Downgraded from trial enterprise to community license - Stardog deleted my database

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Håvard Ottestad

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Jan 23, 2017, 2:11:46 AM1/23/17

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Hi,

By accident i rebuilt my stardog docker container with the wrong license. I was testing out how the system handled 100 000 000 triples, which was not great on my limited resources (xmx2g offheap 3g). So I decided to up the memory a bit, and rebuilt my container with the wrong license.

I have a script that automatically creates my database when stardog starts, this usually fails due to the database already existing. It also inserts som data into the database. However this time stardog gave some exceptions about needing to rebuild the index, so I ran the repair command but it couldn't find the database. Restarted stardog to see if that helped. Now my database is gone.

I have checked the .unusable directory, but the directory doesn't exist.

Cheers,

Håvard

Important parts from my log:

ERROR 2017-01-23 03:15:03,213 [Stardog.Executor-1661] com.complexible.common.protocols.server.rpc.ServerHandler:exceptionCaught(428): exceptionCaughtServerHandler

java.lang.OutOfMemoryError: GC overhead limit exceeded

ERROR 2017-01-23 03:15:03,215 [StardogServer.WorkerGroup-9] com.complexible.stardog.protocols.http.server.HttpMessageEncoder:createErrorResponse(293): The result encoder received an error message it could not encode, error was:

java.lang.OutOfMemoryError: GC overhead limit exceeded

-------- RESTART --------

INFO 2017-01-23 07:40:16,230 [main] com.complexible.stardog.StardogKernel:start(1878): Initializing Stardog

INFO 2017-01-23 07:40:17,571 [main] com.complexible.stardog.StardogKernel:initDatabases(1940): Database testSesame will not be available due to license restrictions: Database size exceeds the limit allowed by the license: 25000000

INFO 2017-01-23 07:40:18,564 [main] com.complexible.stardog.cli.impl.ServerStart:call(260): Memory options

INFO 2017-01-23 07:40:18,568 [main] com.complexible.stardog.cli.impl.ServerStart:call(261): Min Heap Size: 252M

INFO 2017-01-23 07:40:18,569 [main] com.complexible.stardog.cli.impl.ServerStart:call(262): Max Heap Size: 2.7G

INFO 2017-01-23 07:40:18,569 [main] com.complexible.stardog.cli.impl.ServerStart:call(263): Max Off-Heap : 4.0G

INFO 2017-01-23 07:40:18,570 [main] com.complexible.stardog.cli.impl.ServerStart:call(264): System Memory: 16G

ERROR 2017-01-23 07:40:21,027 [Stardog.Executor-0] com.complexible.common.protocols.server.rpc.ServerHandler:exceptionCaught(428): exceptionCaughtServerHandler

com.complexible.stardog.server.UnknownDatabaseException: Database 'testSesame' does not exist.

at com.complexible.stardog.server.UnknownDatabaseException.create(UnknownDatabaseException.java:28) ~[stardog-core-shared-4.2.2.jar:?]

at com.complexible.stardog.StardogKernel.get(StardogKernel.java:2283) ~[stardog-4.2.2.jar:?]

at com.complexible.stardog.StardogKernel.assertOnline(StardogKernel.java:2288) ~[stardog-4.2.2.jar:?]

at com.complexible.stardog.StardogKernel.authenticate(StardogKernel.java:707) ~[stardog-4.2.2.jar:?]

at com.complexible.stardog.protocols.server.SPECServerFunction.auth(SPECServerFunction.java:193) ~[stardog-protocols-spec-server-4.2.2.jar:?]

at com.complexible.stardog.protocols.server.SPECServerFunction.handleMessage(SPECServerFunction.java:149) ~[stardog-protocols-spec-server-4.2.2.jar:?]

at com.complexible.common.protocols.server.rpc.ServerHandler.lambda$handleMessage$1(ServerHandler.java:337) ~[stardog-protocols-api-server-4.2.2.jar:?]

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_92-internal]

at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_92-internal]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_92-internal]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_92-internal]

at java.lang.Thread.run(Thread.java:745) [?:1.8.0_92-internal]

ERROR 2017-01-23 07:40:25,706 [Stardog.Executor-0] com.complexible.common.protocols.server.rpc.ServerHandler:exceptionCaught(428): exceptionCaughtServerHandler