Channel not available when executing concurrent query

HI
When executing concurrent query and multi day query - most of the queries failed and throwing exception like channel not found.

What is the reason for this and how to fine tuned the nodes.

Thanks

Prabakaran Krishnan

Hi

I am getting this error using v2 - groupby queries . Druid version - 0.10.1. When executing 2 concurrent queries - one queries is susccess and another one is failing. If I execute more than one query, Only one query is success and others are throwing below error.

2019-05-01 01:15:10 [qtp1482714257-135[groupBy_[staypoint_v1.0]_daas-a8190438da59e027e381d787a0937715-1146-gDEEY-1556672851194]] ERROR QueryResource:130 - Exception handling request: {class=io.druid.server.QueryResource, exceptionType=class io.druid.java.util.common.RE, exceptionMessage=Failure getting results for query[daas-a8190438da59e027e381d787a0937715-1146-gDEEY-1556672851194] url[http://ip-10-2-1-87.ap-southeast-2.compute.internal:8083/druid/v2/] because of [org.jboss.netty.channel.ChannelException: Channel disconnected], exception=io.druid.java.util.common.RE: Failure getting results for query[daas-a8190438da59e027e381d787a0937715-1146-gDEEY-1556672851194] url[http://ip-10-2-1-87.ap-southeast-2.compute.internal:8083/druid/v2/] because of [org.jboss.netty.channel.ChannelException: Channel disconnected],

Thanks

Prabakaran Krishnan