Hi Alex, Kartheek, Thanks for response. I did a clean fresh setup on a new machine CentOS- 64bit currently with open-jdk installed and able to resolve the previous issue of No ClassDefinition found error. http://wiki.apache.org/hadoop/MountableHDFS: Steps worked properly till "Installing Step" and I am able to mount HDFS on /mnt through fuse_dfs_wrapper.sh script. When I try to follow the "Deploying Step", I get the following error :
[root@slave ~]# mount /mnt port=54310,server=slave fuse-dfs didn't recognize /mnt,-2 fuse-dfs ignoring option -oallow_other fuse-dfs ignoring option -ousetrash fuse-dfs ignoring option dev fuse-dfs ignoring option suid fuse: unknown option `-oallow_other' I searched this and found out "http://sourceforge.net/apps/mediawiki/fuse/index.php?title=FAQ#Why_does_fusermount_fail_with_an_Unknown_option_error.3F"; I tried removing fusermount file from /bin and also removed symlink from /usr/bin but still getting this issue. Please suggest. Thanks From: kartheek muthyala [mailto:kartheek0...@gmail.com] Sent: Tuesday, January 10, 2012 9:31 AM To: hdfs-user@hadoop.apache.org Subject: Re: Mounting HDFS Stuti, Can you send us the syslog details? (/var/log/syslog) Thanks, Kartheek. On Tue, Jan 10, 2012 at 1:36 AM, alo.alt <wget.n...@googlemail.com<mailto:wget.n...@googlemail.com>> wrote: Hmm, do you have fuse installed? http://fuse.sourceforge.net/ - Alex -- Alexander Lorenz http://mapredit.blogspot.com On Jan 9, 2012, at 3:55 AM, Stuti Awasthi wrote: > Hi Alo, > I tried to fresh build of fuse-dfs and this time I mount in /mnt but facing > same issues. I edited the "fuse_dfs_wrapper.sh" script and added > $JAVA_HOME/jre/lib/*.jar in the CLASSPATH , echoed the env variable and then > tried again but no luck. Getting same error. Below is the trace: > > [root@slave fuse-dfs]# ./fuse_dfs_wrapper.sh dfs://slave:54310 /mnt -d > > HADOOP_HOME= /root/MountHDFS1/hadoop-0.20.2 > > CLASSPATH= > :ls:/root/MountHDFS1/hadoop-0.20.2/lib/commons-cli-1.2.jar:/root/MountHDFS1/hadoop-0.20.2/lib/commons-codec-1.3.jar:/root/MountHDFS1/hadoop-0.20.2/lib/commons-el-1.0.jar:/root/MountHDFS1/hadoop-0.20.2/lib/commons-httpclient-3.0.1.jar:/root/MountHDFS1/hadoop-0.20.2/lib/commons-logging-1.0.4.jar:/root/MountHDFS1/hadoop-0.20.2/lib/commons-logging-api-1.0.4.jar:/root/MountHDFS1/hadoop-0.20.2/lib/commons-net-1.4.1.jar:/root/MountHDFS1/hadoop-0.20.2/lib/core-3.1.1.jar:/root/MountHDFS1/hadoop-0.20.2/lib/hsqldb-1.8.0.10.jar:/root/MountHDFS1/hadoop-0.20.2/lib/jasper-compiler-5.5.12.jar:/root/MountHDFS1/hadoop-0.20.2/lib/jasper-runtime-5.5.12.jar:/root/MountHDFS1/hadoop-0.20.2/lib/jets3t-0.6.1.jar:/root/MountHDFS1/hadoop-0.20.2/lib/jetty-6.1.14.jar:/root/MountHDFS1/hadoop-0.20.2/lib/jetty-util-6.1.14.jar:/root/MountHDFS1/hadoop-0.20.2/lib/junit-3.8.1.jar:/root/MountHDFS1/hadoop-0.20.2/lib/kfs-0.2.2.jar:/root/MountHDFS1/hadoop-0.20.2/lib/log4j-1.2.15.jar:/root/MountHDFS1/hadoop-0.20.2/lib/mockito-all-1.8.0.jar:/root/MountHDFS1/hadoop-0.20.2/lib/oro-2.0.8.jar:/root/MountHDFS1/hadoop-0.20.2/lib/servlet-api-2.5-6.1.14.jar:/root/MountHDFS1/hadoop-0.20.2/lib/slf4j-api-1.4.3.jar:/root/MountHDFS1/hadoop-0.20.2/lib/slf4j-log4j12-1.4.3.jar:/root/MountHDFS1/hadoop-0.20.2/lib/xmlenc-0.52.jar:/root/MountHDFS1/hadoop-0.20.2/hadoop-0.20.2-ant.jar:/root/MountHDFS1/hadoop-0.20.2/hadoop-0.20.2-core.jar:/root/MountHDFS1/hadoop-0.20.2/hadoop-0.20.2-examples.jar:/root/MountHDFS1/hadoop-0.20.2/hadoop-0.20.2-test.jar:/root/MountHDFS1/hadoop-0.20.2/hadoop-0.20.2-tools.jar:ls:/usr/java/jdk1.6.0_30/jre/lib/alt-rt.jar:/usr/java/jdk1.6.0_30/jre/lib/alt-string.jar:/usr/java/jdk1.6.0_30/jre/lib/charsets.jar:/usr/java/jdk1.6.0_30/jre/lib/deploy.jar:/usr/java/jdk1.6.0_30/jre/lib/javaws.jar:/usr/java/jdk1.6.0_30/jre/lib/jce.jar:/usr/java/jdk1.6.0_30/jre/lib/jsse.jar:/usr/java/jdk1.6.0_30/jre/lib/management-agent.jar:/usr/java/jdk1.6.0_30/jre/lib/plugin.jar:/usr/java/jdk1.6.0_30/jre/lib/resources.jar:/usr/java/jdk1.6.0_30/jre/lib/rt.jar:/usr/java/jdk1.6.0_30/bin > > JAVA_HOME= /usr/java/jdk1.6.0_30 > > LD_LIBRARY_PATH= > /usr/lib:/usr/local/lib:/root/MountHDFS1/hadoop-0.20.2/build/libhdfs:/usr/java/jdk1.6.0_30/jre/lib/i386/server/:/lib/libfuse.so > > port=54310,server=slave > fuse-dfs didn't recognize /mnt,-2 > fuse-dfs ignoring option -d > unique: 1, opcode: INIT (26), nodeid: 0, insize: 56 > INIT: 7.10 > flags=0x0000000b > max_readahead=0x00020000 > INIT: 7.8 > flags=0x00000001 > max_readahead=0x00020000 > max_write=0x00020000 > unique: 1, error: 0 (Success), outsize: 40 > unique: 2, opcode: GETATTR (3), nodeid: 1, insize: 56 > Error occurred during initialization of VM > java/lang/NoClassDefFoundError: java/lang/Object > > Im stuck with this. This is the output with fresh build of fuse-dfs. > CLASSPATH variable contains Hadoop*.jar, and $JAVA_HOME/jre/lib/*jar files. > JAVA_HOME is set differently also > What I am doing wrong. Any Idea ?? > > Thanks > > > -----Original Message----- > From: alo.alt > [mailto:wget.n...@googlemail.com<mailto:wget.n...@googlemail.com>] > Sent: Saturday, January 07, 2012 11:20 PM > To: hdfs-user@hadoop.apache.org<mailto:hdfs-user@hadoop.apache.org> > Subject: Re: Mounting HDFS > > try: > ./fuse_dfs_wrapper.sh dfs://namenode.local:<PORT> /MOUNT_POINT -d > > MOUNT_POINT has to be writable, try to use a mount point under / like /hdfs > or similar. Also remove the tailing / > > - Alex > > > -- > Alexander Lorenz > http://mapredit.blogspot.com > > On Jan 7, 2012, at 12:35 AM, Stuti Awasthi wrote: > >> Hi Alo,Srivas, >> >> Thanks for pointing this out. I am still getting the same error. This time >> with fuse_dfs_wrapper.sh I echoed the environment variables value also. >> >> [root@slave fuse-dfs]# ./fuse_dfs_wrapper.sh dfs://slave:54310 >> /root/FreshMount/mnt1/ -d >> >> CLASSPATH=/usr/java/jdk1.6.0_30/jre/lib/rt.jar:/usr/java/jdk1.6.0_30/j >> re/lib/jce.jar:/usr/java/jdk1.6.0_30/jre/lib/javaws.jar:/usr/java/jdk1 >> .6.0_30/jre/lib/deploy.jar:/usr/java/jdk1.6.0_30/jre/lib/jsse.jar:/usr >> /java/jdk1.6.0_30/jre/lib/plugin.jar:ls:/root/FreshMount/hadoop-0.20.2 >> /lib/commons-cli-1.2.jar:/root/FreshMount/hadoop-0.20.2/lib/commons-co >> dec-1.3.jar:/root/FreshMount/hadoop-0.20.2/lib/commons-el-1.0.jar:/roo >> t/FreshMount/hadoop-0.20.2/lib/commons-httpclient-3.0.1.jar:/root/Fres >> hMount/hadoop-0.20.2/lib/commons-logging-1.0.4.jar:/root/FreshMount/ha >> doop-0.20.2/lib/commons-logging-api-1.0.4.jar:/root/FreshMount/hadoop- >> 0.20.2/lib/commons-net-1.4.1.jar:/root/FreshMount/hadoop-0.20.2/lib/co >> re-3.1.1.jar:/root/FreshMount/hadoop-0.20.2/lib/hsqldb-1.8.0.10.jar:/r >> oot/FreshMount/hadoop-0.20.2/lib/jasper-compiler-5.5.12.jar:/root/Fres >> hMount/hadoop-0.20.2/lib/jasper-runtime-5.5.12.jar:/root/FreshMount/ha >> doop-0.20.2/lib/jets3t-0.6.1.jar:/root/FreshMount/hadoop-0.20.2/lib/je >> tty-6.1.14.jar:/root/FreshMount/hadoop-0.20.2/lib/jetty-util-6.1.14.ja >> r:/root/FreshMount/hadoop-0.20.2/lib/junit-3.8.1.jar:/root/FreshMount/ >> hadoop-0.20.2/lib/kfs-0.2.2.jar:/root/FreshMount/hadoop-0.20.2/lib/log >> 4j-1.2.15.jar:/root/FreshMount/hadoop-0.20.2/lib/mockito-all-1.8.0.jar >> :/root/FreshMount/hadoop-0.20.2/lib/oro-2.0.8.jar:/root/FreshMount/had >> oop-0.20.2/lib/servlet-api-2.5-6.1.14.jar:/root/FreshMount/hadoop-0.20 >> .2/lib/slf4j-api-1.4.3.jar:/root/FreshMount/hadoop-0.20.2/lib/slf4j-lo >> g4j12-1.4.3.jar:/root/FreshMount/hadoop-0.20.2/lib/xmlenc-0.52.jar:/ro >> ot/FreshMount/hadoop-0.20.2/hadoop-0.20.2-ant.jar:/root/FreshMount/had >> oop-0.20.2/hadoop-0.20.2-core.jar:/root/FreshMount/hadoop-0.20.2/hadoo >> p-0.20.2-examples.jar:/root/FreshMount/hadoop-0.20.2/hadoop-0.20.2-tes >> t.jar:/root/FreshMount/hadoop-0.20.2/hadoop-0.20.2-tools.jar >> >> LD_LIBRARY_PATH=/usr/lib:/usr/local/lib:/root/FreshMount/hadoop-0.20.2 >> /build/libhdfs:/usr/java/jdk1.6.0_30/jre/lib/i386/server/:/lib/libfuse >> .so >> >> JAVA_HOME=/usr/java/jdk1.6.0_30 >> >> Error: >> port=54310,server=slave >> fuse-dfs didn't recognize /root/FreshMount/mnt1/,-2 fuse-dfs ignoring >> option -d >> unique: 1, opcode: INIT (26), nodeid: 0, insize: 56 >> INIT: 7.10 >> flags=0x0000000b >> max_readahead=0x00020000 >> INIT: 7.8 >> flags=0x00000001 >> max_readahead=0x00020000 >> max_write=0x00020000 >> unique: 1, error: 0 (Success), outsize: 40 >> unique: 2, opcode: GETATTR (3), nodeid: 1, insize: 56 Error occurred >> during initialization of VM >> java/lang/NoClassDefFoundError: java/lang/Object >> >> -----Original Message----- >> From: alo.alt >> [mailto:wget.n...@googlemail.com<mailto:wget.n...@googlemail.com>] >> Sent: Friday, January 06, 2012 10:41 PM >> To: hdfs-user@hadoop.apache.org<mailto:hdfs-user@hadoop.apache.org> >> Subject: Re: Mounting HDFS >> >> Stuti, define in CLASSPATH="...." only the jars you really need for. An >> export of all jars in a given directory is a red flag (done with *.jar). >> >> - Alex >> >> >> On Jan 6, 2012, at 7:23 AM, M. C. Srivas wrote: >> >>> >>> unique: 1, error: 0 (Success), outsize: 40 >>> unique: 2, opcode: GETATTR (3), nodeid: 1, insize: 56 Error occurred >>> during initialization of VM >>> java/lang/NoClassDefFoundError: java/lang/Object >>> >>> Exported Environment Variable: >>> >>> CLASSPATH="/root/FreshMount/hadoop-0.20.2/lib/*.jar:/root/FreshMount/hadoop-0.20.2/*.jar:/usr/bin/java:/usr/local/lib:/usr/lib:/usr/:/usr/java/jdk1.6.0_26/jre/lib/rt.jar:/usr/java/jdk1.6.0_26/jre/lib/" >>> >>> >>> CLASSPATH is a list of jars, not a list of directories >>> >>> >>> I know that this is simple Java Classpath Error but I have set JAVA_HOME >>> correctly. >>> >>> [root@slave ~]# which java >>> /usr/bin/java >>> >> >> >> ::DISCLAIMER:: >> ---------------------------------------------------------------------- >> ------------------------------------------------- >> >> The contents of this e-mail and any attachment(s) are confidential and >> intended for the named recipient(s) only. >> It shall not attach any liability on the originator or HCL or its >> affiliates. 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