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77 lines
2.0 KiB
Bash
77 lines
2.0 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: 2019-12-06 11:10:26 +0000 (Fri, 06 Dec 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 to help steer this or other code I publish
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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 "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090,SC1091
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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List Hive tables in all databases via beeline
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Output Format:
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<database_name> <table_name>
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FILTER environment variable will restrict to matching fully qualified tables (<db>.<table>)
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Tested on Hive 1.1.0 on CDH 5.10, 5.16
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For Hive 3.0+ information schema is finally available which is more efficient than iterating per database eg.
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SELECT * FROM information_schema.tables
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(table_catalog, table_schema, table_name)
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For Hive < 3.0 - consider using adjacent impala_list_tables.sh instead as it is much faster
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For a better version written in Python see DevOps Python tools repo:
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https://github.com/HariSekhon/DevOps-Python-tools
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Hive doesn't suffer from db authz issue listing metadata like Impala, which gets:
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ERROR: AuthorizationException: User '<user>@<domain>' does not have privileges to access: default Default Hive database.*.*
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<beeline_options>]"
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help_usage "$@"
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opts="--silent=true --outputformat=tsv2"
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# shellcheck disable=SC2086
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"$srcdir/hive_list_databases.sh" "$@" |
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while read -r db; do
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"$srcdir/beeline.sh" $opts -e "SHOW TABLES FROM \`$db\`" "$@" |
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tail -n +2 |
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sed "s/^/$db /"
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done |
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while read -r db table; do
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if [ -n "${FILTER:-}" ] &&
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! [[ "$db.$table" =~ $FILTER ]]; then
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continue
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fi
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printf '%s\t%s\n' "$db" "$table"
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done
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