Re: Multiple writers to datastore ?

2014-04-28 Thread Nathan Leung
It depends on your specific application, but if you are modifying specific rows based on an index you can do fields grouping by that index so that only one bolt will ever update a particular row. On Mon, Apr 28, 2014 at 6:40 PM, Raphael Hsieh wrote: > How does Storm handle multiple writers writ

Multiple writers to datastore ?

2014-04-28 Thread Raphael Hsieh
How does Storm handle multiple writers writing data to an external datastore ? If there are multiple workers working to process the data, each of them must also do the "write" to the database. If there are multiple writers to the database that are storing data, how does it make sure that the writer