ReadLabel¶
Purpose¶
The ReadLabel specifies which keys a transaction may and will read from. The rationale behind this information is that if a transaction definitely reads from a set of keys, the corresponding KVSReadRequests can be issued even before spawning an executor.
Structure¶
| Field | Type | Description |
|---|---|---|
will_read |
KVSKey set | in V1, this is a generic set of keys that will be read |
may_read |
KVSKey set | in V1, this is a generic set of keys that may be read |
From V2 onward, after imposing a tree-structure on keys (or something similar), we can represent potentially infinite sets of keys.
Notes¶
Occasionally, we refer to "may read"-keys also as lazy reads as they potentially only issued on demand.