kafka服务无法启动的原因

kafka集群中一台服务器kill掉后再启动时报错。

java.io.IOException: Map failed

Caused by: java.lang.OutOfMemoryError: Map failed

[2017-06-01 23:13:20,254] ERROR There was an error in one of the threads during logs loading: java.io.IOException: Map failed (kafka.log.LogManager)
[2017-06-01 23:13:20,264] FATAL [Kafka Server 0], Fatal error during KafkaServer startup. Prepare to shutdown (kafka.server.KafkaServer)
java.io.IOException: Map failed
    at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:940)
    at kafka.log.AbstractIndex.$anonfun$resize$1(AbstractIndex.scala:111)
    at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:213)
    at kafka.log.AbstractIndex.resize(AbstractIndex.scala:101)
    at kafka.log.Log.loadSegments(Log.scala:281)
    at kafka.log.Log.<init>(Log.scala:116)
    at kafka.log.LogManager.$anonfun$loadLogs$10(LogManager.scala:157)
    at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:57)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.OutOfMemoryError: Map failed
    at sun.nio.ch.FileChannelImpl.map0(Native Method)
    at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:937)
    ... 12 more
[2017-06-01 23:13:20,289] INFO [Kafka Server 0], shutting down (kafka.server.KafkaServer)
[2017-06-01 23:13:20,478] INFO [Kafka Server 0], shut down completed (kafka.server.KafkaServer)
[2017-06-01 23:13:20,480] FATAL Fatal error during KafkaServerStartable startup. Prepare to shutdown (kafka.server.KafkaServerStartable)
java.io.IOException: Map failed
    at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:940)
    at kafka.log.AbstractIndex.$anonfun$resize$1(AbstractIndex.scala:111)
    at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:213)
    at kafka.log.AbstractIndex.resize(AbstractIndex.scala:101)
    at kafka.log.Log.loadSegments(Log.scala:281)
    at kafka.log.Log.<init>(Log.scala:116)
    at kafka.log.LogManager.$anonfun$loadLogs$10(LogManager.scala:157)
    at kafka.utils.CoreUtils$$anon$1.run(CoreUtils.scala:57)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.OutOfMemoryError: Map failed
    at sun.nio.ch.FileChannelImpl.map0(Native Method)
    at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:937)
    ... 12 more
[2017-06-01 23:13:20,494] INFO [Kafka Server 0], shutting down (kafka.server.KafkaServer)

通过https://stackoverflow.com/questions/43042144/kafka-server-failed-to-start-java-io-ioexception-map-failed得知需要64位JVM。

现环境是centos6.8 32位+jvm 32位，升级为centos6.8 64位+jvm 64位后成功解决。