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8a745593a2
DynamoDB protocol specifies that when getting items in a batch failed only partially, unprocessed keys can be returned so that the user can perform a retry. Alternator used to fail the whole request if any of the reads failed, but right now it instead produces the list of unprocessed keys and returns them to the user, as long as at least 1 read was successful. This series comes with a test based on Scylla's error injection mechanism, and thus is only useful in modes which come with error injection compiled in. In release mode, expect to see the following message: SKIPPED (Error injection not enabled in Scylla - try compiling in dev/debug/sanitize mode) Fixes #9984 Closes #9986 * github.com:scylladb/scylla: test: add total failure case for GetBatchItem test: add error injection case for GetBatchItem test: add a context manager for error injection to alternator alternator: add error injection to BatchGetItem alternator: fill UnprocessedKeys for failed batch reads