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thevar1able/ClickHouse

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Fix waiting of shared lock after exclusive lock failure When WRITE lock attemp fails (exclusive lock for ALTER/DELETE), and there are multiple READ locks (shared lock for SELECT/INSERT), i.e. one INSERT is in progress and one SELECT is queued after ALTER/DELETE started but before it fails, this SELECT will wait until INSERT will finishes. This happens because in case of WRITE lock failure it does not notify the next READ lock that can be acquired. Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>

2022-07-05 13:50:23 +00:00

WRITE locking attempt on "default_ordinary.data_02352" has timed out