Examples of com.yahoo.ycsb.generator.SkewedLatestGenerator

com.yahoo.ycsb.generator.SkewedLatestGenerator
Generate a popularity distribution of items, skewed to favor recent items significantly more than older items.

      
      keychooser=new ScrambledZipfianGenerator(recordcount+expectednewkeys);
    }
    else if (requestdistrib.compareTo("latest")==0)
    {
      keychooser=new SkewedLatestGenerator(transactioninsertkeysequence);
    }
    else if (requestdistrib.equals("hotspot")) 
    {
      double hotsetfraction = Double.parseDouble(p.getProperty(
          HOTSPOT_DATA_FRACTION, HOTSPOT_DATA_FRACTION_DEFAULT));

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                                            // factor


      keychooser = new ScrambledZipfianGenerator(recordcount
          + expectednewkeys);
    } else if (Config.getConfig().request_distribution.compareTo("latest") == 0) {
      keychooser = new SkewedLatestGenerator(transactioninsertkeysequence);
    }  else if (Config.getConfig().request_distribution.compareTo("churn") == 0){
      keychooser = new ChurnGenerator(Config.getConfig().working_set, Config.getConfig().churn_delta, recordcount);
    } else {
      throw new WorkloadException("Unknown distribution \"" + Config.getConfig().request_distribution + "\"");
    }

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      int opcount = Config.getConfig().operation_count;
      int expectednewkeys = (int) (((double) opcount) * Config.getConfig().memset_proportion * 2.0); // 2 is fudge factor
      keychooser = new ScrambledZipfianGenerator(recordcount + expectednewkeys);
    } else if (Config.getConfig().request_distribution.compareTo("latest") == 0) {
      keychooser = new SkewedLatestGenerator(transactioninsertkeysequence);
    } else if (Config.getConfig().request_distribution.compareTo("churn") == 0){
      keychooser = new ChurnGenerator(Config.getConfig().working_set, Config.getConfig().churn_delta, recordcount);
    } else {
      throw new WorkloadException("Unknown distribution \"" + Config.getConfig().request_distribution + "\"");
    }

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Related Classes of com.yahoo.ycsb.generator.SkewedLatestGenerator

com.yahoo.ycsb.workloads.CoreWorkload

com.yahoo.ycsb.workloads.DBCoreWorkload

com.yahoo.ycsb.workloads.MemcachedCoreWorkload

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