Correct replication factor for all underreplicated blocks in HDFS.

hdfs-fix-all-underreplicatedblocks.sh

!/bin/env bash

if [ -z ${1} ]; then
    echo "Replication factor required."
    exit 1
fi

TEMP_FILE=$(mktemp)
echo "Writing underreplicated files to $TEMP_FILE"
hdfs fsck / | grep 'Under replicated' | awk -F':' '{print $1}' >> $TEMP_FILE

for hdfsfile in `cat $TEMP_FILE`; do echo "Fixing $hdfsfile :" ; hadoop fs -setrep $1 $hdfsfile; done