I had like to be corrected on this but I am just trying to say small enough of the order of few 100 MBs. Imagine the size gets shipped to all nodes, it can be a GB but not GBs and then depends on the network too.
Prashant Sharma On Fri, May 2, 2014 at 6:42 PM, Diana Carroll <dcarr...@cloudera.com> wrote: > Anyone have any guidance on using a broadcast variable to ship data to > workers vs. an RDD? > > Like, say I'm joining web logs in an RDD with user account data. I could > keep the account data in an RDD or if it's "small", a broadcast variable > instead. How small is small? Small enough that I know it can easily fit > in memory on a single node? Some other guideline? > > Thanks! > > Diana >
