hadoop/hadoop-hdfs-project/hadoop-hdfs/src/main/bin/start-balancer.sh

#!/usr/bin/env bash

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#     http://www.apache.org/licenses/LICENSE-2.0
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bin=`dirname "${BASH_SOURCE-$0}"`
bin=`cd "$bin"; pwd`

DEFAULT_LIBEXEC_DIR="$bin"/../libexec
HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
. $HADOOP_LIBEXEC_DIR/hdfs-config.sh

# Start balancer daemon.

"$HADOOP_PREFIX"/sbin/hadoop-daemon.sh --config $HADOOP_CONF_DIR --script "$bin"/hdfs start balancer $@