cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jonathan Ellis (JIRA)" <>
Subject [jira] Updated: (CASSANDRA-1379) Uncached row reads may block cached reads
Date Wed, 11 Aug 2010 20:11:32 GMT


Jonathan Ellis updated CASSANDRA-1379:

           Issue Type: New Feature  (was: Bug)
        Fix Version/s: 0.7.1
    Affects Version/s:     (was: 0.6.4)
             Priority: Minor  (was: Major)

Are you suggesting splitting the read stage into check-cache and fetch-data stages?

> Uncached row reads may block cached reads
> -----------------------------------------
>                 Key: CASSANDRA-1379
>                 URL:
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Core
>            Reporter: David King
>            Priority: Minor
>             Fix For: 0.7.1
> The cap on the number of concurrent reads appears to cap the *total* number of concurrent
reads instead of just capping the reads that are bound for disk. That is, given N concurrent
readers if all of them are busy waiting on disk, even reads that can be served from the row
cache will block waiting for them.

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message