Summary: Using an iterator instead of the Get method, each thread goes through a portion of the database and verifies values by comparing to the shared state.
Test Plan:
./db_stress --db=/tmp/tmppp --max_key=10000 --ops_per_thread=10000
To test some basic cases, the following lines can be added (each set in turn) to the verifyDb method with the following expected results:
// Should abort with "Unexpected value found"
shared.Delete(start);
// Should abort with "Value not found"
WriteOptions write_opts;
db_->Delete(write_opts, Key(start));
// Should succeed
WriteOptions write_opts;
shared.Delete(start);
db_->Delete(write_opts, Key(start));
// Should abort with "Value not found"
WriteOptions write_opts;
db_->Delete(write_opts, Key(start + (end-start)/2));
// Should abort with "Value not found"
db_->Delete(write_opts, Key(end-1));
// Should abort with "Unexpected value"
shared.Delete(end-1);
// Should abort with "Unexpected value"
shared.Delete(start + (end-start)/2);
// Should abort with "Value not found"
db_->Delete(write_opts, Key(start));
shared.Delete(start);
db_->Delete(write_opts, Key(end-1));
db_->Delete(write_opts, Key(end-2));
To test the out of range abort, change the key in the for loop to Key(i+1), so that the key defined by the index i is now outside of the supposed range of the database.
Reviewers: emayanke
Reviewed By: emayanke
CC: dhruba, xjin
Differential Revision: https://reviews.facebook.net/D13071
7edb92b843