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In case of concurrent INSERT and SELECT, and memory pressure it is possible to get this error, if you are very lucky. Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
28 lines
1.2 KiB
Bash
Executable File
28 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Tags: no-fasttest
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# Regression test for 'Logical error: No column to rollback' in case of
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# exception while commiting batch into the Buffer, see [1].
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#
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# [1]: https://github.com/ClickHouse/ClickHouse/issues/42740
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CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
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# shellcheck source=../shell_config.sh
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. "$CURDIR"/../shell_config.sh
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$CLICKHOUSE_CLIENT -q "DROP TABLE IF EXISTS t_buffer_string"
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$CLICKHOUSE_CLIENT -q "CREATE TABLE t_buffer_string(key String) ENGINE = Buffer('', '', 1, 1, 1, 1000000000000, 1000000000000, 1000000000000, 1000000000000)"
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# --continue_on_errors -- to ignore possible MEMORY_LIMIT_EXCEEDED errors
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# --concurrency -- we need have SELECT and INSERT in parallel to have refcount
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# of the column in the Buffer block > 1, that way we will do
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# full clone and moving a column may throw.
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#
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# It reproduces the problem 100% with MemoryTrackerFaultInjectorInThread in the appendBlock()
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$CLICKHOUSE_BENCHMARK --randomize --timelimit 10 --continue_on_errors --concurrency 10 >& /dev/null <<EOL
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INSERT INTO t_buffer_string SELECT number::String from numbers(10000)
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SELECT * FROM t_buffer_string
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EOL
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$CLICKHOUSE_CLIENT -q "DROP TABLE t_buffer_string"
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