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https://issues.apache.org/jira/browse/SOLR-624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12612458#action_12612458
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Bill Au commented on SOLR-624:
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Yes, the '*' will cost problem if there are many snapshots. The snappuller
script has a shell command to determine the latest snapshot on the master. We
can use the same command in snapshooter.
> patch: Don't take snapshot if there are no differences
> ------------------------------------------------------
>
> Key: SOLR-624
> URL: https://issues.apache.org/jira/browse/SOLR-624
> Project: Solr
> Issue Type: Improvement
> Components: replication
> Affects Versions: 1.3
> Reporter: Richard "Trey" Hyde
> Fix For: 1.3
>
> Attachments: solr.check.patch
>
>
> This is similar in concept to a change I made several years ago in Solar.
> Cronned snapshooters can quickly generate a lot of snaps which will then be
> unnecessarily distributed to the slaves if there hasn't been any changes in
> that period.
> Adds a "check" argument to make sure there where changes to the index before
> taking the snap.
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