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https://issues.apache.org/jira/browse/SOLR-561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated SOLR-561:
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Attachment: SOLR-561-fixes.patch
Updated the fixes patch with more thread safety fixes.
Q: what is ReplicationHandler.getIndexVersion() supposed to return, and why?
It currently returns the version of the visible index (registered). Should it
be the most recent version of the index we have? Any reason it isn't using
ReplicationHandler.indexCommitPoint?
Also, I think we should all work at adding more comments to code as it is
written. Lack of comments made this patch harder to review.
> Solr replication by Solr (for windows also)
> -------------------------------------------
>
> Key: SOLR-561
> URL: https://issues.apache.org/jira/browse/SOLR-561
> Project: Solr
> Issue Type: New Feature
> Components: replication
> Affects Versions: 1.4
> Environment: All
> Reporter: Noble Paul
> Assignee: Shalin Shekhar Mangar
> Fix For: 1.4
>
> Attachments: deletion_policy.patch, SOLR-561-core.patch,
> SOLR-561-fixes.patch, SOLR-561-fixes.patch, SOLR-561-full.patch,
> SOLR-561-full.patch, SOLR-561-full.patch, SOLR-561-full.patch,
> SOLR-561.patch, SOLR-561.patch, SOLR-561.patch, SOLR-561.patch,
> SOLR-561.patch, SOLR-561.patch, SOLR-561.patch, SOLR-561.patch,
> SOLR-561.patch, SOLR-561.patch, SOLR-561.patch, SOLR-561.patch, SOLR-561.patch
>
>
> The current replication strategy in solr involves shell scripts . The
> following are the drawbacks with the approach
> * It does not work with windows
> * Replication works as a separate piece not integrated with solr.
> * Cannot control replication from solr admin/JMX
> * Each operation requires manual telnet to the host
> Doing the replication in java has the following advantages
> * Platform independence
> * Manual steps can be completely eliminated. Everything can be driven from
> solrconfig.xml .
> ** Adding the url of the master in the slaves should be good enough to enable
> replication. Other things like frequency of
> snapshoot/snappull can also be configured . All other information can be
> automatically obtained.
> * Start/stop can be triggered from solr/admin or JMX
> * Can get the status/progress while replication is going on. It can also
> abort an ongoing replication
> * No need to have a login into the machine
> * From a development perspective, we can unit test it
> This issue can track the implementation of solr replication in java
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