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Posted to dev@cassandra.apache.org by Git at Apache <gi...@git.apache.org> on 2012/05/03 08:16:51 UTC

cassandra pull request: Provide initial size for ColumnFamily object.

GitHub user akolyadenko opened the pull request at
https://github.com/apache/cassandra/pull/10

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Provide initial size for ColumnFamily object.

It's fix for https://issues.apache.org/jira/browse/CASSANDRA-3741.
The problem there is that when ColumnFamily got all columns deleted, the size() method returns 0 despite the fact that actual object size is at least 40 bytes. 
It affects calculations of whole Memtable size. In my case I deleted millions of columns and Cassandra didn't calculate Memtable size correctly, and didn't flush it. It caused OOM crash of DB.
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You can merge this pull request into a Git repository by running
$ git pull https://github.com/akolyadenko/cassandra trunk

Alternatively you can review and apply these changes as the patch at
https://github.com/apache/cassandra/pull/10.patch