<transcript><audio_188>distributed transaction protocols we'll talk about that in the last three lectures of the class briefly okay so stable storage we won't uh touch at all today so we want dirty pages to sit right now we'll just concern ourselves with the two- tier scenario for the</transcript><transcript><audio_189>remainder of today's lecture and tomorrow which is buffer pool in dram and that gets spilled out to some stable storage like SST or dis which can survive a power failure okay so let's</transcript><transcript><audio_190>begin why do transactions fail there are multiple reasons first transactions can fail because there are logical errors in the transaction I updated a record and oops</transcript> distributed transaction protocols we'll talk about that in the last three lectures of the class briefly okay so stable storage we won't uh touch at all today so we want dirty pages to sit right now we'll just concern ourselves with the two- tier scenario for the remainder of today's lecture and tomorrow which is buffer pool in dram and that gets spilled out to some stable storage like SST or dis which can survive a power failure okay so let's begin why do transactions fail there are multiple reasons first transactions can fail because there are logical errors in the transaction I updated a record and oops
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