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From "jian.t" <jian.tan...@gmail.com>
Subject Re: Memory requirement of using Spark
Date Fri, 24 Oct 2014 13:38:16 GMT
Thanks Akhil.

I searched DISK_AND_MEMORY_SER trying to figure out how it works, and I
cannot find any documentation on that. Do you have a link for that?

If what DISK_AND_MEMORY_SER does is reading and writing to the disk with
some memory caching, does that mean the output will be written to disk for
each join, and then read back into memory for the next join? If so, how it
is more performant than HIVE query model?

Again I am new to this, so I might ask something stupid.

Thanks,
JT




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