What decides how many part files a sqoop import call creates?

[Marco Wentink]

I have a scoop process that is defined like this:

sqoop import --connect 'jdbc:sqlserver://${database_host};database=${database_name}' --username '${database_username}' --password '${database_password}' 
--table 'company_urls' --columns 'validated_url' --where "is_valid=1" --target-dir '${seed_path}/${country}' --delete-target-dir -m 4 --split-by id
if [ $? -eq 0 ]; then echo "--PENTAHO_SUCCESS--"; else echo "--PENTAHO_ERROR--"; fi

It creates 4 files named: part-m-00000, part-m-00001, part-m-00002, part-m-00003

My probably stupid novice question, but has the number of created files, 4, to do with the option '-m 4'? And that option has to do with the number of parallel processes you start, I've read that so far. Or is that number of 'part' files set in some other way?

[Marco Wentink]

Well, after half a day, yes I am novice, I managed to test it myself, and yes, if I make that number 5, I've got five parts.