def create_session(self, lang='hive', properties=None): application = 'beeswax' if lang == 'hive' or lang == 'llap' else lang if has_session_pool(): session = Session.objects.get_tez_session( self.user, application, MAX_NUMBER_OF_SESSIONS.get()) elif not has_multiple_sessions(): session = Session.objects.get_session(self.user, application=application) else: session = None reuse_session = session is not None if not reuse_session: db = dbms.get(self.user, query_server=get_query_server_config( name=lang, connector=self.interpreter)) session = db.open_session(self.user) response = {'type': lang, 'id': session.id} if not properties: config = None if USE_DEFAULT_CONFIGURATION.get(): config = DefaultConfiguration.objects.get_configuration_for_user( app=lang, user=self.user) if config is not None: properties = config.properties_list else: properties = self.get_properties(lang) response['properties'] = properties response['configuration'] = json.loads(session.properties) response['reuse_session'] = reuse_session response['session_id'] = '' try: decoded_guid = session.get_handle().sessionId.guid response['session_id'] = unpack_guid(decoded_guid) except Exception as e: LOG.warn('Failed to decode session handle: %s' % e) if lang == 'impala' and session: http_addr = _get_impala_server_url(session) response['http_addr'] = http_addr return response
def create_session(self, lang='hive', properties=None): application = 'beeswax' if lang == 'hive' or lang == 'llap' else lang uses_session_pool = has_session_pool() uses_multiple_sessions = has_multiple_sessions() if lang == 'impala': uses_session_pool = False uses_multiple_sessions = False try: if uses_session_pool: session = Session.objects.get_tez_session( self.user, application, MAX_NUMBER_OF_SESSIONS.get()) elif not uses_multiple_sessions: session = Session.objects.get_session(self.user, application=application) else: session = None except Exception as e: if 'Connection refused' in str( e) or 'Name or service not known' in str(e): LOG.exception( 'Connection being refused or service is not available in either session or in multiple sessions' '- HA failover') reset_ha() reuse_session = session is not None if not reuse_session: db = dbms.get(self.user, query_server=get_query_server_config( name=lang, connector=self.interpreter)) try: session = db.open_session(self.user) except Exception as e: if 'Connection refused' in str( e) or 'Name or service not known' in str(e): LOG.exception( 'Connection being refused or service is not available in reuse session - HA failover' ) reset_ha() response = {'type': lang, 'id': session.id} if not properties: config = None if USE_DEFAULT_CONFIGURATION.get(): config = DefaultConfiguration.objects.get_configuration_for_user( app=lang, user=self.user) if config is not None: properties = config.properties_list else: properties = self.get_properties(lang) response['properties'] = properties response['configuration'] = json.loads(session.properties) response['reuse_session'] = reuse_session response['session_id'] = '' try: decoded_guid = session.get_handle().sessionId.guid response['session_id'] = unpack_guid(decoded_guid) except Exception as e: LOG.warning('Failed to decode session handle: %s' % e) if lang == 'impala' and session: http_addr = _get_impala_server_url(session) response['http_addr'] = http_addr return response