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From Héctor Izquierdo (JIRA) <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-2875) Increase index_interval and reopen sstables on low heap situations
Date Sat, 09 Jul 2011 13:27:16 GMT
Increase index_interval and reopen sstables on low heap situations
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                 Key: CASSANDRA-2875
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2875
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
    Affects Versions: 0.8.1
            Reporter: Héctor Izquierdo


One of the reasons that can cause an OOM is key indexes. Of course you can tune it, but that's
after your node has crashed. Events like repair can cause a much bigger memory pressure than
expected on normal operation. As part of the measures taken when heap is almost full it would
be good if key indexes could be shrank. I don't know how indexes are stored in memory but
I guess it would be possible to remove entries without rereading all sstables.

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