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https://issues.apache.org/jira/browse/CASSANDRA-2715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13048593#comment-13048593
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Hudson commented on CASSANDRA-2715:
-----------------------------------
Integrated in Cassandra-0.8 #166 (See
[https://builds.apache.org/job/Cassandra-0.8/166/])
remove active-pull schemarequests
patch by jbellis; reviewed by jbellis for CASSANDRA-2715
jbellis :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1135116
Files :
* /cassandra/branches/cassandra-0.8/CHANGES.txt
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/DropColumnFamily.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/RenameColumnFamily.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/DataTracker.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/DropKeyspace.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/Migration.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/RenameKeyspace.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/UpdateColumnFamily.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/service/MigrationManager.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/AddColumnFamily.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/DefinitionsUpdateVerbHandler.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/DefinitionsAnnounceVerbHandler.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/migration/AddKeyspace.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/db/DefinitionsUpdateResponseVerbHandler.java
*
/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/service/StorageService.java
> simplify schema reconciliation
> ------------------------------
>
> Key: CASSANDRA-2715
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2715
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.7.0
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 0.8.1
>
> Attachments: 2715.txt, 2715.txt
>
>
> Currently, schema migrations can be replayed from one node to another in any
> of three ways:
> - a node processes a migration from a client, and pushes it to all live nodes
> (Migration.announce on the source)
> - a node sees that another node's schema version is older than his
> (MigrationManager.onChange on the source)
> - a node sees that his own schema version is older than another's and makes
> an explicit request (MigrationManager.onChange on the target,
> DefinitionsAnnounceVerbHandler on the source)
> The last of these is an optimization that isn't worth the extra complexity --
> under normal conditions, the initial announce from the coordinator updates
> everyone, and in recovery situations the latency gain of #3 over #2 is only a
> few seconds.
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