long topVer = req.topologyVersion();
boolean checkReaders = hasNear || ctx.discovery().hasNearCache(name(), topVer);
try {
GridCacheOperation op;
if (putMap != null) {
// If fast mapping, filter primary keys for write to store.
Map<K, V> storeMap = req.fastMap() ?
F.view(putMap, new P1<K>() {