/**
* Log task mapped.
*
* @param log Logger.
* @param clazz Task class.
* @param nodes Mapped nodes.
*/
public static void logMapped(
@Nullable IgniteLogger log, Class<?> clazz, Collection<ClusterNode> nodes) {
log0(
log,
U.currentTimeMillis(),
String.format("[%s]: MAPPED: %s", clazz.getSimpleName(), U.toShortString(nodes)));
}
/**
* @param mappings Mappings.
* @param key Key to map.
* @param locVals Local values.
* @param topVer Topology version.
* @param mapped Previously mapped.
* @return {@code True} if has remote nodes.
*/
@SuppressWarnings("ConstantConditions")
private boolean map(
KeyCacheObject key,
Map<ClusterNode, LinkedHashMap<KeyCacheObject, Boolean>> mappings,
Map<K, V> locVals,
AffinityTopologyVersion topVer,
Map<ClusterNode, LinkedHashMap<KeyCacheObject, Boolean>> mapped) {
int part = cctx.affinity().partition(key);
List<ClusterNode> affNodes = cctx.affinity().nodes(part, topVer);
if (affNodes.isEmpty()) {
onDone(serverNotFoundError(topVer));
return false;
}
boolean fastLocGet =
(!forcePrimary || affNodes.get(0).isLocal())
&& cctx.allowFastLocalRead(part, affNodes, topVer);
if (fastLocGet && localGet(key, part, locVals)) return false;
ClusterNode node = affinityNode(affNodes);
if (node == null) {
onDone(serverNotFoundError(topVer));
return false;
}
boolean remote = !node.isLocal();
LinkedHashMap<KeyCacheObject, Boolean> keys = mapped.get(node);
if (keys != null && keys.containsKey(key)) {
if (REMAP_CNT_UPD.incrementAndGet(this) > MAX_REMAP_CNT) {
onDone(
new ClusterTopologyCheckedException(
"Failed to remap key to a new node after "
+ MAX_REMAP_CNT
+ " attempts (key got remapped to the same node) [key="
+ key
+ ", node="
+ U.toShortString(node)
+ ", mappings="
+ mapped
+ ']'));
return false;
}
}
LinkedHashMap<KeyCacheObject, Boolean> old = mappings.get(node);
if (old == null) mappings.put(node, old = new LinkedHashMap<>(3, 1f));
old.put(key, false);
return remote;
}