Hi,

When I cache a table in memory for the first time in Spark (version 0.8.0),
it usually takes 10 mins. If I were to quit Spark and restart it then
re-cache the same table in memory, the operation would take 4 mins. I had
the assumption that quitting the Spark session will un-cache the table from
memory. Does any OS caching take place since re-caching the table takes half
the original time?

Thanks
Mskh



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