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Kafka, mail # user - too many open files - broker died


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too many open files - broker died
Kane Kane 2013-11-02, 05:28
I had only 1 topic with 45 partitions replicated across 3 brokers.
After several hours of uploading some data to kafka 1 broker died with
the following exception.
I guess i can fix it raising limit for open files, but I wonder how it
happened under described circumstances.
[2013-11-02 00:19:14,862] INFO Reconnect due to socket error: null
(kafka.consumer.SimpleConsumer)
[2013-11-02 00:19:14,706] INFO Reconnect due to socket error: null
(kafka.consumer.SimpleConsumer)

[2013-11-02 00:19:05,150] INFO Reconnect due to socket error: null
(kafka.consumer.SimpleConsumer)
[2013-11-02 00:09:08,569] FATAL [ReplicaFetcherThread-0-2], Disk error
while replicating data. (kafka.server.ReplicaFetcherThread)
kafka.common.KafkaStorageException: I/O exception in append to log 'perf1-4'
        at kafka.log.Log.append(Unknown Source)
        at kafka.server.ReplicaFetcherThread.processPartitionData(Unknown
Source)
        at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1$$anonfun$apply$mcV$sp$2.apply(Unknown
Source)
        at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1$$anonfun$apply$mcV$sp$2.apply(Unknown
Source)
        at scala.collection.immutable.HashMap$HashMap1.foreach(HashMap.scala:224)
        at scala.collection.immutable.HashMap$HashTrieMap.foreach(HashMap.scala:403)
        at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1.apply$mcV$sp(Unknown
Source)
        at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1.apply(Unknown
Source)
        at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$1.apply(Unknown
Source)
        at kafka.utils.Utils$.inLock(Unknown Source)
        at kafka.server.AbstractFetcherThread.processFetchRequest(Unknown
Source)
        at kafka.server.AbstractFetcherThread.doWork(Unknown Source)
        at kafka.utils.ShutdownableThread.run(Unknown Source)
Caused by: java.io.FileNotFoundException:
/disk1/kafka-logs/perf1-4/00000000000000010558.index (Too many open
files)
        at java.io.RandomAccessFile.open(Native Method)
        at java.io.RandomAccessFile.<init>(RandomAccessFile.java:241)
        at kafka.log.OffsetIndex$$anonfun$resize$1.apply(Unknown Source)
        at kafka.log.OffsetIndex$$anonfun$resize$1.apply(Unknown Source)
        at kafka.utils.Utils$.inLock(Unknown Source)
        at kafka.log.OffsetIndex.resize(Unknown Source)
        at kafka.log.OffsetIndex$$anonfun$trimToValidSize$1.apply$mcV$sp(Unknown
Source)
        at kafka.log.OffsetIndex$$anonfun$trimToValidSize$1.apply(Unknown
Source)
        at kafka.log.OffsetIndex$$anonfun$trimToValidSize$1.apply(Unknown
Source)
        at kafka.utils.Utils$.inLock(Unknown Source)
        at kafka.log.OffsetIndex.trimToValidSize(Unknown Source)
        at kafka.log.Log.roll(Unknown Source)
        at kafka.log.Log.maybeRoll(Unknown Source)