ClickHouse/tests/queries/0_stateless/01249_flush_interactive.sh

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2020-04-19 19:22:03 +00:00
#!/usr/bin/env bash
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
. $CURDIR/../shell_config.sh
# A question for curious reader:
# How to break shell pipeline as soon as 5 lines are found in the following command:
# ./my-program | head -n5
# When I tried to do it, pipeline was not actively terminated,
# unless the my-program will try to output a thousand more lines overflowing pipe buffer and terminating with Broken Pipe.
# But if my program just output 5 (or slightly more) lines and hang up, the pipeline is not terminated.
timeout 1 ${CLICKHOUSE_LOCAL} --max_execution_time 10 --query "SELECT DISTINCT number % 5 FROM system.numbers" ||:
echo '---'
timeout 1 ${CLICKHOUSE_CURL} -sS --no-buffer "${CLICKHOUSE_URL}&max_execution_time=10" --data-binary "SELECT DISTINCT number % 5 FROM system.numbers" ||:
echo '---'