in reply to Re^3: Split a file based on column
in thread Split a file based on column
Loading a 19GB file into memory does indeed give pause for thought.... long long pause. :) Time enough to contemplate approaches that do scale well.
Your accumulate and write when full strategy is a pretty good idea. It would be a data cache rather than a filehandle cache, and the implementation ought to be pretty straight forward. Implementing the file-handle LFU cache seems like it would be more fun though.
Dave
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