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Concurrent SQL import #20

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Concurrent SQL import #20

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96d4cc5
Mysql concurrent import of SQL
nterbogt Oct 23, 2025
17e8e57
Use the latest mtk
nterbogt Oct 24, 2025
57b5f84
Get the number of CPUs for workers
nterbogt Oct 27, 2025
b76d111
Always use 4
nterbogt Oct 29, 2025
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2 changes: 1 addition & 1 deletion mysql/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ ADD my.cnf /etc/mysql/mysql.cnf

# MTK - A toolkit for exporting, sanitizing and packaging MySQL database.
# https://github.com/skpr/mtk
COPY --from=ghcr.io/skpr/mtk:v2.1.1 /usr/local/bin/mtk /usr/local/bin/mtk
COPY --from=ghcr.io/skpr/mtk:v2.3.0 /usr/local/bin/mtk /usr/local/bin/mtk

USER mysql

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22 changes: 16 additions & 6 deletions mysql/scripts/database-import-tables
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Expand Up @@ -2,14 +2,24 @@

DATABASE=$1
DUMP_DIR=$2
MAX_CONCURRENT=4

mysql-drop-tables ${MYSQL_USERNAME} ${MYSQL_PASSWORD} ${MYSQL_HOSTNAME} ${DATABASE}

for i in ${DUMP_DIR}/*.sql
do
echo "Starting to import: $i"
# define the worker function
import_sql() {
local sqlfile="$1"
echo "Starting to import: $sqlfile"
start=$(date +%s)
MYSQL_PWD="${MYSQL_PASSWORD}" mysql --user=${MYSQL_USERNAME} --host=${MYSQL_HOSTNAME} ${DATABASE} < $i
MYSQL_PWD="${MYSQL_PASSWORD}" mysql --user=${MYSQL_USERNAME} --host=${MYSQL_HOSTNAME} ${DATABASE} < $sqlfile
end=$(date +%s)
echo "Finished importing $i in: $(($end-$start)) seconds"
done
echo "Finished importing $sqlfile in: $(($end-$start)) seconds"
}
export -f import_sql
export DATABASE
export MYSQL_HOSTNAME
export MYSQL_USERNAME
export MYSQL_PASSWORD

find "$DUMP_DIR" -type f -name '*.sql' -print0 \
| xargs -0 -n1 -P"$MAX_CONCURRENT" bash -c 'import_sql "$@"' _