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From Snehal <>
Subject UI component runs into "Too many connections files"
Date Tue, 04 Feb 2014 01:37:17 GMT

We have a 5 machine storm cluster running version 0.8.1. To monitor
the current state of the system we query the storm UI every 10 seconds
and scrape the cluster state. As a result of this change we are seeing
the following exception stack trace in the ui.logs. And also, we see
that a lot of socket connections are opened by the storm UI process
which are not closed. Is this a known issue? Too many open files
at org.apache.thrift7.transport.TSocket.initSocket(
at org.apache.thrift7.transport.TSocket.<init>(
at org.apache.thrift7.transport.TSocket.<init>(
at backtype.storm.thrift$nimbus_client_and_conn.invoke(thrift.clj:52)
at backtype.storm.ui.core$main_page.invoke(core.clj:153)
at backtype.storm.ui.core$fn__7296.invoke(core.clj:689)
at compojure.core$if_route$fn__5818.invoke(core.clj:39)
at compojure.core$if_method$fn__5811.invoke(core.clj:24)
at compojure.core$routing$fn__5833.invoke(core.clj:98)
at clojure.core$some.invoke(core.clj:2390)
at compojure.core$routing.doInvoke(core.clj:98)
at clojure.lang.RestFn.applyTo(
at clojure.core$apply.invoke(core.clj:603)


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