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https://issues.apache.org/jira/browse/JENA-1683?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne resolved JENA-1683.
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Resolution: Information Provided
> SPARQL Updates get stuck on high concurrency of updates
> -------------------------------------------------------
>
> Key: JENA-1683
> URL: https://issues.apache.org/jira/browse/JENA-1683
> Project: Apache Jena
> Issue Type: Bug
> Reporter: Abhranil Chatterjee
> Priority: Major
> Attachments: Screen Shot 2019-03-19 at 3.44.56 PM.png
>
>
> While doing performance test of Jena Fuseki (latest release 3.10.0, using
> jena-text for lucene index) with a mixed set of sparql-query and
> sparql-update requests, I found that SPARQL_Update becomes unserviceable.
> SPARQL_Query still functions normally. Sharing Screen shot of JMC JMX console
> where threads seem to be WAITING infinitely for acquiring writer lock.
> !Screen Shot 2019-03-19 at 3.44.56 PM.png!
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