Before posting question indeed I did follow the wiki page http://wiki.apache.org/hadoop/FAQ#What_does_.22file_could_only_be_replicated_to_0_nodes.2C_instead_of_1.22_mean.3F http://wiki.apache.org/hadoop/HowToSetupYourDevelopmentEnvironment
checking local disk space (*), etc. but none of those suggestions work. So I appreciate any advice. *: df -kh shows "/dev/sda1 9.4G 2.3G 6.7G 25% /" only 25% disk space is used. On Fri, Jul 15, 2011 at 11:39 AM, Thomas Anderson <t.dt.aander...@gmail.com> wrote: > I have fresh hadoop 0.20.2 installed on virtualbox 4.0.8 with jdk > 1.6.0_26. The problem is when trying to put a file to hdfs, it throws > error `org.apache.hadoop.ipc.RemoteException: java.io.IOException: > File /path/to/file could only be replicated to 0 nodes, instead of 1'; > however, there is no problem to create a folder, as the command ls > print the result > > Found 1 items > drwxr-xr-x - user supergroup 0 2011-07-15 11:09 /user/user/test > > I also try with flushing firewall (remove all iptables restriction), > but the error message is still thrown out when uploading (hadoop fs > -put /tmp/x test) a file from local fs. > > The name node log shows > > 2011-07-15 10:42:43,491 INFO org.apache.hadoop.hdfs.StateChange: > BLOCK* NameSystem.registerDatanode: node registration from > aaa.bbb.ccc.ddd.22:50010 storage DS-929017105-aaa.bbb.ccc.22-50010-13 > 10697763488 > 2011-07-15 10:42:43,495 INFO org.apache.hadoop.net.NetworkTopology: > Adding a new node: /default-rack/aaa.bbb.ccc.22:50010 > 2011-07-15 10:42:44,169 INFO org.apache.hadoop.hdfs.StateChange: > BLOCK* NameSystem.registerDatanode: node registration from > aaa.bbb.ccc.35:50010 storage DS-884574392-aaa.bbb.ccc.35-50010-13 > 10697764164 > 2011-07-15 10:42:44,170 INFO org.apache.hadoop.net.NetworkTopology: > Adding a new node: /default-rack/aaa.bbb.ccc.35:50010 > 2011-07-15 10:42:44,507 INFO org.apache.hadoop.hdfs.StateChange: > BLOCK* NameSystem.registerDatanode: node registration from > aaa.bbb.ccc.ddd.11:50010 storage DS-1537583073-aaa.bbb.ccc.11-50010-1 > 310697764488 > 2011-07-15 10:42:44,507 INFO org.apache.hadoop.net.NetworkTopology: > Adding a new node: /default-rack/aaa.bbb.ccc.11:50010 > 2011-07-15 10:42:45,796 INFO org.apache.hadoop.hdfs.StateChange: > BLOCK* NameSystem.registerDatanode: node registration from > 140.127.220.25:50010 storage DS-1500589162-aaa.bbb.ccc.25-50010-1 > 310697765386 > 2011-07-15 10:42:45,797 INFO org.apache.hadoop.net.NetworkTopology: > Adding a new node: /default-rack/aaa.bbb.ccc.25:50010 > > And all datanodes have similar message as below: > > 2011-07-15 10:42:46,562 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: using > BLOCKREPORT_INTERVAL of 3600000msec Initial delay: 0msec > 2011-07-15 10:42:47,163 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 0 > blocks got processed in 3 msecs > 2011-07-15 10:42:47,187 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: Starting Periodic > block scanner. > 2011-07-15 11:19:42,931 INFO > org.apache.hadoop.hdfs.server.datanode.DataNode: BlockReport of 0 > blocks got processed in 1 msecs > > Command `hadoop fsck /` displays > > Status: HEALTHY > Total size: 0 B > Total dirs: 3 > Total files: 0 (Files currently being written: 1) > Total blocks (validated): 0 > Minimally replicated blocks: 0 > Over-replicated blocks: 0 > Under-replicated blocks: 0 > Mis-replicated blocks: 0 > Default replication factor: 3 > Average block replication: 0.0 > Corrupt blocks: 0 > Missing replicas: 0 > Number of data-nodes: 4 > > The setting in conf include: > > - Master node: > core-site.xml > <property> > <name>fs.default.name</name> > <value>hdfs://lab01:9000/</value> > </property> > > hdfs-site.xml > <property> > <name>dfs.replication</name> > <value>3</value> > </property> > > -Slave nodes: > core-site.xml > <property> > <name>fs.default.name</name> > <value>hdfs://lab01:9000/</value> > </property> > > hdfs-site.xml > <property> > <name>dfs.replication</name> > <value>3</value> > </property> > > Do I missing any configuration? Or any place that I can check? > > Thanks. >
