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Fengdong Yu commented on HDFS-6239: ----------------------------------- I cannot reproduce it. Do you have softlink on your Hadoop install path? maybe your bash is incompatible. so can you try: search '-P' in the $HADOOP_HOME/libexec/hadoop-config.sh, and remove "-P". > start-dfs.sh does not start remote DataNode due to escape characters > -------------------------------------------------------------------- > > Key: HDFS-6239 > URL: https://issues.apache.org/jira/browse/HDFS-6239 > Project: Hadoop HDFS > Issue Type: Bug > Components: scripts > Affects Versions: 1.2.1 > Environment: GNU bash, version 4.1.2(1)-release > (x86_64-redhat-linux-gnu) > Linux foo 2.6.32-431.3.1.el6.x86_64 #1 SMP Fri Dec 13 06:58:20 EST 2013 > x86_64 x86_64 x86_64 GNU/Linux > AFS file system. > Reporter: xyzzy > > start-dfs.sh fails to start remote data nodes and task nodes, though it is > possible to start them manually through hadoop-daemon.sh. > I've been able to debug and find the root cause the bug, and I thought it was > a trivial fix, but I do not know how to do it. Can't figure out a way to > handle this seemingly trivial bug. > hadoop-daemons.sh calls slave.sh: > exec "$bin/slaves.sh" --config $HADOOP_CONF_DIR cd "$HADOOP_HOME" \; > "$bin/hadoop-daemon.sh" --config $HADOOP_CONF_DIR "$@" > This is the issue when I debug using bash -x: In slaves.sh, the \; becomes ';' > + ssh xxxx.xx.xxxx.xxx cd /afs/xx.xxxx.xxx/x/x/x/xx/xxxxx/libexec/.. ';' > /afs/xx.xxxx.xxx/x/x/x/xx/xxxx/bin/hadoop-daemon.sh --config > /afs/xx.xxxx.xxx/x/x/x/xx/xxxx/libexec/../conf start datanode > The problem is ';' . Because the semi-colon is surrounded by quotes, it > doesn't execute the code after that. I manually ran the above command, and as > expected the data node did not start. When I removed the quotes around the > semi-colon, everything works. Please note that you can see the issue only > when you do bash -x. If you echo the statement, the quotes around the > semi-colon are not visible. > This issue is always reproducible for me, and because of it, I have to > manually start daemons on each machine. -- This message was sent by Atlassian JIRA (v6.2#6252)