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https://issues.apache.org/jira/browse/CASSANDRA-2284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-2284:
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Attachment: 0001-Make-memtable-and-sstable-switches-atomic-v3.patch
Memtable flush is not using CFStore.addSSTable anymore and thus was not going
through the incremental backup code.
Attached v3 fixes that (that involved moving the incremental backup code into
DataTracker).
> Make changes to the set of memtables and sstables of a cfstore atomic
> ----------------------------------------------------------------------
>
> Key: CASSANDRA-2284
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2284
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Sylvain Lebresne
> Priority: Minor
> Fix For: 0.8
>
> Attachments: 0001-Make-memtable-and-sstable-switches-atomic-v2.patch,
> 0001-Make-memtable-and-sstable-switches-atomic-v3.patch,
> 0001-Make-memtable-and-sstable-switches-atomic.patch, 2284-v2-rebased.txt
>
> Original Estimate: 8h
> Remaining Estimate: 8h
>
> Some switches happen in the set of memtables and sstables of a cfstore:
> * when we switch the memtable, the current memtable is replaced by a new
> one and add to the memtablesPendingFlush
> * when a memtable is fully flushed, it is removed from
> memtablesPendingFlush and the newly created sstable is added to the set of
> active sstables.
> * after compaction, compacted memtables are removed from the active
> sstables and the compacted sstable is added instead
> Only the last of these operations is atomic. This ticket proposes to makes
> all of them atomic, using the idea of the View idea hinted by Stu in the
> comments of CASSANDRA-1954.
> The main reason for this is to fix CASSANDRA-2105. But I think that another
> benefit of this is to make reasoning about those operations easier.
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