Wouldn’t the JVM property “networkaddress.cache.negative.ttl” do this already ?
http://docs.oracle.com/javase/7/docs/technotes/guides/net/properties.html On 1 Apr 2014, at 7:07 am, Bobby Evans <[email protected]> wrote: > It should be possible to store/cache it. Please file a JIRA on it. No > guarantee on when it would get fixed, unless you want to submit a patch > with it too. > > ‹Bobby > > On 3/27/14, 9:17 AM, "Julien Nioche" <[email protected]> wrote: > >> Hi, >> >> I am getting loads of exceptions such as : >> >> java.lang.RuntimeException: java.net.UnknownHostException: $MYSERVER: >> $MYSERVER >> at >> backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.ja >> va:107) >> at >> backtype.storm.utils.DisruptorQueue.consumeBatch(DisruptorQueue.java:66) >> at backtype.storm.disruptor$consume_batch.invoke(disruptor.clj:74) >> at >> backtype.storm.daemon.executor$eval3848$fn__3849$fn__3864$fn__3893.invoke( >> executor.clj:539) >> at backtype.storm.util$async_loop$fn__384.invoke(util.clj:433) >> at clojure.lang.AFn.run(AFn.java:24) >> at java.lang.Thread.run(Thread.java:744) >> Caused by: java.net.UnknownHostException: $MYSERVER: $MYSERVER >> >> at java.net.InetAddress.getLocalHost(InetAddress.java:1473) >> at backtype.storm.daemon.executor$metrics_tick.invoke(executor.clj:279) >> at >> backtype.storm.daemon.executor$eval3848$fn__3849$tuple_action_fn__3855.inv >> oke(executor.clj:435) >> at >> backtype.storm.daemon.executor$mk_task_receiver$fn__3839.invoke(executor.c >> lj:401) >> at >> backtype.storm.disruptor$clojure_handler$reify__1560.onEvent(disruptor.clj >> :58) >> at >> backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.ja >> va:104) >> ... 6 more >> Caused by: java.net.UnknownHostException: ns316721.ip-37-187-131.eu >> at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) >> at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901) >> at >> java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293) >> at java.net.InetAddress.getLocalHost(InetAddress.java:1469) >> ... 11 more >> >> where $MYSERVER is the hostname of the machine where Storm is running. >> These exceptions happen at random and could be due to an issue with Bind, >> which for some reason fails to return the information about the localhost. >> >> >> From what I understand from the code in [1], this happens when processing >> the metrics-ticks. Would there be a way to store the information about the >> localhost once and for all instead of asking for it every time and if so, >> how would you do that in Clojure? >> >> Thanks >> >> Julien >> >> >> [1] >> https://github.com/apache/incubator-storm/blob/master/storm-core/src/clj/b >> acktype/storm/daemon/executor.clj#L278 >> >> >> >> >> -- >> >> Open Source Solutions for Text Engineering >> >> http://digitalpebble.blogspot.com/ >> http://www.digitalpebble.com >> http://twitter.com/digitalpebble >
