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Now the test reproduces the issue clearly

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This commit is contained in:
Alexey Milovidov 2019-05-05 02:38:40 +03:00
parent ad3a475346
commit a924e1c5fb
1 changed files with 9 additions and 3 deletions
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12
dbms/tests/queries/0_stateless/00941_system_columns_race_condition.sh
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@ -12,7 +12,7 @@ $CLICKHOUSE_CLIENT -q "CREATE TABLE alter_table (a UInt8, b Int16, c Float32, d
function thread1() function thread1()
{ {
while true; do $CLICKHOUSE_CLIENT --query "SELECT * FROM system.columns FORMAT Null"; done while true; do $CLICKHOUSE_CLIENT --query "SELECT name FROM system.columns UNION ALL SELECT name FROM system.columns FORMAT Null"; done
} }
function thread2() function thread2()
@ -24,8 +24,14 @@ function thread2()
export -f thread1; export -f thread1;
export -f thread2; export -f thread2;
timeout 5 bash -c thread1 & timeout 5 bash -c thread1 > /dev/null &
timeout 5 bash -c thread2 & timeout 5 bash -c thread1 > /dev/null &
timeout 5 bash -c thread1 > /dev/null &
timeout 5 bash -c thread1 > /dev/null &
timeout 5 bash -c thread2 > /dev/null &
timeout 5 bash -c thread2 > /dev/null &
timeout 5 bash -c thread2 > /dev/null &
timeout 5 bash -c thread2 > /dev/null &
wait wait