Apart from user defined broadcast variable, there are others which is being created by spark. This could be one of those.
As I had mentioned you can do a small program where you create a broadcast variable. Check the broadcast variable id(say its x). Then go to the /tmp to open broadcast_x file. You will find the content is serialized output of your variable. On Mon, Apr 28, 2014 at 4:26 PM, wxhsdp <wxh...@gmail.com> wrote: > thank you for your help, Sourav. > i found broadcast_0 binary file in /tmp directory. it's size is 33.4kB, not > equal to estimated size 135.6 KB. > i opened it and found it's content has no relations with my read in file. i > guess broadcast_0 is a config > file about spark, is that right? > > > > -- > View this message in context: > http://apache-spark-user-list.1001560.n3.nabble.com/what-does-broadcast-0-stand-for-tp4934p4936.html > Sent from the Apache Spark User List mailing list archive at Nabble.com. > -- Sourav Chandra Senior Software Engineer · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · sourav.chan...@livestream.com o: +91 80 4121 8723 m: +91 988 699 3746 skype: sourav.chandra Livestream "Ajmera Summit", First Floor, #3/D, 68 Ward, 3rd Cross, 7th C Main, 3rd Block, Koramangala Industrial Area, Bangalore 560034 www.livestream.com