yes,last logs belongs to my java project ,the logs appearenced when my project connent to elasticsearch .
I find the elasticsearch logs, it has exception in some nodes:
[2017-05-10T19:06:35,641][WARN ][o.e.x.m.MonitoringService] [node-210] monitoring execution failed
org.elasticsearch.xpack.monitoring.exporter.ExportException: Exception when closing export bulk
at org.elasticsearch.xpack.monitoring.exporter.ExportBulk$1$1.(ExportBulk.java:106) ~[?:?]
at org.elasticsearch.xpack.monitoring.exporter.ExportBulk$1.onFailure(ExportBulk.java:104) ~[?:?]
at org.elasticsearch.xpack.monitoring.exporter.ExportBulk$Compound$1.onResponse(ExportBulk.java:217) ~[?:?]
at org.elasticsearch.xpack.monitoring.exporter.ExportBulk$Compound$1.onResponse(ExportBulk.java:211) ~[?:?]
at org.elasticsearch.xpack.common.IteratingActionListener.onResponse(IteratingActionListener.java:108) ~[?:?]
at org.elasticsearch.xpack.monitoring.exporter.ExportBulk$Compound.lambda$null$0(ExportBulk.java:175) ~[?:?]
at org.elasticsearch.action.ActionListener$1.onFailure(ActionListener.java:67) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.xpack.monitoring.exporter.local.LocalBulk.throwExportException(LocalBulk.java:132) ~[?:?]
at org.elasticsearch.xpack.monitoring.exporter.local.LocalBulk.lambda$doFlush$0(LocalBulk.java:112) ~[?:?]
at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:59) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.support.ContextPreservingActionListener.onResponse(ContextPreservingActionListener.java:43) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:88) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.support.TransportAction$1.onResponse(TransportAction.java:84) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.xpack.security.action.filter.SecurityActionFilter.lambda$apply$0(SecurityActionFilter.java:121) ~[?:?]
at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:59) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.support.ContextPreservingActionListener.onResponse(ContextPreservingActionListener.java:43) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.bulk.TransportBulkAction$BulkRequestModifier.lambda$wrapActionListenerIfNeeded$0(TransportBulkAction.java:560) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.ActionListener$1.onResponse(ActionListener.java:59) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.bulk.TransportBulkAction$BulkOperation$1.finishHim(TransportBulkAction.java:368) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.bulk.TransportBulkAction$BulkOperation$1.onFailure(TransportBulkAction.java:363) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.support.TransportAction$1.onFailure(TransportAction.java:94) ~[elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.ActionListener$1.onFailure(ActionListener.java:67) [elasticsearch-5.3.0.jar:5.3.0]
at org.elasticsearch.action.support.ContextPreservingActionListener.onFailure(ContextPreservingActionListener.java:50) [elasticsearch-5.3.0.jar:5.3.0]
but the exception time is not the time when my project connects to the elasticsearch.