c523bf74b8
The tests were consistently unstable and as a result of this did not provide any actionable output. In addition to this these two test were the longest running tests in the whole MaxScale test suite so a re-design was warranted. Instead of emulating a client and a server failure, testing functionality provides for a test that is faster, more precise and provides more actionable output. Due to the single-threadedness of the new test, no cross-thread depencies are present. In addition to this, the superfluous log flushing was not done as it almost always happened after all transactions were already complete. The estimated savings in test time alone is around 1100 seconds (roughly 18 minutes).
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
/**
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* @file binlog_change_master.cpp In the binlog router setup stop Master and promote one of the Slaves to be
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* new Master
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* - setup binlog
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* - start thread wich executes transactions
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* - block master
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* - transaction thread tries to elect a new master a continue with new master
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* - continue transaction with new master
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* - stop transactions
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* - wait
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* - check data on all nodes
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*/
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#include "testconnections.h"
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#include "binlog_change_master_common.cpp"
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int main(int argc, char* argv[])
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{
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TestConnections test(argc, argv);
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auto cb = [&](MYSQL* blr) {
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// Get the name of the current binlog
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std::string file = get_row(test.repl->nodes[0], "SHOW MASTER STATUS")[0];
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std::string target = get_row(test.repl->nodes[2], "SHOW MASTER STATUS")[0];
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// Flush logs until the candidate master has a higher binlog sequence number
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while (target.back() <= file.back())
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{
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execute_query(test.repl->nodes[2], "FLUSH LOGS");
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target = get_row(test.repl->nodes[2], "SHOW MASTER STATUS")[0];
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}
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// Promote the candidate master by pointing the binlogrouter at it
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test.try_query(blr, "STOP SLAVE");
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test.try_query(blr, "CHANGE MASTER TO MASTER_HOST='%s', MASTER_PORT=%d,"
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"MASTER_LOG_FILE='%s', MASTER_LOG_POS=4",
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test.repl->IP[2], test.repl->port[2], target.c_str());
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test.try_query(blr, "START SLAVE");
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};
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run_test(test, cb);
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return test.global_result;
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}
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