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https://issues.apache.org/jira/browse/JENA-895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14351677#comment-14351677
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ASF subversion and git services commented on JENA-895:
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Commit a8caf7f8f514ed60f7a8f252acb13b05d164cfc1 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=a8caf7f ]
JENA-895 : Do backup inside a read transaction.
> Fuseki2 backups
> ----------------
>
> Key: JENA-895
> URL: https://issues.apache.org/jira/browse/JENA-895
> Project: Apache Jena
> Issue Type: Bug
> Components: Fuseki
> Affects Versions: Fuseki 2.0.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
>
> Fuseki2 backups aren't properly wrapped in a transaction, causing the
> exception below for TDB (if the dataset has moved to transactional - there is
> a timing hole around backup+first use in a recently started server).
> {noformat}
> [2015-03-07 10:20:49] Backup INFO [11] >>>> Start backup /ds ->
> /home/afs/tmp/run/backups/ds_2015-03-07_10-20-49
> [2015-03-07 10:20:49] Backup INFO [11] **** Exception in backup
> com.hp.hpl.jena.tdb.transaction.TDBTransactionException: Not in a transaction
> at
> com.hp.hpl.jena.tdb.transaction.DatasetGraphTransaction.get(DatasetGraphTransaction.java:106)
> at
> com.hp.hpl.jena.tdb.transaction.DatasetGraphTransaction.get(DatasetGraphTransaction.java:40)
> at
> com.hp.hpl.jena.sparql.core.DatasetGraphTrackActive.getDefaultGraph(DatasetGraphTrackActive.java:91)
> at org.apache.jena.riot.system.RiotLib.prefixMap(RiotLib.java:257)
> at org.apache.jena.riot.RDFDataMgr.write$(RDFDataMgr.java:1331)
> at org.apache.jena.riot.RDFDataMgr.write(RDFDataMgr.java:1205)
> at org.apache.jena.riot.RDFDataMgr.write(RDFDataMgr.java:1195)
> at org.apache.jena.fuseki.mgt.Backup.backup(Backup.java:88)
> at
> org.apache.jena.fuseki.mgt.ActionBackup$BackupTask.run(ActionBackup.java:76)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> {noformat}
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