This is a mutable threadsafe store for attaching scalding
information to the mutable flowDef
NOTE: there is a subtle bug in scala regarding case classes
with multiple sets of arguments, and their equality.
For this reason, we use Source.sourceId as the key in this map
This is a mutable threadsafe store for attaching scalding information to the mutable flowDef
NOTE: there is a subtle bug in scala regarding case classes with multiple sets of arguments, and their equality. For this reason, we use Source.sourceId as the key in this map