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From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Update of "FAQ" by BrandonWilliams
Date Sun, 05 Feb 2012 18:43:39 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for change notification.

The "FAQ" page has been changed by BrandonWilliams:
http://wiki.apache.org/cassandra/FAQ?action=diff&rev1=143&rev2=144

  
  <<Anchor(memlock)>>
  == Cassandra dies with "java.lang.OutOfMemoryError: Map failed" ==
- '''IF''' Cassandra is dying specifically with the "Map failed" message it means the OS is
denying java the ability to lock more memory.  In linux, this typically means memlock is limited.
 Check /proc/<pid of cassandra>/limits to verify this and raise it (eg, via ulimit in
bash.)  Note that the debian and redhat packages handle this for you automatically.
+ '''IF''' Cassandra is dying specifically with the "Map failed" message it means the OS is
denying java the ability to lock more memory.  In linux, this typically means memlock is limited.
 Check /proc/<pid of cassandra>/limits to verify this and raise it (eg, via ulimit in
bash.)  You may also need to increase  vm.max_map_count.  Note that the debian and redhat
packages handle this for you automatically.
  

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