But does that sync that file or all files, looking for the later... -jay
Sent from my iPhone On Nov 5, 2011, at 1:44 PM, Joe Stein <crypt...@gmail.com> wrote: > On the fileoutputstream you can get the filedescriptor using getFD() and then > on that object you can sync() > > /* > Joe Stein > http://www.medialets.com > Twitter: @allthingshadoop > */ > > On Nov 5, 2011, at 4:34 PM, Jay Kreps <jay.kr...@gmail.com> wrote: > >> Does anyone know if there is an equivalent to the sync() system call >> available in Java? This is the system call that flushes all files. This >> seems like it might be a good optimization for the time-based log flush. If >> you are going to sequentially flush all the log partitions anyway it might >> be better to just do a single sync() and let the I/O scheduler have more >> leeway in the ordering of he writes. I know who to get the equivalent of >> fsync() or fdatasync() using FileChannel.force(...) to flush a single file >> but I don't know how to get the equivalent of sync(). >> >> -Jay
