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Avoid serving a zero cache after identity failure - #37323
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AbstractIdentityColumnMaxValueIncrementer published valueCache and nextValueIndex before the insert/identity loop finished. A failed insert left a zero-filled cache in place, so the next call returned 0 instead of retrying the database. The same path served a partial cache when a later insert in the batch failed. Build the cache locally and publish it only after every identity read succeeds. A failed allocation leaves the previous index unchanged, so the next call retries. Cleanup delete still runs after publish, so a delete failure does not discard ids that were actually allocated. Signed-off-by: Burak KALAYCI <kalayciburak1996@gmail.com>
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AbstractIdentityColumnMaxValueIncrementerassignedvalueCacheandnextValueIndexbefore the insert/identity loop finished.If
executeUpdatefailed, the zero-filled cache stayed published. The nextnextLongValue()skipped the database and returned0. A later failure in acacheSize > 1batch had the same shape: the incomplete cache was already visible.The cache is now built locally and published only after every identity read succeeds. A failed allocation leaves the previous index unchanged, so the next call retries. The cleanup
deletestill runs after publish, so a delete failure does not drop ids that were actually allocated.This is the identity-column path (HSQL, Sybase, Derby, SQL Server, MySQL identity). It does not change
MySQLMaxValueIncrementer.Before the fix,
AbstractIdentityColumnMaxValueIncrementerTestsexpected7and got0after a failed insert. After the fix that test, the partial-batch case, andDataFieldMaxValueIncrementerTestspass.