excuse me , if i have single spout and single bolt and the bolt doing 2
process so can i do like this
builder.setSpout("MySpout", new mySpout(), 1);
builder.setBolt("MyBolt", new MyBolt(), 4).shuffleGrouping("MySpout"); i
found this example but couldn't know why he use number 4 ?On Mon, Jan 23, 2017 at 1:13 PM, sam mohel <[email protected]> wrote: > thanks for replying > > On Mon, Jan 23, 2017 at 1:14 PM, Arun Mahadevan <[email protected]> wrote: > >> >> >> Grouping makes sense only when you have more than one task for a bolt. If >> your bolt has more than one task, then the grouping will decide how the >> tuples from the spout are distributed to the individual tasks of the bolt. >> (shuffe = random, fields = keyed on some field and so on). >> >> >> >> See http://storm.apache.org/releases/current/Concepts.html >> >> >> >> Thanks, >> >> Arun >> >> >> >> >> >> *From: *sam mohel <[email protected]> >> *Reply-To: *"[email protected]" <[email protected]> >> *Date: *Monday, January 23, 2017 at 3:09 PM >> *To: *"[email protected]" <[email protected]>, " >> [email protected]" <[email protected]> >> *Subject: *simple question about grouping >> >> >> >> i have text file contains data . size of this file is 3.5 MB . My >> topology consists of one spout and one bolt so is that possible to make all >> processing in one bolt and in this case what is the role of grouping here ? >> >> Thanks in advance >> > >
