}
this.transactionInit_handler = new TransactionInitHandler(hstore_site, this, this.transactionInit_dispatcher);
this.transactionWork_handler = new TransactionWorkHandler(hstore_site, this);
this.transactionPrefetch_handler = new TransactionPrefetchHandler(hstore_site, this);
this.transactionMap_handler = new TransactionMapHandler(hstore_site, this);
this.transactionReduce_handler = new TransactionReduceHandler(hstore_site,this);
this.transactionPrepare_handler = new TransactionPrepareHandler(hstore_site, this);
this.transactionFinish_handler = new TransactionFinishHandler(hstore_site, this, this.transactionFinish_dispatcher);
this.sendData_handler = new SendDataHandler(hstore_site, this);