Is this the same cluster you were unable to get the MDS out of "creating" on? Hadoop won't work without an active MDS since it can't mount the filesystem. :) The reason your MDS isn't starting up is complicated; look for an email on that shortly... -Greg On Saturday, March 24, 2012 at 12:18 AM, lixiaobing10@xxxxxxxxxxxxxxxxxx wrote: > Hi ceph-devel, > > I installed ceph-0.44, which can be mounted by ceph-fuse correctly. Besides, hadoop-0.20.205.0 patched with hadoop-0.20.205.0-cephfs1.patch can run correctly too, but with hdfs as the underlying fs. (refered to http://ceph.newdream.net/wiki/Hadoop_FileSystem) > > However, when I let hadoop use ceph as the fs, I encountered this problem: > > 12/03/24 14:45:47 INFO ceph.CephFileSystem: initialize:Ceph initialization arguments: CephFSInterface -k /data/keyring.mds.0 -n client.admin --auth-supported=cephx -m 192.168.122.201:6789 --client-readahead-max-periods=1 > 12/03/24 14:45:47 FATAL ceph.CephFileSystem: initialize:Ceph initialization failed! > Bad connection to FS. command aborted. exception: Ceph initialization failed! > > I have traced the source code from java-side to ceph-side, and found the connection between them failed to establish. But I have no idea about the real cause. Could someone give me any suggestion on this problem? > > Additionally, hadoop-0.20.205.0 patched with hadoop-0.20.205.0-cephfs1.patch can work with ceph-0.20.1, although it would crashed during reduce task phase, and that is why I turned to the latest ceph version. > > Thanks for your attention! > > Best, > Xiaobing > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx (mailto:majordomo@xxxxxxxxxxxxxxx) > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
