My kibana UI is responding very slow and some time stuck while searching . its setup on Dockers containers.
1 - Container - ElasticSearch
2 - Container LogStach
3 - Container Kibana
I check the logs of Elasticserach docker container on my Host server and i fould the below warnings.
is that can be the issue of slowness and stuck my Kibana
docker logs dockerelk_elasticsearch_1
[2018-10-30T10:25:54,480][WARN ][o.e.b.BootstrapChecks ] [vHE4RKF] max virtual memory areas vm.max_map_count  is too low, increase to at least 
[2018-10-30T10:48:21,871][WARN ][o.e.d.s.f.s.DocValueFieldsFetchSubPhase] Doc-value field [@timestamp] is not using a format. The output will change in 7.0 when doc value fields get formatted based on mappings by default. It is recommended to pass [format=use_field_mapping] with the doc value field in order to opt in for the future behaviour and ease the migration to 7.0.