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https://issues.apache.org/jira/browse/CASSANDRA-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stu Hood updated CASSANDRA-1117:
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Attachment: 0004-Rename-SSTableReaderTest-to-SegmentedFileTest.patch
0005-Remove-filename-munging.patch
Patches to add SegmentedFile, remove the embedded mmap handling in
RowIndexedReader, and perform other minor cleanups.
This set doesn't go so far as to use SegmentedFile iteration in SSTableScanner
(since the nested iterators there make it almost impossible to close underlying
segments), but 998 will.
> Clean up MMAP support
> ---------------------
>
> Key: CASSANDRA-1117
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1117
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Stu Hood
> Assignee: Jonathan Ellis
> Fix For: 0.7
>
> Attachments: 0001-Use-factory-functions-for-RowIndexedReader.patch,
> 0002-Add-SegmentedFile-to-abstract-opening-FileDataInputs.patch,
> 0003-Replace-mmap-file-abstraction-with-SegmentedFile.patch,
> 0004-Rename-SSTableReaderTest-to-SegmentedFileTest.patch,
> 0005-Remove-filename-munging.patch
>
>
> Awareness of MMAP is currently embedded into the SSTableReader implementation
> and IndexSummary. A good number of bugs experienced recently have been due to
> this lack of separation, so it is ripe for abstraction. Additionally, the
> current implementation does not provide a good method for iterating over the
> segments of a file, which is useful for range queries, and lays more stable
> groundwork for #998.
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