[
https://issues.apache.org/jira/browse/CASSANDRA-2731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048626#comment-13048626
]
Jonathan Ellis commented on CASSANDRA-2731:
-------------------------------------------
By "What do we do for Windows" I was referring to the native parts of this, not
the radix tree.
> Impelement in-house file caching.
> ---------------------------------
>
> Key: CASSANDRA-2731
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2731
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Affects Versions: 1.0
> Reporter: Pavel Yaskevich
> Assignee: Pavel Yaskevich
>
> Implement FileCache, CachedRandomAccessFile (to replace
> BufferedRandomAccessFile) and RadixTree (to play role of the backend cache
> storage) classes.
> FileCache class with be responsible for storing/retrieving data from Radix
> Tree and also flushing of the dirty pages to the disk, page management such
> as adding new pages, utilizing old/unused pages.
> CRAF Linux only features (via JNI):
> 1). O_DIRECT for both read/write operations.
> 2). AIO's lio_listio write operation batching.
> Provide possibility to migrate hot data directly from Memtable to CRAF cache
> to keep live-reads data always hot in memory. To minimise compaction effects
> CRAF should provide a way to by-pass a caching data if it does not already
> exists.
> Provide a way to make pointers in the cache which will be useful to minimize
> impact on performance when a single column is distributed among multiple
> SSTable files (except counter columns).
> Use jemalloc (http://www.canonware.com/jemalloc/) for cache memory management.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
