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Posted to commits@cassandra.apache.org by "Jonathan Ellis (JIRA)" <ji...@apache.org> on 2010/12/01 23:58:16 UTC
[jira] Created: (CASSANDRA-1803) fail fast in strongRead when
insufficient replicas are available to satisfy ConsistencyLevel
fail fast in strongRead when insufficient replicas are available to satisfy ConsistencyLevel
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Key: CASSANDRA-1803
URL: https://issues.apache.org/jira/browse/CASSANDRA-1803
Project: Cassandra
Issue Type: Improvement
Components: Core
Reporter: Jonathan Ellis
Assignee: Jonathan Ellis
Priority: Minor
Fix For: 0.7.0
Currently strongRead (the patch for ConsistencyLevel > 1) always sends out requests to all live replicas, even if there are not enough to satisfy the ConsistencyLevel. This is a violation of our contract w/ the client to throw UnavailableException when we know ahead of time that the request cannot be fulfilled.
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[jira] Updated: (CASSANDRA-1803) fail fast in strongRead when
insufficient replicas are available to satisfy ConsistencyLevel
Posted by "T Jake Luciani (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
T Jake Luciani updated CASSANDRA-1803:
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Attachment: 1803_v2.txt
Renamed QRH.available() to .assureSufficientLiveNodes() throws UnavailableException to match corresponding WriteResponseHandler call...
Added Unit tests to verify consistency check for QRH and WRH.
+1
> fail fast in strongRead when insufficient replicas are available to satisfy ConsistencyLevel
> --------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-1803
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1803
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.7.0
>
> Attachments: 1803.txt, 1803_v2.txt
>
>
> Currently strongRead (the patch for ConsistencyLevel > 1) always sends out requests to all live replicas, even if there are not enough to satisfy the ConsistencyLevel. This is a violation of our contract w/ the client to throw UnavailableException when we know ahead of time that the request cannot be fulfilled.
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[jira] Commented: (CASSANDRA-1803) fail fast in strongRead when
insufficient replicas are available to satisfy ConsistencyLevel
Posted by "Hudson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12970391#action_12970391 ]
Hudson commented on CASSANDRA-1803:
-----------------------------------
Integrated in Cassandra-0.7 #70 (See [https://hudson.apache.org/hudson/job/Cassandra-0.7/70/])
> fail fast in strongRead when insufficient replicas are available to satisfy ConsistencyLevel
> --------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-1803
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1803
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.7.0 rc 2
>
> Attachments: 1803.txt, 1803_v2.txt
>
>
> Currently strongRead (the patch for ConsistencyLevel > 1) always sends out requests to all live replicas, even if there are not enough to satisfy the ConsistencyLevel. This is a violation of our contract w/ the client to throw UnavailableException when we know ahead of time that the request cannot be fulfilled.
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[jira] Updated: (CASSANDRA-1803) fail fast in strongRead when
insufficient replicas are available to satisfy ConsistencyLevel
Posted by "Jonathan Ellis (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-1803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-1803:
--------------------------------------
Attachment: 1803.txt
Adds QRH.available() method to allow this.
Also cleans up response/result duplication between QRH/IResponseResolver classes.
> fail fast in strongRead when insufficient replicas are available to satisfy ConsistencyLevel
> --------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-1803
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1803
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.7.0
>
> Attachments: 1803.txt
>
>
> Currently strongRead (the patch for ConsistencyLevel > 1) always sends out requests to all live replicas, even if there are not enough to satisfy the ConsistencyLevel. This is a violation of our contract w/ the client to throw UnavailableException when we know ahead of time that the request cannot be fulfilled.
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