[GitHub] duhengforever commented on issue #486: create mapped file raise io exception, but the file is indeed created succ on the disk.

[GitBox <gi...@apache.org>]

duhengforever commented on issue #486: create mapped file raise io exception, but the file is indeed created succ on the disk.
URL: https://github.com/apache/rocketmq/issues/486#issuecomment-428075561
 
 
   @reachfish It seems an OutOfMemoryError occurred when mapping a file into memory，and it seems you are running a benchmark case in your environment, so please run rocketmq in a 64-bit server and check the mapped file whether reached the limit of your server setting, such as file-max or max_map_count(cat /proc/sys/vm/max_map_count), and check your runbroker.sh JVM config.
   and if your have no idea about this, you can search these words:  "FileChannelImpl 
    java.lang.OutOfMemoryError: Map failed  " in google.
   
   

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