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verify_server_variables() -> Change assert to warning + Various improvements #5163

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Merged
merged 3 commits into from
Oct 17, 2025
+50 −27
Merged

verify_server_variables() -> Change assert to warning + Various improvements #5163

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288b0da
verify_server_variables -> Change assert to warning
rahim-kanji Oct 15, 2025
91c6744
Few fixes
rahim-kanji Oct 16, 2025
ed20d09
Replaced std::get_if with std::visit
rahim-kanji Oct 16, 2025
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11 changes: 10 additions & 1 deletion lib/PgSQL_ExplicitTxnStateMgr.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,16 @@ void verify_server_variables(PgSQL_Session* session) {
const char* conn_param_status = session->mybe->server_myds->myconn->get_pg_parameter_status(pgsql_tracked_variables[idx].set_variable_name);
const char* param_value = session->mybe->server_myds->myconn->variables[idx].value;
if (conn_param_status && param_value) {
assert(strcmp(conn_param_status, param_value) == 0);
//assert(strcmp(conn_param_status, param_value) == 0);
if (strcmp(conn_param_status, param_value) != 0) {
// This isn’t actually a bug, but it can occur in an edge case — for example, when a COPY FROM STDIN fails.
// In that situation, the ParameterStatus message sent from the server is received and forwarded to the client
// via fast-forwarding, so the internal ParameterStatus in libpq isn’t updated.
proxy_warning("Server variable '%s' mismatch. Parameter status value: '%s', Expected value: '%s'\n",
pgsql_tracked_variables[idx].set_variable_name,
conn_param_status,
param_value);
}
}
}
#endif
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