If you initiate the CSV import via script using the

N/task

module, then it's possible to get the task status back, and you could submit further tasks, such as a MapReduceScriptTask, based on completion of the CsvImportTask. However, I don't think you can easily run a Map/Reduce script only against the records from a particular import, though you could record the timestamp when the import started and completed, and use those to filter search results in the Map/Reduce script.

Thanks a lot Scott, but CSV import will be done through regular CSV import page. So end user has the flexibility to upload required file directly and adjust fields as needed. Agree on your second point, we need to filter records to list on which map/reduce has to process.