Hi All, With hadoop-2.2.0, I tried to mount hdfs by using fuse-dfs. I have successfully compiled hadoop-2.2.0.tar.gz and fuse-dfs with "mvn package -Pdist,native -DskipTests -Dtar -e -X” from hadoop-2.2.0-src.
After I deployed hadoop-2.2.0.tar.gz and run single mode HDFS, I tried to run following command to mount hdfs: ------------------------------------------------ LD_LIBRARY_PATH=/opt/hadoop-2.2.0/lib/native:/usr/java/jdk1.7.0_55/jre/lib/amd64/server CLASSPATH=/opt/hadoop-2.2.0/etc/hadoop:/opt/hadoop-2.2.0/share/hadoop/common/lib/*:/opt/hadoop-2.2.0/share/hadoop/common/*:/opt/hadoop-2.2.0/share/hadoop/hdfs:/opt/hadoop-2.2.0/share/hadoop/hdfs/lib/*:/opt/hadoop-2.2.0/share/hadoop/hdfs/*:/opt/hadoop-2.2.0/share/hadoop/yarn/lib/*:/opt/hadoop-2.2.0/share/hadoop/yarn/*:/opt/hadoop-2.2.0/share/hadoop/mapreduce/lib/*:/opt/hadoop-2.2.0/share/hadoop/mapreduce/*:/opt/hadoop-2.2.0/contrib/capacity-scheduler/*.jar bin/fuse_dfs -d dfs://localhost:8020 /mnt/hdfs ------------------------------------------------ However, I got failed with error message: ------------------------------------------------ INFO /root/hadoop-2.2.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_options.c:115 Ignoring option -d INFO /root/hadoop-2.2.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_options.c:164 Adding FUSE arg /mnt/hdfs FUSE library version: 2.8.3 nullpath_ok: 0 unique: 1, opcode: INIT (26), nodeid: 0, insize: 56 INIT: 7.13 flags=0x0000b07b max_readahead=0x00020000 INFO /root/hadoop-2.2.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_init.c:98 Mounting with options: [ protected=(NULL), nn_uri=hdfs://nebula-vm14.cs.purdue.edu:8020, nn_port=0, debug=0, read_only=0, initchecks=0, no_permissions=0, usetrash=0, entry_timeout=60, attribute_timeout=60, rdbuffer_size=10485760, direct_io=0 ] loadFileSystems error: (unable to get stack trace for java.lang.NoClassDefFoundError exception: ExceptionUtils::getStackTrace error.) hdfsConfGetInt(hadoop.fuse.timer.period): new Configuration error: (unable to get stack trace for java.lang.NoClassDefFoundError exception: ExceptionUtils::getStackTrace error.) Unable to determine the configured value for hadoop.fuse.timer.period.ERROR /root/hadoop-2.2.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_init.c:134 FATAL: dfs_init: fuseConnectInit failed with error -22! ERROR /root/hadoop-2.2.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_init.c:34 LD_LIBRARY_PATH=/opt/hadoop-2.2.0/lib/native:/usr/java/jdk1.7.0_55/jre/lib/amd64/server ERROR /root/hadoop-2.2.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_init.c:35 CLASSPATH=/opt/hadoop-2.2.0/etc/hadoop:/opt/hadoop-2.2.0/share/hadoop/common/lib/*:/opt/hadoop-2.2.0/share/hadoop/common/*:/opt/hadoop-2.2.0/share/hadoop/hdfs:/opt/hadoop-2.2.0/share/hadoop/hdfs/lib/*:/opt/hadoop-2.2.0/share/hadoop/hdfs/*:/opt/hadoop-2.2.0/share/hadoop/yarn/lib/*:/opt/hadoop-2.2.0/share/hadoop/yarn/*:/opt/hadoop-2.2.0/share/hadoop/mapreduce/lib/*:/opt/hadoop-2.2.0/share/hadoop/mapreduce/*:/opt/hadoop-2.2.0/contrib/capacity-scheduler/*.jar ------------------------------------------------ It looks like the configuration is not correctly loaded. But I have already configured “hadoop.fuse.timer.period" and “hadoop.fuse.connection.timeout" in $HADOOP_HOME/etc/hadoop/hdfs-site.xml. Can any one share some hints on how to fix this? How can I let fuse-dfs correctly load the configuration? Thanks in advance! Cheng
