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From: Snehal <snehal.kumar@gmail.com>
Date: Mon, 3 Feb 2014 17:37:17 -0800
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 <CAOqemw=gv0NhnvUYnYgbNyBiwB47w5n6amSktsV25iPZBe4JWw@mail.gmail.com>
Subject: UI component runs into "Too many connections files"
To: user@storm.incubator.apache.org
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Hello,

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?

java.net.SocketException: Too many open files
at java.net.Socket.createImpl(Socket.java:397)
at java.net.Socket.getImpl(Socket.java:460)
at java.net.Socket.setSoLinger(Socket.java:900)
at org.apache.thrift7.transport.TSocket.initSocket(TSocket.java:116)
at org.apache.thrift7.transport.TSocket.<init>(TSocket.java:107)
at org.apache.thrift7.transport.TSocket.<init>(TSocket.java:92)
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$routing.doInvoke(core.clj:98)
at clojure.lang.RestFn.applyTo(RestFn.java:139)
at clojure.core$apply.invoke(core.clj:603)

Thanks,
Snehal