public static String versionsToString(long[] versions, ClusterSnapshot clusterSnapshot) {
if (versions == null || versions.length == 0) {
return "[]";
} else if (clusterSnapshot != null && versions.length != clusterSnapshot.size()) {
return "[N/A]";
}
if (clusterSnapshot == null) {
if (versions.length == 1) {
return "[" + versions[0] + "]";
} else {
StringBuilder stringBuilder = new StringBuilder("[");
stringBuilder.append(versions[0]);
for (int i = 1; i < versions.length; ++i) {
stringBuilder.append(",").append(versions[i]);
}
return stringBuilder.append("]").toString();
}
}
if (versions.length == 1) {
return "[" + clusterSnapshot.get(0) + "=" + versions[0] + "]";
} else {
StringBuilder stringBuilder = new StringBuilder("[");
stringBuilder.append(clusterSnapshot.get(0)).append("=").append(versions[0]);
for (int i = 1; i < versions.length; ++i) {
stringBuilder.append(",").append(clusterSnapshot.get(i)).append("=").append(versions[i]);
}
return stringBuilder.append("]").toString();
}
}
/** calculates the object request list to request to each member */
public final synchronized void calculateAccesses() {
if (hasAccessesCalculated) {
return;
}
hasAccessesCalculated = true;
if (log.isTraceEnabled()) {
log.trace("Calculating accessed keys for data placement optimization");
}
RemoteTopKeyRequest request = new RemoteTopKeyRequest(streamLibContainer.getCapacity() * 2);
request.merge(streamLibContainer.getTopKFrom(REMOTE_PUT, maxNumberOfKeysToRequest), 2);
request.merge(streamLibContainer.getTopKFrom(REMOTE_GET, maxNumberOfKeysToRequest), 1);
sortObjectsByPrimaryOwner(request.toRequestMap(maxNumberOfKeysToRequest), true);
request.clear();
LocalTopKeyRequest localTopKeyRequest = new LocalTopKeyRequest();
localTopKeyRequest.merge(streamLibContainer.getTopKFrom(LOCAL_PUT), 2);
localTopKeyRequest.merge(streamLibContainer.getTopKFrom(LOCAL_GET), 1);
sortObjectsByPrimaryOwner(localTopKeyRequest.toRequestMap(), false);
request.clear();
if (log.isTraceEnabled()) {
StringBuilder stringBuilder = new StringBuilder("Accesses:\n");
for (int i = 0; i < accessesByPrimaryOwner.length; ++i) {
stringBuilder
.append(clusterSnapshot.get(i))
.append(" ==> ")
.append(accessesByPrimaryOwner[i])
.append("\n");
}
log.debug(stringBuilder);
}
streamLibContainer.resetStat(REMOTE_GET);
streamLibContainer.resetStat(LOCAL_GET);
streamLibContainer.resetStat(REMOTE_PUT);
streamLibContainer.resetStat(LOCAL_PUT);
}
