Hi, My understanding is that the maximum size of a broadcast is the Long.MAX_VALUE (and plus some more since the data is going to be encoded to save space, esp. for catalyst-driver datasets).
Ad 2. Before the tasks access the broadcast variable it has to be sent across network that may be too slow to be acceptable. Pozdrawiam, Jacek Laskowski ---- https://medium.com/@jaceklaskowski/ Mastering Apache Spark http://bit.ly/mastering-apache-spark Follow me at https://twitter.com/jaceklaskowski On Thu, Jul 14, 2016 at 11:32 PM, Saravanan Subramanian <tosarva...@yahoo.com.invalid> wrote: > Hello All, > > I am in the middle of designing real time data enhancement services using > spark streaming. As part of this, I have to look up some reference data > while processing the incoming stream. > > I have below questions: > > 1) what is the maximum size of look up table / variable can be stored as > Broadcast variable () > 2) What is the impact of cluster performance, if I store a 10GB data in > broadcast variable > > Any suggestions and thoughts are welcome. > > Thanks, > Saravanan S. --------------------------------------------------------------------- To unsubscribe e-mail: user-unsubscr...@spark.apache.org
