Hi,
      I am trying to one of the example programs included with Giraph 1.0.0but 
whatever I do I always get this same error:
FileNotFoundException: File _bsp/_defaultZkManagerDir/<job_number>/_zkServer 
does not exist.
   I am running Giraph 1.0.0, on hadoop-2.0.0-cdh4.1.1    I successfully ran 
'mvn clean install -Phadoop_2.0.0' with no problems.
This is my input file,
[root@localhost giraph]# hadoop fs -cat 
/user/root/input/tiny_graph.txt[0,0,[[1,1],[3,3]]][1,0,[[0,1],[2,2],[3,1]]][2,0,[[1,2],[4,4]]][3,0,[[0,3],[1,1],[4,4]]][4,0,[[3,4],[2,4]]]
   When I try to run an example program this is the output,
[root@localhost giraph]#  hadoop jar 
/usr/local/giraph/giraph-examples/target/giraph-examples-1.0.0-for-hadoop-2.0.0-alpha-jar-with-dependencies.jar
   org.apache.giraph.GiraphRunner 
org.apache.giraph.examples.SimpleShortestPathsVertex  -vif 
org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat -vip 
/user/root/input/tiny_graph.txt -of 
org.apache.giraph.io.formats.IdWithValueTextOutputFormat -op 
/user/root/output/shortestpaths -w 1 13/09/02 17:06:36 INFO 
utils.ConfigurationUtils: No edge input format specified. Ensure your 
InputFormat does not require one.13/09/02 17:06:36 WARN 
job.GiraphConfigurationValidator: Output format vertex index type is not 
known13/09/02 17:06:36 WARN job.GiraphConfigurationValidator: Output format 
vertex value type is not known13/09/02 17:06:36 WARN 
job.GiraphConfigurationValidator: Output format edge value type is not 
known13/09/02 17:06:36 INFO job.GiraphJob: run: Since checkpointing is disabled 
(default), do not allow any task retries (setting mapred.map.max.attempts = 0, 
old value = 4)13/09/02 17:06:37 WARN mapred.JobClient: Use GenericOptionsParser 
for parsing the arguments. Applications should implement Tool for the 
same.13/09/02 17:06:40 INFO mapred.JobClient: Running job: 
job_201308291126_002913/09/02 17:06:41 INFO mapred.JobClient:  map 0% reduce 
0%13/09/02 17:06:51 INFO mapred.JobClient: Job complete: 
job_201308291126_002913/09/02 17:06:51 INFO mapred.JobClient: Counters: 
613/09/02 17:06:51 INFO mapred.JobClient:   Job Counters 13/09/02 17:06:51 INFO 
mapred.JobClient:     Failed map tasks=113/09/02 17:06:51 INFO 
mapred.JobClient:     Launched map tasks=213/09/02 17:06:51 INFO 
mapred.JobClient:     Total time spent by all maps in occupied slots 
(ms)=1651513/09/02 17:06:51 INFO mapred.JobClient:     Total time spent by all 
reduces in occupied slots (ms)=013/09/02 17:06:51 INFO mapred.JobClient:     
Total time spent by all maps waiting after reserving slots (ms)=013/09/02 
17:06:51 INFO mapred.JobClient:     Total time spent by all reduces waiting 
after reserving slots (ms)=0[root@localhost giraph]# 

There are no errors but no output is produced, and in the Web UI I can see the 
2 map tasks have both failed.When I look in the log files this is the exception 
I see thrown,
java.lang.IllegalStateException: run: Caught an unrecoverable exception 
java.io.FileNotFoundException: File 
_bsp/_defaultZkManagerDir/job_201308291126_0029/_zkServer does not exist.   at 
org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:102)        at 
org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:645)      at 
org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)       at 
org.apache.hadoop.mapred.Child$4.run(Child.java:268) at 
java.security.AccessController.doPrivileged(Native Method)   at 
javax.security.auth.Subject.doAs(Subject.java:396)   at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332)
 at org.apache.hadoop.mapred.Child.main(Child.java:262)Caused by: 
java.lang.RuntimeException: java.io.FileNotFoundException: File 
_bsp/_defaultZkManagerDir/job_201308291126_0029/_zkServer does not exist.      
at 
org.apache.giraph.zk.ZooKeeperManager.onlineZooKeeperServers(ZooKeeperManager.java:790)
      at 
org.apache.giraph.graph.GraphTaskManager.startZooKeeperManager(GraphTaskManager.java
Every time I run a new job, it throws this same error. 
I have a copy of Zookeeper installed here,
[root@localhost giraph]# /usr/lib/zookeeper/bin/zkServer.sh  statusJMX enabled 
by defaultUsing config: /usr/lib/zookeeper/bin/../conf/zoo.cfgMode: 
standalone[root@localhost giraph]# 
          Any help would be greatly appreciated.
          Thank you,
Ken

                                                                                
  

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