I'm using LAFuture.collect from Lift 3 Snapshot to collect 3 futures into one. It sometimes throws an IndexOutOfBoundsException at me.
The reason is this line:
val vals = new collection.mutable.ArrayBufferBox[T]
which defines the result array. Later, when future 2 is satisfied before future 1 it tries to insert it at a index that does not yet exist, thus throwing the exception.
The fix I found was to pad the array with Empty's and then later in the foreach write a Full into it.
Here's the repl that produces the exception:
scala> new collection.mutable.ArrayBufferInt
res0: scala.collection.mutable.ArrayBuffer[Int] = ArrayBuffer()
scala> res0.insert(2, 4)
Issue #1453: LAFuture.collect crashes when futures are resolved out o…