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https://issues.apache.org/jira/browse/JENA-1136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15140713#comment-15140713
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Andy Seaborne commented on JENA-1136:
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This may be partially related : JENA-1043 ("Running Fuseki in Tomcat does not
respect Tomcat manager stop/start.") That would affect the timing of clearing
up or effective Fuseki shutdown.
Fuseki could better work with the Tomcat webapp lifecycle, though of course
Tomcat or standalone Fuseki may also just crash out in all sorts of ways.
Tomcat's slow-to-really stop characteristic is a bit of a gotcha.
> Stopping Fuseki under Tomcat seems not to remove tdb and lucene locks
> ---------------------------------------------------------------------
>
> Key: JENA-1136
> URL: https://issues.apache.org/jira/browse/JENA-1136
> Project: Apache Jena
> Issue Type: Bug
> Components: Fuseki
> Affects Versions: Fuseki 2.4.0
> Environment: CentOS 5.x
> Reporter: Joachim Neubert
> Assignee: Rob Vesse
>
> When restarting Tomcat with the latest Fuseki snapshot
> (apache-jena-fuseki-2.4.0-20160209.095958-47.tar.gz), the application can't
> be started:
> {noformat}
> [2016-02-10 06:48:04] Config INFO FUSEKI_HOME=/opt/fuseki
> [2016-02-10 06:48:04] Config INFO FUSEKI_BASE=/opt/fuseki2/run
> [2016-02-10 06:48:04] Config INFO Shiro file:
> file:///opt/fuseki2/run/shiro.ini
> [2016-02-10 06:48:04] Config INFO Context path = /fuseki
> [2016-02-10 06:48:04] Config INFO Configuration file:
> /opt/fuseki2/run/config.ttl
> [2016-02-10 06:48:04] Server ERROR Exception in initialization: Can't
> open database at location /opt/apache-jena-fuseki-2.4.0-SNAPSHOT/run/system/
> as it is already
> locked by the process with PID 23588. TDB databases do not permit concurrent
> usage across JVMs so in order to prevent possible data corruption you cannot
> open this loc
> ation from the JVM that does not own the lock for the dataset
> Feb 10, 2016 6:48:04 AM org.apache.catalina.core.StandardContext startInternal
> {noformat}
> After manually deleting all tdb.lock files, it barks on the text indexes:
> {noformat}
> [2016-02-10 06:53:49] Config INFO FUSEKI_HOME=/opt/fuseki
> [2016-02-10 06:53:49] Config INFO FUSEKI_BASE=/opt/fuseki2/run
> [2016-02-10 06:53:49] Config INFO Shiro file:
> file:///opt/fuseki2/run/shiro.ini
> [2016-02-10 06:53:49] Config INFO Context path = /fuseki
> [2016-02-10 06:53:49] Config INFO Configuration file:
> /opt/fuseki2/run/config.ttl
> [2016-02-10 06:53:51] Server ERROR Exception in initialization: caught:
> org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out:
> NativeFSLock@/opt/thes/var/stw/9.0/tdb_lucene/write.lock
> {noformat}
> After deleting these manually, too, Fuseki starts. (So I've added the cleanup
> temporarily to my tomcat stop function in the service definition file.)
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