CMS-concurrent-mark: 0.030/0.030 secs] [Times:
user=0.06 sys=0.00, real=0.03 secs] 2014-10-23T07:40:14.322+0000: 72.059: [CMS-concurrent-preclean-start]
>> 2014-10-23T07:40:14.322+0000: 72.059: [CMS-concurrent-preclean: 0.000/0.000 secs]
[Times: user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:40:14.322+0000: 72.059: [CMS-concurrent-abortable-preclean-start]
>> CMS: abort preclean due to time 2014-10-23T07:40:19.353+0000: 77.090: [CMS-concurrent-abortable-preclean:
0.089/5.030 secs] [Times: user=0.11 sys=0.01, real=5.03 secs] 2014-10-23T07:40:19.353+0000:
77.090: [GC[YG occupancy: 3651 K (4800 K)]2014-10-23T07:40:19.354+0000: 77.091: [Rescan (parallel)
, 0.0020850 secs]2014-10-23T07:40:19.356+0000: 77.093: [weak refs processing, 0.0001570 secs]2014-10-23T07:40:19.356+0000:
77.093: [scrub string table, 0.0004000 secs] [1 CMS-remark: 9863K(10624K)] 13514K(15424K),
0.0034860 secs] [Times: user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:40:19.357+0000:
77.094: [CMS-concurrent-sweep-start]
>> 2014-10-23T07:40:19.360+0000: 77.097: [CMS-concurrent-sweep: 0.003/0.003 secs] [Times:
user=0.00 sys=0.00, real=0.00 secs] 2014-10-23T07:40:19.361+0000: 77.097: [CMS-concurrent-reset-start]
>> 2014-10-23T07:40:19.362+0000: 77.099: [CMS-concurrent-reset: 0.001/0.001 secs] [Times:
user=0.00 sys=0.00, real=0.01 secs] 2014-10-23T07:41:56.874+0000: 174.611: [GC2014-10-23T07:41:56.875+0000:
174.611: [ParNew: 4800K->512K(4800K), 0.0021740 secs] 10761K->6828K(15424K), 0.0022740
secs] [Times: user=0.01 sys=0.00, real=0.00 secs] 2014-10-23T07:47:21.160+0000: 498.897: [GC2014-10-23T07:47:21.160+0000:
498.897: [ParNew: 4800K->286K(4800K), 0.0025590 secs] 11116K->7045K(15424K), 0.0026680
secs] [Times: user=0.00 sys=0.00, real=0.01 secs] ...
>> 2014-10-23T08:39:29.672+0000: 3627.409: [GC2014-10-23T08:39:29.672+0000: 3627.409:
[ParNew: 4705K->512K(4800K), 0.0045100 secs] 12027K->8045K(15424K), 0.0046410 secs]
[Times: user=0.01 sys=0.00, real=0.00 secs] 2014-10-23T08:45:08.685+0000: 3966.422: [GC2014-10-23T08:45:08.686+0000:
3966.422: [ParNew: 4800K->478K(4800K), 0.0035990 secs] 12333K->8609K(15424K), 0.0036800
secs] [Times: user=0.01 sys=0.00, real=0.00 secs] Heap
>> par new generation total 4800K, used 827K [0x00000000b7200000, 0x00000000b7730000,
0x00000000c1860000)
>>  eden space 4288K, 8% used [0x00000000b7200000, 0x00000000b72573b0, 0x00000000b7630000)
>>  from space 512K, 93% used [0x00000000b76b0000, 0x00000000b7727980, 0x00000000b7730000)
>>  to space 512K, 0% used [0x00000000b7630000, 0x00000000b7630000, 0x00000000b76b0000)
>> concurrent mark-sweep generation total 10624K, used 8130K [0x00000000c1860000, 0x00000000c22c0000,
0x00000000f5a00000)
>> concurrent-mark-sweep perm gen total 50636K, used 30752K [0x00000000f5a00000, 0x00000000f8b73000,
0x0000000100000000)
> 

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