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From Stuti Awasthi <stutiawas...@hcl.com>
Subject Unable to mount HDFS using entry in /etc/fstab
Date Thu, 12 Jan 2012 12:02:13 GMT
Hi All,
I am able to mount HDFS using fuse-dfs. I am using http://wiki.apache.org/hadoop/MountableHDFS
for the reference.
Currently able to HDFS mount using fuse_dfs_wrapper.sh and also directly executing fuse_dfs
executable.

Eg:
[root@slave fuse-dfs]# fuse_dfs -oserver=slave -oport=54310 -oallow_other -ousetrash rw /mnt
-d
fuse-dfs ignoring option allow_other
fuse-dfs didn't recognize /mnt,-2
fuse-dfs ignoring option -d
FUSE library version: 2.8.3
nullpath_ok: 0
unique: 1, opcode: INIT (26), nodeid: 0, insize: 56
INIT: 7.13
flags=0x0000007b
max_readahead=0x00020000
   INIT: 7.12
   flags=0x00000011
   max_readahead=0x00020000
   max_write=0x00020000
   unique: 1, success, outsize: 40
unique: 2, opcode: STATFS (17), nodeid: 1, insize: 40
statfs /
   unique: 2, success, outsize: 96
unique: 3, opcode: GETATTR (3), nodeid: 1, insize: 56
getattr /
   unique: 3, success, outsize: 120

Now when I add the entry in /etc/fstab file and try to mount hdfs , I get the following error
:

Entry in /etc/fstab:
fuse_dfs#dfs://slave:54310 /mnt fuse -oallow_other,rw,-ousetrash 0 0

[root@slave fuse-dfs]# 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'

Exported env variable:

declare -x CLASSPATH="/root/MountHDFS/hadoop-0.20.2/lib/commons-cli-1.2.jar:/root/MountHDFS/hadoop-0.20.2/lib/commons-codec-1.3.jar:/root/MountHDFS/hadoop-0.20.2/lib/commons-el-1.0.jar:/root/MountHDFS/hadoop-0.20.2/lib/commons-httpclient-3.0.1.jar:/root/MountHDFS/hadoop-0.20.2/lib/commons-logging-1.0.4.jar:/root/MountHDFS/hadoop-0.20.2/lib/commons-logging-api-1.0.4.jar:/root/MountHDFS/hadoop-0.20.2/lib/commons-net-1.4.1.jar:/root/MountHDFS/hadoop-0.20.2/lib/core-3.1.1.jar:/root/MountHDFS/hadoop-0.20.2/lib/hsqldb-1.8.0.10.jar:/root/MountHDFS/hadoop-0.20.2/lib/jasper-compiler-5.5.12.jar:/root/MountHDFS/hadoop-0.20.2/lib/jasper-runtime-5.5.12.jar:/root/MountHDFS/hadoop-0.20.2/lib/jets3t-0.6.1.jar:/root/MountHDFS/hadoop-0.20.2/lib/jetty-6.1.14.jar:/root/MountHDFS/hadoop-0.20.2/lib/jetty-util-6.1.14.jar:/root/MountHDFS/hadoop-0.20.2/lib/junit-3.8.1.jar:/root/MountHDFS/hadoop-0.20.2/lib/kfs-0.2.2.jar:/root/MountHDFS/hadoop-0.20.2/lib/log4j-1.2.15.jar:/root/MountHDFS/hadoop-0.20.2/lib/mockito-all-1.8.0.jar:/root/MountHDFS/hadoop-0.20.2/lib/oro-2.0.8.jar:/root/MountHDFS/hadoop-0.20.2/lib/servlet-api-2.5-6.1.14.jar:/root/MountHDFS/hadoop-0.20.2/lib/slf4j-api-1.4.3.jar:/root/MountHDFS/hadoop-0.20.2/lib/slf4j-log4j12-1.4.3.jar:/root/MountHDFS/hadoop-0.20.2/lib/xmlenc-0.52.jar:/root/MountHDFS/hadoop-0.20.2/hadoop-0.20.2-ant.jar:/root/MountHDFS/hadoop-0.20.2/hadoop-0.20.2-core.jar:/root/MountHDFS/hadoop-0.20.2/hadoop-0.20.2-examples.jar:/root/MountHDFS/hadoop-0.20.2/hadoop-0.20.2-test.jar:/root/MountHDFS/hadoop-0.20.2/hadoop-0.20.2-tools.jar"
declare -x FUSE_HOME="/usr/include/fuse"
declare -x HADOOP_HOME="/root/MountHDFS/hadoop-0.20.2"
eclare -x JAVA_HOME="/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64"
declare -x LD_LIBRARY_PATH="/usr/lib:/usr/lib64:/usr/local/lib:/usr/local/lib64:/root/MountHDFS/hadoop-0.20.2/build/libhdfs:/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server/:/lib64/libfuse.so.2:/lib64/libfuse.so"
declare -x PATH="/usr/include/fuse:/usr/include/fuse.h:/lib64/libfuse.so.2:/lib64:/usr/lib64:/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/bin/:/root/MountHDFS/Ant/apache-ant-1.8.2/bin"

Has anyone also faced same issue. Please suggest me how to fix this.

Regards,
Stuti Awasthi
HCL Comnet Systems and Services Ltd
F-8/9 Basement, Sec-3,Noida.


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