Pedro Gontijo created KAFKA-7757:
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Summary: Too many open files after java.io.IOException: Connection
to n was disconnected before the response was read
Key: KAFKA-7757
URL: https://issues.apache.org/jira/browse/KAFKA-7757
Project: Kafka
Issue Type: Bug
Components: core
Affects Versions: 2.1.0
Reporter: Pedro Gontijo
We upgraded from 0.10.2.2 to 2.1.0 (a cluster with 3 brokers)
After a while (hours) 2 brokers start to throw:
{code:java}
java.io.IOException: Connection to NN was disconnected before the response was
read
at
org.apache.kafka.clients.NetworkClientUtils.sendAndReceive(NetworkClientUtils.java:97)
at
kafka.server.ReplicaFetcherBlockingSend.sendRequest(ReplicaFetcherBlockingSend.scala:97)
at
kafka.server.ReplicaFetcherThread.fetchFromLeader(ReplicaFetcherThread.scala:190)
at
kafka.server.AbstractFetcherThread.kafka$server$AbstractFetcherThread$$processFetchRequest(AbstractFetcherThread.scala:241)
at
kafka.server.AbstractFetcherThread$$anonfun$maybeFetch$1.apply(AbstractFetcherThread.scala:130)
at
kafka.server.AbstractFetcherThread$$anonfun$maybeFetch$1.apply(AbstractFetcherThread.scala:129)
at scala.Option.foreach(Option.scala:257)
at
kafka.server.AbstractFetcherThread.maybeFetch(AbstractFetcherThread.scala:129)
at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:111)
at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:82)
{code}
The problem has happened with all brokers.
File descriptors start to pile up and if I do not restart it throws "Too many
open files" and crashes.
{code:java}
ERROR Error while accepting connection (kafka.network.Acceptor)
java.io.IOException: Too many open files in system
at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:422)
at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:250)
at kafka.network.Acceptor.accept(SocketServer.scala:460)
at kafka.network.Acceptor.run(SocketServer.scala:403)
at java.lang.Thread.run(Thread.java:748)
{code}
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