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From "Noble Paul (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-561) Solr replication by Solr (for windows also)
Date Fri, 24 Oct 2008 06:33:44 GMT

    [ https://issues.apache.org/jira/browse/SOLR-561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12642389#action_12642389
] 

Noble Paul commented on SOLR-561:
---------------------------------

The SnapShooter is not written right (thread safety). soon after you commit the patch , I
can give a patch . After i fix it I can update the wiki w/ proper documentation. 

Should we try OS specific copy? 
Hardlinks can be used in *nix and Windows can also do hardlinks if fsutils is present. If
not ,we can do a proper copy

> 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-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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