solrbackup s3- Incremental backup URI [s3:/solr-backup/] expected to hold a single directory. Number found: 0

[anilkhichar]

Solrbckup is successful but can't list/restore from the backed up data in S3.

• Solrbackup Setup kubectl edit solrcloud solr-prod

  backupRepositories:
  - name: "solr-backup-repo"
  s3:
    region: "us-west-2"
    bucket: "<solr-s3-bucket>"

• SolrBackup

  ---
  apiVersion: solr.apache.org/v1beta1
  kind: SolrBackup
  metadata:
  name: "solr-backup"
  spec:
  repositoryName: "solr-backup-repo"
  solrCloud: "solr-prod"
  collections:
    - mycollection

  $ kubectl get solrbackups
  NAME             CLOUD        STARTED   FINISHED   SUCCESSFUL   NEXTBACKUP   AGE
  solr-backup   solr-prod           17m           true              true                      17m

• LISTBACKUP (Failing here)

  curl -X POST http://localhost:8983/v2/collections/backups -H 'Content-Type: application/json' -d '
  {
    "list-backups" : {
      "name": "solr-backup",
      "repository": "solr-backup-repo",
      "location": "/"
    }
  }
  '

• Error:

  {
  "responseHeader":{
    "status":500,
    "QTime":1270},
  "error":{
    "msg":"Incremental backup URI [s3:/solr-backup/] expected to hold a single directory. Number found: 0",
    "trace":"java.lang.IllegalStateException: Incremental backup URI [s3:/solr-backup/] expected to hold a single directory. Number found: 0\n\tat org.apache.solr.core.backup.BackupFilePaths.buildExistingBackupLocationURI(BackupFilePaths.java:172)\n\tat org.apache.solr.handler.admin.CollectionsHandler$CollectionOperation.lambda$static$35(CollectionsHandler.java:1547)\n\tat org.apache.solr.handler.admin.CollectionsHandler$CollectionOperation.execute(CollectionsHandler.java:1775)\n\tat org.apache.solr.handler.admin.CollectionsHandler.invokeAction(CollectionsHandler.java:245)\n\tat org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:212)\n\tat org.apache.solr.handler.CollectionBackupsAPI.listBackups(CollectionBackupsAPI.java:55)\n\tat org.apache.solr.api.AnnotatedApi$Cmd.invoke(AnnotatedApi.java:310)\n\tat org.apache.solr.api.AnnotatedApi.call(AnnotatedApi.java:218)\n\tat org.apache.solr.api.V2HttpCall.handleAdmin(V2HttpCall.java:383)\n\tat org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:893)\n\tat org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:584)\n\tat org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)\n\tat org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)\n\tat java.base/java.lang.Thread.run(Unknown Source)\n",
    "code":500}}

[anilkhichar]

Finally, I resolved it by adding collection name as suffix. Same is working with RESTORE as well Now the "name" => SolrBackup.metadata.name + '-' + SolrBackup.spec.collection

curl -X POST http://localhost:8983/v2/collections/backups -H 'Content-Type: application/json' -d '
  {
    "list-backups" : {
      "name": "solr-backup-mycollection",
      "repository": "solr-backup-repo",
      "location": "/"
    }
  }
'