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https://issues.apache.org/jira/browse/JENA-1527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16443886#comment-16443886
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ASF subversion and git services commented on JENA-1527:
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Commit ec67a007074b6beb42c72ae9a257e1876dd4a8b1 in jena's branch
refs/heads/master from [~andy.seaborne]
[ https://git-wip-us.apache.org/repos/asf?p=jena.git;h=ec67a00 ]
JENA-1527: Create PrefixMap on each getPrefixMapping
> GraphTDB caches prefix map across transactions.
> -----------------------------------------------
>
> Key: JENA-1527
> URL: https://issues.apache.org/jira/browse/JENA-1527
> Project: Apache Jena
> Issue Type: Bug
> Components: TDB
> Affects Versions: Jena 3.7.0
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Major
>
> The pattern below causes transaction errors ("BlockMgrJournal not active")
> because the pmap is carried from trasnaction1 to transaction 2 in the
> GraphBase cache (member "pm").
> {noformat}
> Graph g = dsg.getGraph(gn1);
> Txn.executeWrite(dsg, ()->{
> // Get, do not use. ** GraphBase caches **
> PrefixMapping pmap = g.getPrefixMapping();
> });
> Txn.executeWrite(dsg, ()-> {
> PrefixMapping pmap = g.getPrefixMapping();
> pmap.setNsPrefix("x0", "http:/example/x0#");
> });
> {noformat}
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