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testing #1544

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677172f
testing
Anshu6250 May 26, 2026
a46d017
test2
Anshu6250 May 26, 2026
1b9a8ab
test
Anshu6250 Jun 3, 2026
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2 changes: 2 additions & 0 deletions google/cloud/odbc/bq_client_interface/odbc_bq_client.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
#include "google/cloud/odbc/bq_client_interface/datasets.h"
#include "google/cloud/odbc/bq_client_interface/jobs.h"
#include "google/cloud/odbc/bq_client_interface/odbc_authentication.h"
#include "google/cloud/odbc/bq_client_interface/setenv.h"
#include "google/cloud/odbc/bq_client_interface/projects.h"
#include "google/cloud/odbc/bq_client_interface/storage.h"
#include "google/cloud/odbc/bq_client_interface/tables.h"
Expand Down Expand Up @@ -292,6 +293,7 @@ StatusRecordOr<std::shared_ptr<ODBCBQClient>> ODBCBQClient::CreateBQClient(
read_options.set<google::cloud::GrpcCredentialOption>(ssl_creds);
}
#endif
SetEnv("GRPC_DNS_RESOLVER", "native");
BigQueryReadClient bigquery_read_client =
BigQueryReadClient(MakeBigQueryReadConnection(read_options));

Expand Down
37 changes: 36 additions & 1 deletion google/cloud/odbc/bq_driver/internal/odbc_sql_execute_utils.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -13,10 +13,12 @@
// limitations under the License.

#include "google/cloud/odbc/bq_driver/internal/odbc_sql_execute_utils.h"
#include "google/cloud/odbc/bq_client_interface/setenv.h"
#include "google/cloud/odbc/bq_client_interface/utils.h"
#include "google/cloud/odbc/bq_driver/internal/odbc_internal_commons.h"
#include "google/cloud/odbc/bq_driver/internal/trace_utils.h"
#include <thread>
#include <cstdlib>

//////////////////////////////////////////////////////////////////
// This file has query execution related utilities which can have
Expand Down Expand Up @@ -47,6 +49,13 @@ using google::cloud::odbc_bq_driver_internal::StatementHandle;
using google::cloud::odbc_internal::SQLStates;
using chrono_ms = std::chrono::milliseconds;

#if (!defined(_WIN32) || defined(_WIN64)) && !defined(NO_ARROW)
bool IsGrpcDnsResolverError(StatusRecord const& status) {
return status.message.find("hostname lookup error") != std::string::npos ||
status.message.find("DNS query cancelled") != std::string::npos;
}
#endif // (!defined(_WIN32) || defined(_WIN64)) && !defined(NO_ARROW)

StatusRecord ConstructPositionalQueryParams(
DescriptorHandle& apd, DescriptorHandle& ipd,
std::vector<QueryParameter>& basic_query_params, bool is_data_buff_req) {
Expand Down Expand Up @@ -596,7 +605,20 @@ StatusRecord FetchBQDataReadArrow(StatementHandle& stmt_handle,
auto read_session_status =
bq_client->CreateReadSession(create_read_session_request, options);
if (!read_session_status) {
return read_session_status.GetStatusRecord();
StatusRecord status = read_session_status.GetStatusRecord();
if (!IsGrpcDnsResolverError(status)) {
return status;
}
#ifdef _WIN32
_putenv_s("GRPC_DNS_RESOLVER", "native");
#else
setenv("GRPC_DNS_RESOLVER", "native", 1);
#endif
read_session_status =
bq_client->CreateReadSession(create_read_session_request, options);
if (!read_session_status) {
return read_session_status.GetStatusRecord();
}
}

auto session = *read_session_status;
Expand Down Expand Up @@ -624,6 +646,19 @@ StatusRecord FetchBQDataReadArrow(StatementHandle& stmt_handle,
read_rows_stream =
bq_client->GetReadRowsStream(read_rows_request, options);
stmt_handle.SetReadRowsStream(std::move(read_rows_stream));
StatusRecord status = ReadNextResultsFromStream(stmt_handle);
if (status.ok() || !IsGrpcDnsResolverError(status)) {
return status;
}
#ifdef _WIN32
_putenv_s("GRPC_DNS_RESOLVER", "native");
#else
setenv("GRPC_DNS_RESOLVER", "native", 1);
#endif
stmt_handle.ClearReadRowsStream();
stmt_handle.ClearReadRowsIterator();
read_rows_stream = bq_client->GetReadRowsStream(read_rows_request, options);
stmt_handle.SetReadRowsStream(std::move(read_rows_stream));
return ReadNextResultsFromStream(stmt_handle);
}

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