Hi,
On Fri, Jul 17, 2009 at 5:37 PM, Bogdan M. Maryniuk < bogdan.maryn...@gmail.com> wrote: > 2009/7/17 Mathias De Maré <mathias.dem...@gmail.com>: > > I'm using Hadoop 0.20.0 (semidistributed mode, or whatever it's called -- > I > > can't look up the name, since the documentation on the site seems to be > > down), and I'm experiencing a JobTracker crash every time I start Hadoop. > > What is output of "hadoop dfsadmin -report" ? bin/hadoop dfsadmin -report Configured Capacity: 99214172160 (92.4 GB) Present Capacity: 82849009664 (77.16 GB) DFS Remaining: 82848985088 (77.16 GB) DFS Used: 24576 (24 KB) DFS Used%: 0% Under replicated blocks: 0 Blocks with corrupt replicas: 0 Missing blocks: 0 ------------------------------------------------- Datanodes available: 1 (1 total, 0 dead) Name: 127.0.0.1:50010 Decommission Status : Normal Configured Capacity: 99214172160 (92.4 GB) DFS Used: 24576 (24 KB) Non DFS Used: 16365162496 (15.24 GB) DFS Remaining: 82848985088(77.16 GB) DFS Used%: 0% DFS Remaining%: 83.51% Last contact: Wed Jul 22 09:02:18 CEST 2009 > > > Doc site is not down: > http://hadoop.apache.org/common/docs/current/quickstart.html It was down when I checked :-) > > Also very carefully follow this: > > http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_(Single-Node_Cluster)<http://www.michael-noll.com/wiki/Running_Hadoop_On_Ubuntu_Linux_%28Single-Node_Cluster%29> > (since you're on 0.20, config bit differs, but that's nothing > serious). I went over the steps, and it looks like I did the same (only I didn't create a dedicated user and I didn't disable IPv6, since I can use it here). Oh, and I noticed one more thing: when I start Hadoop by running bin/start-dfs.sh, wait about 20 seconds for everything to get set up and then run bin/start-mapred.sh, everything works fine. With the JUnit tests and MiniMRCluster, there's the following error: 09/07/22 09:15:21 ERROR mapred.MiniMRCluster: Job tracker crashed java.lang.NullPointerException at java.io.File.<init>(File.java:222) at org.apache.hadoop.mapred.JobHistory.init(JobHistory.java:151) at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:1559) at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:174) at org.apache.hadoop.mapred.MiniMRCluster$JobTrackerRunner.run(MiniMRCluster.java:101) at java.lang.Thread.run(Thread.java:619) Mathias
