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Merge commit 'a60bd376108f71fccf40001c1496f32c11137fe4' into develop

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This commit is contained in:
Markus Mäkelä
2019-06-18 15:41:09 +03:00
parent ca532ec769 a60bd37610
commit 64d25a48bd
7 changed files with 285 additions and 280 deletions
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35
server/modules/routing/readwritesplit/rwsplitsession.cc
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@ -1151,34 +1151,23 @@ bool RWSplitSession::handle_error_new_connection(DCB* backend_dcb, GWBUF* errmsg
mxb_assert(m_expected_responses > 0);
m_expected_responses--;
/**
* A query was sent through the backend and it is waiting for a reply.
* Try to reroute the statement to a working server or send an error
* to the client.
*/
GWBUF* stored = m_current_query.release();
// Route stored queries if this was the last server we expected a response from
route_stored = m_expected_responses == 0;
if (stored && m_config.retry_failed_reads)
if (!backend->has_session_commands())
{
mxb_assert(m_expected_responses == 0);
MXS_INFO("Re-routing failed read after server '%s' failed", backend->name());
retry_query(stored, 0);
}
else
{
gwbuf_free(stored);
if (!backend->has_session_commands())
// The backend was busy executing command and the client is expecting a response.
if (m_current_query.get() && m_config.retry_failed_reads)
{
/** The backend was not executing a session command so the client
* is expecting a response. Send an error so they know to proceed. */
m_client->func.write(m_client, gwbuf_clone(errmsg));
MXS_INFO("Re-routing failed read after server '%s' failed", backend->name());
route_stored = false;
retry_query(m_current_query.release(), 0);
}
if (m_expected_responses == 0)
else
{
// This was the last response, try to route pending queries
route_stored = true;
// Send an error so that the client knows to proceed.
m_client->func.write(m_client, gwbuf_clone(errmsg));
m_current_query.reset();
}
}
}