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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: deletion_policy.patch
Attaching deletion_policy.patch
This exports a SolrDeletionPolicy via UpdateHandler.getDeletionPolicy()
It can be used to get the latest SolrIndexCommit, which lists the files that
are part of the commit, and can be used to reserve/lease the commit point for a
certain amount of time. This could be used to enable replication directly out
of the index directory and avoid copying on systems like Windows.
Each SolrIndexCommit has an id, which can be used by a client as a correlation
id. Since a single file can be part of multiple commit points, a replication
client should specify what commit point it is copying. The server can then
look up that commit point and extend the lease.
> 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
>
>
> 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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