public Map<Token, Float> describeOwnership(List<Token> sortedTokens) {
// allTokens will contain the count and be returned, sorted_ranges is shorthand for
// token<->token math.
Map<Token, Float> allTokens = new HashMap<Token, Float>();
List<Range<Token>> sortedRanges = new ArrayList<Range<Token>>();
// this initializes the counts to 0 and calcs the ranges in order.
Token lastToken = sortedTokens.get(sortedTokens.size() - 1);
for (Token node : sortedTokens) {
allTokens.put(node, new Float(0.0));
sortedRanges.add(new Range<Token>(lastToken, node));
lastToken = node;
}
for (String ks : Schema.instance.getKeyspaces()) {
for (CFMetaData cfmd : Schema.instance.getKSMetaData(ks).cfMetaData().values()) {
for (Range<Token> r : sortedRanges) {
// Looping over every KS:CF:Range, get the splits size and add it to the count
allTokens.put(
r.right,
allTokens.get(r.right)
+ StorageService.instance.getSplits(ks, cfmd.cfName, r, 1).size());
}
}
}
// Sum every count up and divide count/total for the fractional ownership.
Float total = new Float(0.0);
for (Float f : allTokens.values()) total += f;
for (Map.Entry<Token, Float> row : allTokens.entrySet())
allTokens.put(row.getKey(), row.getValue() / total);
return allTokens;
}
public UnfilteredRowIterator next() {
Map.Entry<PartitionPosition, AtomicBTreePartition> entry = iter.next();
// Actual stored key should be true DecoratedKey
assert entry.getKey() instanceof DecoratedKey;
DecoratedKey key = (DecoratedKey) entry.getKey();
ClusteringIndexFilter filter = dataRange.clusteringIndexFilter(key);
return filter.getUnfilteredRowIterator(columnFilter, entry.getValue());
}
private int findMinLocalDeletionTime(
Iterator<Map.Entry<PartitionPosition, AtomicBTreePartition>> iterator) {
int minLocalDeletionTime = Integer.MAX_VALUE;
while (iterator.hasNext()) {
Map.Entry<PartitionPosition, AtomicBTreePartition> entry = iterator.next();
minLocalDeletionTime =
Math.min(minLocalDeletionTime, entry.getValue().stats().minLocalDeletionTime);
}
return minLocalDeletionTime;
}
public PartitionColumns get() {
PartitionColumns.Builder builder = PartitionColumns.builder();
for (Map.Entry<ColumnDefinition, AtomicBoolean> e : predefined.entrySet())
if (e.getValue().get()) builder.add(e.getKey());
return builder.addAll(extra).build();
}
