to be more precise, the difference depends on de-serialization overhead from kryo for your data structures.

On Mon, Mar 3, 2014 at 8:21 PM, Koert Kuipers <> wrote:
yes, tachyon is in memory serialized, which is not as fast as cached in memory in spark (not serialized). the difference really depends on your job type.

On Mon, Mar 3, 2014 at 7:10 PM, polkosity <> wrote:
Thats exciting!  Will be looking into that, thanks Andrew.

Related topic, has anyone had any experience running Spark on Tachyon
in-memory filesystem, and could offer their views on using it?

View this message in context:
Sent from the Apache Spark User List mailing list archive at