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71 lines
1.6 KiB
Bash
71 lines
1.6 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2019-11-27 16:09:34 +0000 (Wed, 27 Nov 2019)
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#
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# https://github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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usage(){
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cat <<EOF
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Recurses HDFS path arguments checking for any files with less than replication factor 3 and resetting them
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back to replication factor 3
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These files cause alerts during single node downtime / maintenance due to missing blocks and
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should really be set to replication factor 3
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Calls HDFS command which is assumed to be in \$PATH
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Make sure to kinit before running this if using a production Kerberized cluster
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Setting environment variable SKIP_ZERO_BYTE_FILES to any value will not list files with zero bytes
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See also:
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hdfs_find_replication_factor_1.sh (adjacent)
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and
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hdfs_find_replication_factor_1.py in DevOps Python tools repo which can
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also reset these found files back to replication factor 3 to fix the issue
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https://github.com/HariSekhon/DevOps-Python-tools
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usage: ${0##*/} <file_or_directory_paths>
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EOF
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exit 3
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}
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if [[ "${1:-}" =~ ^- ]]; then
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usage
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fi
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skip_zero_byte_files(){
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if [ -n "${SKIP_ZERO_BYTE_FILES:-}" ]; then
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awk '{if($5 != 0) print }'
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else
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cat
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fi
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}
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hdfs dfs -ls -R "$@" |
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grep -v '^d' |
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skip_zero_byte_files |
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awk '{ if ($2 < 3) { $1=$2=$3=$4=$5=$6=$7=""; print } }' |
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sed 's/^[[:space:]]*//' |
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xargs --no-run-if-empty hdfs dfs -setrep 3
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