Every 128th key is held in memory. So if you've got 1M keys in a
MapFile, then opening a MapFile.Reader would read 10k keys into memory.
Binary search is used on these in-memory keys, so that a maximum of
127 entries must be scanned per random access.
Doug
Phantom wrote:
Hi All
I know this is a tall ask. I am going through the source code. But could
someone please tell me the intuition behind the design of the MapFile
class.
If I were using the MapFile against the local file system are there any
limitations to the number of items I can store. I mean can I have a MapFile
on the local filesystem that has say 10GB of data. The reason I ask this is
because I did read in the documentation that it behooves one to keep the
key
small since the index is completely kept in memory. Could someone please
enlighten me ?
Thanks
Avinash
