Forum Post: RE: How to find out which extends will be updated? Will checking of the extends...

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gus

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default behaviour is that data extents are opened in async mode. writes are performed with pwrite() system call. data are flushed at end of checkpoint cycles by using fdatasync(). also, we do write-ahead logging to an undo-redo log, with a buffer management policy of lru, steal, no-force.

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