Hi,
I am trying to run this workflow which uses Giraph.
I am able to succesfully run the Giraph job when I use lesser no. of mappers  
and less data. But it fails for more mappers.
This is what the logs say for master and worker nodes:

Master Node:

2012-11-29 00:01:10,235 INFO [main] org.apache.giraph.zk.ZooKeeperManager: 
onlineZooKeeperServers: Connected to 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681!
2012-11-29 00:01:10,235 INFO [main] org.apache.giraph.zk.ZooKeeperManager: 
onlineZooKeeperServers: Creating my filestamp 
_bsp/_defaultZkManagerDir/_zkServer/gsta31113.tan.ygrid.yahoo.com 3
2012-11-29 00:01:10,241 INFO [main] org.apache.giraph.graph.GraphMapper: setup: 
Starting up BspServiceMaster (master thread)...
2012-11-29 00:01:10,257 INFO [main] org.apache.giraph.graph.BspService: 
BspService: Connecting to ZooKeeper with job job_1353148790244_114419, 3 on 
gsta31113.tan.ygrid.yahoo.com:24681
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:zookeeper.version=3.4.4-1386507, built on 09/17/2012 08:33 GMT
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:host.name=gsta31113.tan.ygrid.yahoo.com
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.version=1.6.0_21
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.vendor=Sun Microsystems Inc.
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.home=/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.class.path= {really long class path}
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.library.path=/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre/lib/i386/server:/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre/lib/i386:/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre/../lib/i386:/grid/2/tmp/yarn-local/usercache/nova_sln/appcache/application_1353148790244_114419/container_1353148790244_114419_01_000009:/home/gs/hadoop/current/lib/native/Linux-i386-32:/usr/java/packages/lib/i386:/lib:/usr/lib
2012-11-29 00:01:10,278 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.io.tmpdir=/grid/2/tmp/yarn-local/usercache/nova_sln/appcache/application_1353148790244_114419/container_1353148790244_114419_01_000009/tmp
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.compiler=
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:os.name=Linux
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:os.arch=i386
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:os.version=2.6.18-238.19.1.el5.YAHOO.20111028
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:user.name=nova_sln
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:user.home=/homes/nova_sln
2012-11-29 00:01:10,279 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:user.dir=/grid/2/tmp/yarn-local/usercache/nova_sln/appcache/application_1353148790244_114419/container_1353148790244_114419_01_000009
2012-11-29 00:01:10,280 INFO [main] org.apache.zookeeper.ZooKeeper: Initiating 
client connection, connectString=gsta31113.tan.ygrid.yahoo.com:24681 
sessionTimeout=60000 watcher=org.apache.giraph.graph.BspServiceMaster@16f70a4
2012-11-29 00:01:10,304 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Opening socket connection to server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681. Will not attempt to 
authenticate using SASL (Unable to locate a login configuration)
2012-11-29 00:01:10,305 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Socket connection established to 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681, initiating session
2012-11-29 00:01:10,331 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Session establishment complete on server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681, sessionid = 
0x13b497783e40000, negotiated timeout = 600000
2012-11-29 00:01:10,333 INFO [main-EventThread] 
org.apache.giraph.graph.BspService: process: Asynchronous connection complete.
2012-11-29 00:01:10,335 INFO [main] org.apache.giraph.graph.GraphMapper: map: 
No need to do anything when not a worker
2012-11-29 00:01:10,335 INFO [main] org.apache.giraph.graph.GraphMapper: 
cleanup: Starting for MASTER_ZOOKEEPER_ONLY
2012-11-29 00:01:10,396 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.BspServiceMaster: becomeMaster: First child is 
'/_hadoopBsp/job_1353148790244_114419/_masterElectionDir/gsta31113.tan.ygrid.yahoo.com_30000000000'
 and my bid is 
'/_hadoopBsp/job_1353148790244_114419/_masterElectionDir/gsta31113.tan.ygrid.yahoo.com_30000000000'
2012-11-29 00:01:10,403 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.BspServiceMaster: becomeMaster: I am now the master!
2012-11-29 00:01:10,423 INFO [main-EventThread] 
org.apache.giraph.graph.BspService: process: applicationAttemptChanged signaled
2012-11-29 00:01:10,440 WARN [main-EventThread] 
org.apache.giraph.graph.BspService: process: Unknown and unprocessed event 
(path=/_hadoopBsp/job_1353148790244_114419/_applicationAttemptsDir/0/_superstepDir,
 type=NodeChildrenChanged, state=SyncConnected)
2012-11-29 00:01:17,475 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.BspServiceMaster: checkWorkers: Only found 1 responses 
of 60 needed to start superstep -1.  Sleeping for 5000 msecs and used 0 of 60 
attempts.
2012-11-29 00:01:28,742 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.hadoop.mapreduce.lib.input.FileInputFormat: Total input paths to 
process : 60
2012-11-29 00:01:28,760 WARN [org.apache.giraph.graph.MasterThread] 
org.apache.hadoop.io.compress.snappy.LoadSnappy: Snappy native library not 
loaded
2012-11-29 00:01:28,887 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.BspServiceMaster: generateInputSplits: Got 240 input 
splits for 60 workers
2012-11-29 00:01:28,887 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.BspServiceMaster: createInputSplits: Starting to write 
input split data to zookeeper with 1 threads
2012-11-29 00:01:29,228 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.BspServiceMaster: createInputSplits: Done writing input 
split data to zookeeper
2012-11-29 00:01:29,348 INFO [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.partition.HashMasterPartitioner: 
createInitialPartitionOwners: Creating 3600, default would have been 3600 
partitions.
2012-11-29 00:01:29,348 WARN [org.apache.giraph.graph.MasterThread] 
org.apache.giraph.graph.partition.HashMasterPartitioner: 
createInitialPartitionOwners: Reducing the partitionCount to 2995 from 3600
2012-11-29 00:08:09,352 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Client session timed out, have not heard from 
server in 400000ms for sessionid 0x13b497783e40000, closing socket connection 
and attempting reconnect
2012-11-29 00:08:09,454 WARN [main-EventThread] 
org.apache.giraph.graph.BspService: process: Disconnected from ZooKeeper (will 
automatically try to recover) WatchedEvent state:Disconnected type:None 
path:null
2012-11-29 00:08:10,645 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Opening socket connection to server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681. Will not attempt to 
authenticate using SASL (Unable to locate a login configuration)
2012-11-29 00:08:10,645 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Socket connection established to 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681, initiating session
2012-11-29 00:08:10,648 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Session establishment complete on server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681, sessionid = 
0x13b497783e40000, negotiated timeout = 600000
2012-11-29 00:08:10,649 INFO [main-EventThread] 
org.apache.giraph.graph.BspService: process: Asynchronous connection complete.
2012-11-29 00:31:51,715 INFO [Thread-11] org.apache.giraph.zk.ZooKeeperManager: 
run: Shutdown hook started.
2012-11-29 00:31:51,715 WARN [Thread-11] org.apache.giraph.zk.ZooKeeperManager: 
onlineZooKeeperServers: Forced a shutdown hook kill of the ZooKeeper process.
2012-11-29 00:31:52,094 INFO [Thread-11] org.apache.giraph.zk.ZooKeeperManager: 
onlineZooKeeperServers: ZooKeeper process exited with 143 (note that 143 
typically means killed).

2012-11-29 00:31:52,093 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Unable to read additional data from server 
sessionid 0x13b497783e40000, likely server has closed socket, closing socket 
connection and attempting reconnect

Failed Worker Node:

2012-11-29 00:01:21,666 INFO [main] org.apache.giraph.zk.ZooKeeperManager: 
onlineZooKeeperServers: Got [gsta31113.tan.ygrid.yahoo.com] 1 hosts from 1 
ready servers when 1 required (polling period is 3000) on attempt 0
2012-11-29 00:01:21,666 INFO [main] org.apache.giraph.graph.GraphMapper: setup: 
Starting up BspServiceWorker...
2012-11-29 00:01:21,679 INFO [main] org.apache.giraph.graph.BspService: 
BspService: Connecting to ZooKeeper with job job_1353148790244_114419, 4 on 
gsta31113.tan.ygrid.yahoo.com:24681
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:zookeeper.version=3.4.4-1386507, built on 09/17/2012 08:33 GMT
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:host.name=gsta31090.tan.ygrid.yahoo.com
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.version=1.6.0_21
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.vendor=Sun Microsystems Inc.
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.home=/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.class.path={really long class path}
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.library.path=/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre/lib/i386/server:/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre/lib/i386:/home/Releases/gridjdk-1.6.0_21.1011192346-20110120-000/share/gridjdk-1.6.0_21/jre/../lib/i386:/grid/2/tmp/yarn-local/usercache/nova_sln/appcache/application_1353148790244_114419/container_1353148790244_114419_01_000120:/home/gs/hadoop/current/lib/native/Linux-i386-32:/usr/java/packages/lib/i386:/lib:/usr/lib
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.io.tmpdir=/grid/2/tmp/yarn-local/usercache/nova_sln/appcache/application_1353148790244_114419/container_1353148790244_114419_01_000120/tmp
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:java.compiler=
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:os.name=Linux
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:os.arch=i386
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:os.version=2.6.18-238.19.1.el5.YAHOO.20111028
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:user.name=nova_sln
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:user.home=/homes/nova_sln
2012-11-29 00:01:21,694 INFO [main] org.apache.zookeeper.ZooKeeper: Client 
environment:user.dir=/grid/2/tmp/yarn-local/usercache/nova_sln/appcache/application_1353148790244_114419/container_1353148790244_114419_01_000120
2012-11-29 00:01:21,695 INFO [main] org.apache.zookeeper.ZooKeeper: Initiating 
client connection, connectString=gsta31113.tan.ygrid.yahoo.com:24681 
sessionTimeout=60000 watcher=org.apache.giraph.graph.BspServiceWorker@1c8fb4b
2012-11-29 00:01:21,737 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Opening socket connection to server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681. Will not attempt to 
authenticate using SASL (Unable to locate a login configuration)
2012-11-29 00:01:21,737 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Socket connection established to 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681, initiating session
2012-11-29 00:01:21,744 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Session establishment complete on server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681, sessionid = 
0x13b497783e40017, negotiated timeout = 600000
2012-11-29 00:01:21,747 INFO [main-EventThread] 
org.apache.giraph.graph.BspService: process: Asynchronous connection complete.
2012-11-29 00:01:21,754 WARN [main] org.apache.hadoop.conf.Configuration: 
mapred.map.tasks is deprecated. Instead, use mapreduce.job.maps
2012-11-29 00:01:22,027 INFO [main] 
org.apache.giraph.comm.SecureRPCCommunications: getRPCServer: Added jobToken 
Ident: 18 6a 6f 62 5f 31 33 35 33 31 34 38 37 39 30 32 34 34 5f 31 31 34 34 31 
39, Kind: mapreduce.job, Service: job_1353148790244_114419
2012-11-29 00:01:22,608 INFO [Socket Reader #1 for port 32504] 
org.apache.hadoop.ipc.Server: Starting Socket Reader #1 for port 32504
2012-11-29 00:01:22,609 INFO [Socket Reader #2 for port 32504] 
org.apache.hadoop.ipc.Server: Starting Socket Reader #2 for port 32504
2012-11-29 00:01:22,609 INFO [Socket Reader #3 for port 32504] 
org.apache.hadoop.ipc.Server: Starting Socket Reader #3 for port 32504
2012-11-29 00:01:22,609 INFO [Socket Reader #4 for port 32504] 
org.apache.hadoop.ipc.Server: Starting Socket Reader #4 for port 32504
2012-11-29 00:01:22,610 INFO [Socket Reader #5 for port 32504] 
org.apache.hadoop.ipc.Server: Starting Socket Reader #5 for port 32504
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: dfs.namenode.name.dir;  
Ignoring.
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: 
hadoop.security.token.service.use_ip;  Ignoring.
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: 
mapreduce.job.end-notification.max.retry.interval;  Ignoring.
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: 
mapreduce.admin.map.child.java.opts;  Ignoring.
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: 
mapreduce.job.end-notification.max.attempts;  Ignoring.
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: 
yarn.app.mapreduce.am.job.client.port-range;  Ignoring.
2012-11-29 00:01:22,662 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: 
mapreduce.admin.reduce.child.java.opts;  Ignoring.
2012-11-29 00:01:22,663 WARN [main] org.apache.hadoop.conf.Configuration: 
job.xml:an attempt to override final parameter: hadoop.tmp.dir;  Ignoring.
2012-11-29 00:01:22,691 INFO [IPC Server Responder] 
org.apache.hadoop.ipc.Server: IPC Server Responder: starting
2012-11-29 00:01:22,691 INFO [IPC Server listener on 32504] 
org.apache.hadoop.ipc.Server: IPC Server listener on 32504: starting
2012-11-29 00:01:22,707 INFO [main] 
org.apache.giraph.comm.BasicRPCCommunications: BasicRPCCommunications: Started 
RPC communication server: gsta31090.tan.ygrid.yahoo.com/10.216.123.42:32504 
with 61 handlers and 59 flush threads on bind attempt 0
2012-11-29 00:01:22,707 INFO [main] org.apache.giraph.graph.BspServiceWorker: 
BspServiceWorker: maxVerticesPerTransfer = 10000
2012-11-29 00:01:22,707 INFO [main] org.apache.giraph.graph.BspServiceWorker: 
BspServiceWorker: maxEdgesPerTransfer = 80000 useNetty = false
2012-11-29 00:01:22,716 INFO [main] org.apache.giraph.graph.GraphMapper: setup: 
Registering health of this worker...
2012-11-29 00:01:22,733 INFO [main] org.apache.giraph.graph.BspService: 
getJobState: Job state already exists 
(/_hadoopBsp/job_1353148790244_114419/_masterJobState)
2012-11-29 00:01:22,738 INFO [main] org.apache.giraph.graph.BspService: 
getApplicationAttempt: Node 
/_hadoopBsp/job_1353148790244_114419/_applicationAttemptsDir already exists!
2012-11-29 00:01:22,741 INFO [main] org.apache.giraph.graph.BspService: 
getApplicationAttempt: Node 
/_hadoopBsp/job_1353148790244_114419/_applicationAttemptsDir already exists!
2012-11-29 00:01:22,747 INFO [main] org.apache.giraph.graph.BspServiceWorker: 
registerHealth: Created my health node for attempt=0, superstep=-1 with 
/_hadoopBsp/job_1353148790244_114419/_applicationAttemptsDir/0/_superstepDir/-1/_workerHealthyDir/gsta31090.tan.ygrid.yahoo.com_4
 and workerInfo= Worker(hostname=gsta31090.tan.ygrid.yahoo.com, MRtaskID=4, 
port=32504)
2012-11-29 00:19:17,005 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 24917 may have 
finished in the interim.
2012-11-29 00:19:17,005 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 24921 may have 
finished in the interim.
2012-11-29 00:19:17,006 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 24922 may have 
finished in the interim.
2012-11-29 00:27:37,081 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 25739 may have 
finished in the interim.
2012-11-29 00:27:37,081 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 25743 may have 
finished in the interim.
2012-11-29 00:27:37,081 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 25744 may have 
finished in the interim.
2012-11-29 00:28:07,200 INFO [communication thread] 
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree: The process 25752 may have 
finished in the interim.
2012-11-29 00:31:52,091 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Unable to read additional data from server 
sessionid 0x13b497783e40017, likely server has closed socket, closing socket 
connection and attempting reconnect
2012-11-29 00:31:52,193 WARN [main-EventThread] 
org.apache.giraph.graph.BspService: process: Disconnected from ZooKeeper (will 
automatically try to recover) WatchedEvent state:Disconnected type:None 
path:null
2012-11-29 00:31:53,478 INFO 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Opening socket connection to server 
gsta31113.tan.ygrid.yahoo.com/10.216.124.59:24681. Will not attempt to 
authenticate using SASL (Unable to locate a login configuration)
2012-11-29 00:31:53,480 WARN 
[main-SendThread(gsta31113.tan.ygrid.yahoo.com:24681)] 
org.apache.zookeeper.ClientCnxn: Session 0x13b497783e40017 for server null, 
unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
        at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
        at 
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)
        at 
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:348)
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
2012-11-29 00:31:53,584 ERROR [main] org.apache.giraph.graph.BspServiceWorker: 
unregisterHealth: Got failure, unregistering health on 
/_hadoopBsp/job_1353148790244_114419/_applicationAttemptsDir/0/_superstepDir/-1/_workerHealthyDir/gsta31090.tan.ygrid.yahoo.com_4
 on superstep -1


Please let me know if I am missing on some configurations.


Thanks,

Tripti.

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