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Revision cf98df34c1f812ed6c285110dceb5558f1ced92f authored by Maysam Yabandeh on 20 February 2019, 03:55:30 UTC, committed by Facebook Github Bot on 20 February 2019, 03:58:55 UTC 
Change random seed for txn stress tests on each run (#5004)
 
Summary:
Currently the transaction stress tests use thread id as the seed. Since the thread ids are likely to be the same across multiple runs, the seed is thus going to be the same. The patch includes time in calculating the seed to help covering a very different part of state space in each run of the stress tests. To be able to reproduce the bug in case the stress tests failed, it also prints out the time that was used to calculate the seed value.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5004

Differential Revision: D14144356

Pulled By: maysamyabandeh

fbshipit-source-id: 728ed522f550fc8b4f5f9f373259c05fe9a54556
1 parent 0f4244f
Raw File
iter_heap.h 
//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).
//

#pragma once

#include "db/dbformat.h"
#include "table/iterator_wrapper.h"

namespace rocksdb {

// When used with std::priority_queue, this comparison functor puts the
// iterator with the max/largest key on top.
class MaxIteratorComparator {
 public:
  MaxIteratorComparator(const InternalKeyComparator* comparator)
      : comparator_(comparator) {}

  bool operator()(IteratorWrapper* a, IteratorWrapper* b) const {
    return comparator_->Compare(a->key(), b->key()) < 0;
  }
 private:
  const InternalKeyComparator* comparator_;
};

// When used with std::priority_queue, this comparison functor puts the
// iterator with the min/smallest key on top.
class MinIteratorComparator {
 public:
  MinIteratorComparator(const InternalKeyComparator* comparator)
      : comparator_(comparator) {}

  bool operator()(IteratorWrapper* a, IteratorWrapper* b) const {
    return comparator_->Compare(a->key(), b->key()) > 0;
  }
 private:
  const InternalKeyComparator* comparator_;
};

}  // namespace rocksdb
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