fn encode_batch(
header: Header,
entries: Vec<Entry>,
releases: &BTreeMap<RegionId, EntryId>,
) -> Result<EncodedObject>Expand description
Encodes the entries of a batch, and its release records as the single
entry of RELEASE_REGION_ID, whose id is at position 1 of the object;
segments are ordered by region id, so it is the last segment.