Chunliang Lu created HADOOP-9059:
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Summary: hadoop-daemons.sh script constraint that all the nodes
should use the same installation path.
Key: HADOOP-9059
URL: https://issues.apache.org/jira/browse/HADOOP-9059
Project: Hadoop Common
Issue Type: Bug
Components: bin
Affects Versions: 1.0.4
Environment: Linux
Reporter: Chunliang Lu
Priority: Critical
To run command on all slave hosts, the bin/hadoop-daemons.sh will call the
bin/slaves.sh at last line:
{code}
exec "$bin/slaves.sh" --config $HADOOP_CONF_DIR cd "$HADOOP_HOME" \;
"$bin/hadoop-daemon.sh" --config $HADOOP_CONF_DIR "$@"
{code}
where slaves.sh will call ssh and pass the `cd "$HADOOP_HOME" \;
"$bin/hadoop-daemon.sh" --config $HADOOP_CONF_DIR "$@"` part to the slaves. In
bash, the $HADOOP_HOME $bin, and $HADOOP_CONF_DIR will be replaced as current
settings on the master, which means that this constraints that all the slave
nodes need to share the same path setting as master node. This is not
reasonable. In my setting, the cluster has a shared NFS, and I would like to
use different configuration files for different machines. I know this is not a
recommended way to manage clusters, but I just have no choice. I think other
people may face the same problem. How about replace it like following and allow
different configuration for master and slaves?
{code}
cd "$HADOOP_HOME" \; "$bin/hadoop-daemon.sh" --config $HADOOP_CONF_DIR "$@"
{code}
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