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in file buf0mtflu.cc line 439 Analysis: At shutdown multi-threaded flush sends a exit work items to all mtflush threads. We wait until the work queue is empty. However, as we did not hold the mutex, some other thread could also put work-items to work queue. Fix: Take mutex before adding exit work items to work queue and wait until all work-items are really processed. Release mutex after we have marked that multi-threaded flush is not anymore active. Fix test failure on innodb_bug12902967 caused by unnecessary info output on xtradb/buf/buf0mtflush.cc. Do not try to enable atomic writes if the file type is not OS_DATA_FILE. Atomic writes are unnecessary for log files. If we try to enable atomic writes to log writes that are stored to media supporting atomic writes we will end up problems later. |
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