Some operations like map, filter, flatMap and coalesce (with shuffle=false) usually preserve the order. However, sortBy, reduceBy, partitionBy, join etc. do not.
Regards, _________________________________ *Md. Rezaul Karim*, BSc, MSc PhD Researcher, INSIGHT Centre for Data Analytics National University of Ireland, Galway IDA Business Park, Dangan, Galway, Ireland Web: http://www.reza-analytics.eu/index.html <http://139.59.184.114/index.html> On 27 January 2017 at 09:44, Soheila S. <soheila...@gmail.com> wrote: > Hi All, > I read a test file using sparkContext.textfile(filename) and assign it to > an RDD and process the RDD (replace some words) and finally write it to > a text file using rdd.saveAsTextFile(output). > Is there any way to be sure the order of the sentences will not be > changed? I need to have the same text with some corrected words. > > thanks! > > Soheila >
