Broken pipe exceptions from Redis client Jedis - scala

Question

We have a redis client calls from a play framework Application. This Redis calls are being made from an Actor using Akka Schedular. This scheduler runs every 60 secs which makes redis calls along with other JDBC calls. After scheduler has run for a few mins we start seeing following into the log files and app stops responding to any Redis client calls. This is my first encounter with Redis so any pointers, help is appreciated.
redis.host = localhost
redis.port = 6379
redis.timeout = 10
redis.pool.maxActive =110
redis.pool.maxIdle = 50
redis.pool.maxWait = 3000
redis.pool.testOnBorrow = true
redis.pool.testOnReturn = true
redis.pool.testWhileIdle = true
redis.pool.timeBetweenEvictionRunsMillis = 60000
redis.pool.numTestsPerEvictionRun = 10
Exception details:
redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketException: Broken pipe
at redis.clients.jedis.Connection.flush(Connection.java:69) ~[redis.clients.jedis-2.3.0.jar:na]
at redis.clients.jedis.JedisPubSub.subscribe(JedisPubSub.java:58) ~[redis.clients.jedis-2.3.0.jar:na]
............
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:498) [com.typesafe.akka.akka-actor_2.10-2.2.0.jar:2.2.0]
at akka.actor.ActorCell.invoke(ActorCell.scala:456) [com.typesafe.akka.akka-actor_2.10-2.2.0.jar:2.2.0]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:237) [com.typesafe.akka.akka-actor_2.10-2.2.0.jar:2.2.0]
at akka.dispatch.Mailbox.run(Mailbox.scala:219) [com.typesafe.akka.akka-actor_2.10-2.2.0.jar:2.2.0]
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:386) [com.typesafe.akka.akka-actor_2.10-2.2.0.jar:2.2.0]
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [org.scala-lang.scala-library-2.10.3.jar:na]
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [org.scala-lang.scala-library-2.10.3.jar:na]
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [org.scala-lang.scala-library-2.10.3.jar:na]
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [org.scala-lang.scala-library-2.10.3.jar:na]
Caused by: java.net.SocketException: Broken pipe
at java.net.SocketOutputStream.socketWrite0(Native Method) ~[na:1.7.0_51]
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113) ~[na:1.7.0_51]
at java.net.SocketOutputStream.write(SocketOutputStream.java:159) ~[na:1.7.0_51]
at redis.clients.util.RedisOutputStream.flushBuffer(RedisOutputStream.java:31) ~[redis.clients.jedis-2.3.0.jar:na]
at redis.clients.util.RedisOutputStream.flush(RedisOutputStream.java:223) ~[redis.clients.jedis-2.3.0.jar:na]
at redis.clients.jedis.Connection.flush(Connection.java:67) ~[redis.clients.jedis-2.3.0.jar:na]
... 15 common frames omitted

Answer 1

The problem is with the time out and that the client you used to do the subscribe timed out / got DC ed.

Answer 2

I have recently encountered a similar problem with Redis and the problem was, I was not returning the Jedis resource after subscribing so the connections were leaking, and the app was not responding after couple of connections. So don't forget to return jedis resource after whatever you do it:
Jedis j = play.Play.application().plugin(RedisPlugin.class).jedisPool().getResource();
j.subscribe(listener, redisChannel);
play.Play.application().plugin(RedisPlugin.class).jedisPool().returnResource(j);