コード例 #1
0
    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;
    }
コード例 #2
0
      /**
       * Submit differencers for running. All tree *must* have been received before this is called.
       */
      public void submitDifferencers() {
        assert requestedEndpoints.size() == 0;

        // Right now, we only difference local host against each other. CASSANDRA-2610 will fix
        // that.
        // In the meantime ugly special casing will work good enough.
        MerkleTree localTree = trees.get(FBUtilities.getLocalAddress());
        assert localTree != null;
        for (Map.Entry<InetAddress, MerkleTree> entry : trees.entrySet()) {
          if (entry.getKey().equals(FBUtilities.getLocalAddress())) continue;

          Differencer differencer =
              new Differencer(cfname, entry.getKey(), entry.getValue(), localTree);
          syncJobs.add(entry.getKey());
          logger.debug("Queueing comparison " + differencer);
          StageManager.getStage(Stage.ANTI_ENTROPY).execute(differencer);
        }
        trees.clear(); // allows gc to do its thing
      }