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The following page has been changed by JonathanEllis: http://wiki.apache.org/cassandra/FAQ ------------------------------------------------------------------------------ = Frequently asked questions = - Why can't I make Cassandra listen on 0.0.0.0 (all my addresses)? + == Why can't I make Cassandra listen on 0.0.0.0 (all my addresses)? == Cassandra is a gossip-based distributed system. ListenAddress is also "contact me here address," i.e., the address it tells other nodes to reach it at. Telling other nodes "contact me on any of my addresses" is a bad idea; if different nodes in the cluster pick different addresses for you, Bad Things happen. @@ -10, +10 @@ See https://issues.apache.org/jira/browse/CASSANDRA-256 and https://issues.apache.org/jira/browse/CASSANDRA-43 for more gory details. + == Why does Cassandra slow down after doing a lot of inserts? == + + This is a symptom of having Cassandra's memtable thresholds too high, resulting in a storm of GC operations as the JVM frantically tries to free enough heap to continue to operate. + + You can increase the amount of memory the JVM uses, or decrease the insert threshold before Cassandra flushes its memtables. See MemtableThresholds for details. +
