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https://issues.apache.org/jira/browse/CASSANDRA-2819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis updated CASSANDRA-2819:
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Attachment: 2819-v5-rebased.txt
rebased to trunk. (IAsyncCancellableCallback is not included in the patch, so
I took my best guess at one.)
Comments:
- Writes still use the old rpc_timeout
- would prefer to rename old rpc_timeout to other_rpc_timout and comment what
it's used for (truncate, ?)
- looks like most remaining uses of old rpc_timeout should really be
max(different timeouts)
- currently, expiring map checks callbacks for expiration every 1/2 of default
timeout. This means short timeouts could go much longer than desired, before
being cancelled. I see two options: go back to direct await(timeout) in the
callback/response handlers, or update EM to scan much more frequently (which
could burn a lot of CPU for a system with many outstanding callbacks)
> Split rpc timeout for read and write ops
> ----------------------------------------
>
> Key: CASSANDRA-2819
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2819
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Stu Hood
> Assignee: Melvin Wang
> Fix For: 1.0.1
>
> Attachments: 2819-v4.txt, 2819-v5-rebased.txt, c2819.patch,
> rpc-jira.patch
>
>
> Given the vastly different latency characteristics of reads and writes, it
> makes sense for them to have independent rpc timeouts internally.
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