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From "Nirmal Ranganathan (JIRA)" <>
Subject [jira] Updated: (CASSANDRA-1189) Refactor streaming
Date Tue, 03 Aug 2010 21:37:18 GMT


Nirmal Ranganathan updated CASSANDRA-1189:

    Attachment: 0002-Test-cases-for-Streaming-Messages.patch

Updated most of the suggested changes, I wasn't able to simplify StreamHeader, StreamContext
and PendingFile. 

I've run various test for Request & Transfer and seems good, however there was one case
when I got an error flushing the SSTable, looks like compaction happened before the file transfer
could be completed, on a request. I'm trying to reproduce that, in the meantime here's the
patch with updates. 

> Refactor streaming
> ------------------
>                 Key: CASSANDRA-1189
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.7 beta 1
>            Reporter: Gary Dusbabek
>            Assignee: Nirmal Ranganathan
>            Priority: Critical
>             Fix For: 0.7.0
>         Attachments: 0001-Refactored-streaming-to-make-it-more-streamlined.patch, 0002-Test-cases-for-Streaming-Messages.patch,
> The current architecture is buggy because it makes the assumption that only one stream
can be in process between two nodes at a given time, and stream send order never changes.
 Because of this, the ACK process gets fouled up when other services wish to stream files.
> The process is somewhat contorted too (request, initiate, initiate done, send).

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