dcapwell commented on code in PR #108:
URL: https://github.com/apache/cassandra-accord/pull/108#discussion_r1702230147
##########
accord-core/src/main/java/accord/topology/Topologies.java:
##########
@@ -64,6 +64,11 @@ default boolean isEmpty()
Set<Node.Id> nodes();
+ default Set<Node.Id> nonStaleNodes()
+ {
+ throw new UnsupportedOperationException();
Review Comment:
why? this can't be accepted for any impl so by not defining it makes it
clear to know where to add; no?
##########
accord-core/src/main/java/accord/topology/Topologies.java:
##########
@@ -64,6 +64,11 @@ default boolean isEmpty()
Set<Node.Id> nodes();
+ default Set<Node.Id> nonStaleNodes()
+ {
+ throw new UnsupportedOperationException();
Review Comment:
if you want to block in `Multi` then we should be more explicit about
that... and the callers of this should enforce we don't have multi (which is
allowed for RX transactions)
##########
accord-core/src/main/java/accord/topology/Topology.java:
##########
@@ -60,8 +61,10 @@ public class Topology
{
public static final long EMPTY_EPOCH = 0;
private static final int[] EMPTY_SUBSET = new int[0];
- public static final Topology EMPTY = new Topology(null, EMPTY_EPOCH, new
Shard[0], Ranges.EMPTY, Collections.emptyMap(), Ranges.EMPTY, EMPTY_SUBSET);
+ public static final Topology EMPTY = new Topology(null, EMPTY_EPOCH,
Collections.emptySet(), new Shard[0], Ranges.EMPTY, Collections.emptyMap(),
Ranges.EMPTY, EMPTY_SUBSET);
+
final long epoch;
+ final Set<Id> staleIds;
Review Comment:
to keep the pattern shouldn't this be in `Shard`? In C* we cache things, so
we won't have a ton of duplicates.
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