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https://issues.apache.org/jira/browse/SOLR-15371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17363157#comment-17363157
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Jason Gerlowski commented on SOLR-15371:
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Hey Roy, do you have Solr logs handy that you could share to help others debug
this? Or any suggestions that might make it more reproducible for others?
We try to keep Jira for actionable, confirmed bugs or requested improvements.
If there was more detail to make this actionable it would fit well here, but
as-is seems like it might be a better fit for a discussion on the
[[email protected]|mailto:[email protected]] mailing list (which has
the side benefit of attracting more readers than JIRA).
> Backups randomly fail sometimes
> -------------------------------
>
> Key: SOLR-15371
> URL: https://issues.apache.org/jira/browse/SOLR-15371
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Backup/Restore
> Affects Versions: 8.5.2, 8.8.2
> Reporter: Roy Perkins
> Priority: Major
>
> Hi, we have an issue where sometimes one shard fails to backup due to what
> might be a race condition in creating the folder/starting the backup. When
> this happens, we have to restart the first server in a shard to get the
> backup to succeed again. The cluster backs up to a shared NFS mount. 4/5
> times the backup goes fine without issues (there is even another collection
> that the backup will run for later in the morning that will succeed fine even
> though it's all the same servers) Below is the error I get.
> {code:java}
> "Response":"Failed to backup core=slprod_shard4_replica_n6 because
> org.apache.solr.common.SolrException: Directory to contain snapshots doesn't
> exist: file:///mnt/solr_backups/slprod/slprod-04-25-2021. Note that
> Backup/Restore of a SolrCloud collection requires a shared file system
> mounted at the same path on all nodes!"},
> {code}
> And below is the line I use to backup with (obviously with bash variables set
> earlier in the script)
> {code:java}
> curl -s
> "http://localhost:8983/solr/admin/collections?action=BACKUP&name=${COLLECTION}-${DATE}&collection=${COLLECTION}&location=${BACKUP_PATH}&async=1000";
> {code}
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