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From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Update of "FAQ" by jab_doa
Date Mon, 11 Apr 2011 15:03:38 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 jab_doa.
http://wiki.apache.org/cassandra/FAQ?action=diff&rev1=113&rev2=114

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  <<Anchor(bigcommitlog)>>
  
  == Commit Log gets very big. Cassandra does not delete "old" commit logs. Why? ==
- You probably got a few Column Families with very low throughput than others. They will not
get flushed very frequently and the commit log doesnt get deleted. There is one option to
work around the problem: You can set the per-cf-option memtable_flush_after_min. This will
flush your CF at least every x minutes. 60 minutes i a good value to start. To set this via
cassandra-cli use:
+ You probably got a few Column Families with very low throughput. They will not get flushed
very frequently and the commit log doesnt get deleted. There is one option to work around
the problem: You can set the per-cf-option memtable_flush_after_min. This will flush your
CF at least every x minutes. 60 minutes i a good value to start. To set this via cassandra-cli
use:
  
  update column family XXX with memtable_flush_after=60;
  

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