[
https://issues.apache.org/jira/browse/CASSANDRA-4297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yuki Morishita updated CASSANDRA-4297:
--------------------------------------
Attachment: 4297.txt
Attaching patch for review(also updated
https://github.com/yukim/cassandra/tree/4297).
* removed unnecessary changes from trunk
* corrected progress reporting on dest node
* added some comments
> Use java NIO as much as possible when streaming compressed SSTables
> -------------------------------------------------------------------
>
> Key: CASSANDRA-4297
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4297
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Yuki Morishita
> Assignee: Yuki Morishita
> Priority: Minor
> Labels: streaming
> Fix For: 1.2
>
> Attachments: 4297.txt
>
>
> Back in 0.8, streaming uses java NIO (FileChannel#transferTo/transferFrom) to
> perform zero copy file transfer between nodes. Since 1.0, in order to add new
> features like sstable compression and internode encryption we had to switch
> to java IO Input/OutputStreams. What we currently do to transfer compressed
> SSTable is, in source node, 1) decompress chunk in SSTable, 2) compress using
> LZF for network, and in destination node, 3) decompress using LZF as reading
> from socket, 4) compress for SSTable on disk.
> Now, 1.1 comes out with SSTable compression turned on by default. It is
> reasonable to transfer compressed file as is using NIO instead of
> decompress/compress in source node.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
