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HADOOP-11296. hadoop-daemons.sh throws 'host1: bash: host3: command not found...' (Contributed by Vinayakumar B)

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Vinayakumar B 2014-12-03 10:07:43 +05:30
parent 3d48ad7eb4
commit 92ce6eda92
2 changed files with 9 additions and 0 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -355,6 +355,9 @@ Trunk (Unreleased)
HADOOP-11298. slaves.sh and stop-all.sh are missing slashes (aw) HADOOP-11298. slaves.sh and stop-all.sh are missing slashes (aw)
HADOOP-11296. hadoop-daemons.sh throws 'host1: bash: host3:
command not found...' (vinayakumarb)
OPTIMIZATIONS OPTIMIZATIONS
HADOOP-7761. Improve the performance of raw comparisons. (todd) HADOOP-7761. Improve the performance of raw comparisons. (todd)

6
hadoop-common-project/hadoop-common/src/main/bin/hadoop-functions.sh
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@ -273,6 +273,12 @@ function hadoop_connect_to_hosts
# moral of the story: just use pdsh. # moral of the story: just use pdsh.
export -f hadoop_actual_ssh export -f hadoop_actual_ssh
export HADOOP_SSH_OPTS export HADOOP_SSH_OPTS
# xargs is used with option -I to replace the placeholder in arguments
# list with each hostname read from stdin/pipe. But it consider one
# line as one argument while reading from stdin/pipe. So place each
# hostname in different lines while passing via pipe.
SLAVE_NAMES=$(echo "$SLAVE_NAMES" | tr ' ' '\n' )
echo "${SLAVE_NAMES}" | \ echo "${SLAVE_NAMES}" | \
xargs -n 1 -P"${HADOOP_SSH_PARALLEL}" \ xargs -n 1 -P"${HADOOP_SSH_PARALLEL}" \
-I {} bash -c -- "hadoop_actual_ssh {} ${params}" -I {} bash -c -- "hadoop_actual_ssh {} ${params}"