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From "Alan Liang (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-2288) AES Counter Repair Improvements
Date Tue, 08 Mar 2011 18:57:59 GMT
AES Counter Repair Improvements
-------------------------------

                 Key: CASSANDRA-2288
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2288
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
    Affects Versions: 0.8
            Reporter: Alan Liang
            Assignee: Alan Liang


A few issues found for AES Counter Repair in AESCommutativeRowIndexer#doIndexing:

- sync() being called for each row in sstable
- because the sstable is rebuilt inline (read and write on same file), this causes seeking
back and forth of write and read positions which causes many flushes
- BufferedRandomAccessFile#setLength does not work with buffers

Fixed:
- remove sync() until end
- use two BufferedRandomAccessFile's one for reader, one for writer
- cache length of reader file
- implement BufferedRandomAccessFile#setLength to work with buffer


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