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https://issues.apache.org/jira/browse/SOLR-17059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17810055#comment-17810055
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Jason Gerlowski commented on SOLR-17059:
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Hi Anusha - starting in Solr 8.9, the default backup format has been changed to
be "incremental". Solr no longer creates a file called "backup.properties",
but a series of similarly named files with an additional numeric component:
"backup_0.properties", backup_1.properties, etc. Maybe that's what you meant
in your issue title, but I wanted to clarify just in case.
Judging from the very bottom of this stack trace, what I'd guess is happening
is that this error occurs when Solr attempts to cleanup a partially completed
backup after some earlier error has occurred. Solr should handle this more
gracefully if the files it's deleting don't exist - there's definitely some
improvement we can make there. But from what I can tell, the stack trace you
posted is a downstream effect and not the real cause. Are there any other
stacktraces or messages of note in the logs?
(Or maybe, in the intervening months - were you able to solve or workaround
this problem? If so, I'd love to hear the root cause!)
> When ran Backup API, it doesn't create backup.properties file in backup path
> ----------------------------------------------------------------------------
>
> Key: SOLR-17059
> URL: https://issues.apache.org/jira/browse/SOLR-17059
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Affects Versions: 9.0
> Environment: Production
> Reporter: Anusha R
> Priority: Blocker
>
>
> We are trying to backup indexes in Prod. It created snapshots in mentioned
> location. But it didn't create backup.properties, zk_backup files in that
> location.
> So when we use restore api, we are not able to restore, It failed with
> exception that "No backup.properties file"
> We need help to know why backup.properties file is not created. Below is the
> api we are using for backup.
> [http://username:pass|http://solr/]word@hostname:port/solr/admin/collections?action=BACKUP&name=$newBackupName&collection=$myCollectionName&location=/opt/epricer-solr-backup/DR
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