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https://issues.apache.org/jira/browse/SOLR-561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12614228#action_12614228
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Yonik Seeley commented on SOLR-561:
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bq. Because the file names are unique it did not matter if I used the index
version (or does it).
Yes, file names are unique since Lucene doesn't change existing files once they
are written. But, if I completely delete an index and start again, the same
file name would be reused with different contents (and a different timestamp).
But that's not the point I was trying to make...
If someone is replicating an older IndexCommit, then we want to extend the
lease on it. In order to do that, we need to know what IndexCommit the client
is replicating. The file name is not enough as a single file is normally part
of more than one IndexCommit.
> 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: 1.3
> Environment: All
> Reporter: Noble Paul
> Attachments: deletion_policy.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
> This issue can track the implementation of solr replication in java
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