alinaliBQ commented on code in PR #47645:
URL: https://github.com/apache/arrow/pull/47645#discussion_r2388912917


##########
cpp/src/arrow/flight/sql/odbc/flight_sql/flight_sql_driver.cc:
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@@ -63,45 +53,36 @@ odbcabstraction::Diagnostics& 
FlightSqlDriver::GetDiagnostics() { return diagnos
 void FlightSqlDriver::SetVersion(std::string version) { version_ = 
std::move(version); }
 
 void FlightSqlDriver::RegisterLog() {
-  odbcabstraction::PropertyMap propertyMap;
-  driver::odbcabstraction::ReadConfigFile(propertyMap, CONFIG_FILE_NAME);
-
-  auto log_enable_iterator = propertyMap.find(SPDLogger::LOG_ENABLED);
-  auto log_enabled = log_enable_iterator != propertyMap.end()
-                         ? odbcabstraction::AsBool(log_enable_iterator->second)
-                         : false;
-  if (!log_enabled) {
+  std::string log_level_str = arrow::internal::GetEnvVar(kODBCLogLevel)
+                                  .Map(arrow::internal::AsciiToLower)
+                                  .Map(arrow::internal::TrimString)
+                                  .ValueOr("");
+  if (log_level_str.empty()) {
     return;
   }
 
-  auto log_path_iterator = propertyMap.find(SPDLogger::LOG_PATH);
-  auto log_path = log_path_iterator != propertyMap.end() ? 
log_path_iterator->second : "";
-  if (log_path.empty()) {
-    return;
+  auto log_level = ArrowLogLevel::ARROW_DEBUG;
+
+  if (log_level_str == "fatal") {
+    log_level = ArrowLogLevel::ARROW_FATAL;
+  } else if (log_level_str == "error") {
+    log_level = ArrowLogLevel::ARROW_ERROR;
+  } else if (log_level_str == "warning") {
+    log_level = ArrowLogLevel::ARROW_WARNING;
+  } else if (log_level_str == "info") {
+    log_level = ArrowLogLevel::ARROW_INFO;
+  } else if (log_level_str == "debug") {
+    log_level = ArrowLogLevel::ARROW_DEBUG;
+  } else if (log_level_str == "trace") {
+    log_level = ArrowLogLevel::ARROW_TRACE;
   }
 
-  auto log_level_iterator = propertyMap.find(SPDLogger::LOG_LEVEL);
-  auto log_level = ToLogLevel(log_level_iterator != propertyMap.end()
-                                  ? std::stoi(log_level_iterator->second)
-                                  : 1);
-  if (log_level == odbcabstraction::LogLevel_OFF) {
-    return;
+  // Enable driver logging. Log files are not supported on Windows yet, since 
GLOG is not
+  // tested fully on Windows.
+  // Info log level is enabled by default.
+  if (log_level != ArrowLogLevel::ARROW_INFO) {

Review Comment:
   INFO logging is enabled in Arrow logging framework by default. I have tested 
this. So to ensure logging is enabled, we only need to call `StartArrowLog` if 
the log level is not INFO.



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