plan

type RequestPlan struct {
	// This is simply the ranges that exist and are
	// considered in the request. Further process will deal with the
	// existence or non-existence of the current partials and full stores.
	// And they will decide whether to schedule work or not.
	BuildStores *block.Range

	// Whether to process the last map stage.
	//
	// In development mode,
	// we only care about processing the stores up to the handoff block,
	// which then kicks in the linear mode, which will then output its
	// results.
	// In production mode, we will want that mapper to be produced
	// to generate the ExecOut files, and kick off the ExecOutWalker
	// here to output the results.
	//
	// WriteExecOut will always have a start block on the boundary,
	// so the reading process needs to take into account the _start block_
	// at which it wants to send the data over. Production of map output
	// requires stores to be aligned, so needs to start from previous
	// store snapshots.
	WriteExecOut *block.Range // Can be nil

	// When WriteExecOut produces files, we might want to start reading
	// blocks only a bit further down a file (if boundary is at 20,
	// the request's start block might be 25). This will instruct
	// the output stream to start at that block number.
	ReadExecOut *block.Range

	// Range that will be produced by the linear pipeline. Could have no end.
	LinearPipeline *block.Range
	// contains filtered or unexported fields
}