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Posted to dev@jena.apache.org by "Tom den Braber (JIRA)" <ji...@apache.org> on 2018/08/06 06:48:00 UTC
[jira] [Updated] (JENA-1586) Fuseki does not close files of dataset
when the dataset is removed
[ https://issues.apache.org/jira/browse/JENA-1586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tom den Braber updated JENA-1586:
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Attachment: (was: image-2018-08-06-08-22-25-767.png)
> Fuseki does not close files of dataset when the dataset is removed
> ------------------------------------------------------------------
>
> Key: JENA-1586
> URL: https://issues.apache.org/jira/browse/JENA-1586
> Project: Apache Jena
> Issue Type: Bug
> Components: Fuseki
> Affects Versions: Jena 3.6.0
> Environment: Debian 9.5 with Jena 3.6.0
> Reporter: Tom den Braber
> Priority: Minor
>
> When you remove a TDB-dataset over HTTP from the Fuseki server, Fuseki does not close the file.
> Steps to reproduce:
> First: create a dataset over HTTP with name 'x'. Then, delete the dataset with name 'x'. Now inspect the open files of the fuseki process by running {{lsof -p <FUSEKI_PROCESS_ID> }}you see that a dataset with name 'x' is still opened by the Fuseki-process.
> Impact:
> When a Fuseki process runs for a long time, and many datasets are created and deleted, it will in the end lead to a situation in which you cannot create new datasets anymore. Each attempt to creating a dataset will lead to a HTTP response code 500 with message 'java.nio.file.FileSystemException: /var/lib/fuseki/templates/config-tdb: Too many open files'. Also, keeping the files open leads (I suspect) to a higher memory usage than strictly needed.
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