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Connor f32a311f0d Fix compliation error on GCC4.8.2 (#6106) 
Summary:
```
In file included from /usr/include/c++/4.8.2/algorithm:62:0,
                 from ./db/merge_context.h:7,
                 from ./db/dbformat.h:16,
                 from ./tools/block_cache_analyzer/block_cache_trace_analyzer.h:12,
                 from tools/block_cache_analyzer/block_cache_trace_analyzer.cc:8:
/usr/include/c++/4.8.2/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::basic_string<char>, long unsigned int>*, std::vector<std::pair<std::basic_string<char>, long unsigned int> > >; _Tp = std::pair<std::basic_string<char>, long unsigned int>; _Compare = rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1]’:
/usr/include/c++/4.8.2/bits/stl_algo.h:2296:78:   required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::basic_string<char>, long unsigned int>*, std::vector<std::pair<std::basic_string<char>, long unsigned int> > >; _Compare = rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1]’
/usr/include/c++/4.8.2/bits/stl_algo.h:2337:62:   required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<std::pair<std::basic_string<char>, long unsigned int>*, std::vector<std::pair<std::basic_string<char>, long unsigned int> > >; _Size = long int; _Compare = rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1]’
/usr/include/c++/4.8.2/bits/stl_algo.h:5499:44:   required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<std::pair<std::basic_string<char>, long unsigned int>*, std::vector<std::pair<std::basic_string<char>, long unsigned int> > >; _Compare = rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1’
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:583:79:   required from here
/usr/include/c++/4.8.2/bits/stl_algo.h:2263:35: error: no match for call to ‘(rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1) (std::pair<std::basic_string<char>, long unsigned int>&, const std::pair<std::basic_string<char>, long unsigned int>&)’
    while (__comp(*__first, __pivot))
                                   ^
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:582:9: note: candidates are:
       [=](std::pair<std::string, uint64_t>& a,
         ^
In file included from /usr/include/c++/4.8.2/algorithm:62:0,
                 from ./db/merge_context.h:7,
                 from ./db/dbformat.h:16,
                 from ./tools/block_cache_analyzer/block_cache_trace_analyzer.h:12,
                 from tools/block_cache_analyzer/block_cache_trace_analyzer.cc:8:
/usr/include/c++/4.8.2/bits/stl_algo.h:2263:35: note: bool (*)(std::pair<std::basic_string<char>, long unsigned int>&, std::pair<std::basic_string<char>, long unsigned int>&) <conversion>
    while (__comp(*__first, __pivot))
                                   ^
/usr/include/c++/4.8.2/bits/stl_algo.h:2263:35: note:   candidate expects 3 arguments, 3 provided
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:583:46: note: rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1
           std::pair<std::string, uint64_t>& b) { return b.second < a.second; });
                                              ^
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:583:46: note:   no known conversion for argument 2 from ‘const std::pair<std::basic_string<char>, long unsigned int>’ to ‘std::pair<std::basic_string<char>, long unsigned int>&’
In file included from /usr/include/c++/4.8.2/algorithm:62:0,
                 from ./db/merge_context.h:7,
                 from ./db/dbformat.h:16,
                 from ./tools/block_cache_analyzer/block_cache_trace_analyzer.h:12,
                 from tools/block_cache_analyzer/block_cache_trace_analyzer.cc:8:
/usr/include/c++/4.8.2/bits/stl_algo.h:2266:34: error: no match for call to ‘(rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1) (const std::pair<std::basic_string<char>, long unsigned int>&, std::pair<std::basic_string<char>, long unsigned int>&)’
    while (__comp(__pivot, *__last))
                                  ^
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:582:9: note: candidates are:
       [=](std::pair<std::string, uint64_t>& a,
         ^
In file included from /usr/include/c++/4.8.2/algorithm:62:0,
                 from ./db/merge_context.h:7,
                 from ./db/dbformat.h:16,
                 from ./tools/block_cache_analyzer/block_cache_trace_analyzer.h:12,
                 from tools/block_cache_analyzer/block_cache_trace_analyzer.cc:8:
/usr/include/c++/4.8.2/bits/stl_algo.h:2266:34: note: bool (*)(std::pair<std::basic_string<char>, long unsigned int>&, std::pair<std::basic_string<char>, long unsigned int>&) <conversion>
    while (__comp(__pivot, *__last))
                                  ^
/usr/include/c++/4.8.2/bits/stl_algo.h:2266:34: note:   candidate expects 3 arguments, 3 provided
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:583:46: note: rocksdb::BlockCacheTraceAnalyzer::WriteSkewness(const string&, const std::vector<long unsigned int>&, rocksdb::TraceType) const::__lambda1
           std::pair<std::string, uint64_t>& b) { return b.second < a.second; });
                                              ^
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:583:46: note:   no known conversion for argument 1 from ‘const std::pair<std::basic_string<char>, long unsigned int>’ to ‘std::pair<std::basic_string<char>, long unsigned int>&’
```
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6106

Differential Revision: D18783943

Pulled By: riversand963

fbshipit-source-id: cc7fc10565f0210b9eebf46b95cb4950ec0b15fa
 		2019-12-03 11:59:21 -08:00
..
__init__.py Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610) 2019-07-26 14:41:13 -07:00
block_cache_pysim.py Pysim more algorithms (#5644) 2019-08-06 18:50:59 -07:00
block_cache_pysim.sh Pysim more algorithms (#5644) 2019-08-06 18:50:59 -07:00
block_cache_pysim_test.py Pysim more algorithms (#5644) 2019-08-06 18:50:59 -07:00
block_cache_trace_analyzer.cc Fix compliation error on GCC4.8.2 (#6106) 2019-12-03 11:59:21 -08:00
block_cache_trace_analyzer.h Fix compilation under MSVC VS2015 (#6081) 2019-11-26 18:24:09 -08:00
block_cache_trace_analyzer_plot.py Block cache analyzer: python script to plot graphs (#5673) 2019-08-05 18:35:52 -07:00
block_cache_trace_analyzer_test.cc Block cache analyzer: Support reading from human readable trace file. (#5679) 2019-08-09 13:13:54 -07:00
block_cache_trace_analyzer_tool.cc Block cache simulator: Add pysim to simulate caches using reinforcement learning. (#5610) 2019-07-26 14:41:13 -07:00