Just found out that I was storing the graphDb in another class and I did
not update the reference to it. Sorry for spamming.
Kind regards,
Cherie
On Saturday, 4 June 2016 18:32:28 UTC+1, Cherie Pun wrote:
>
> Hi,
>
> I wrote this snippet of code to restart the database, but it's throwing
> errors.
>
>> private void restartDatabase(){
>> if(graphDb != null && graphDb.isAvailable(0)){
>> graphDb.shutdown();
>> }
>> graphDb = new GraphDatabaseFactory()
>> .newEmbeddedDatabaseBuilder( new File(PATH_TO_DATABASE ))
>> .setConfig(GraphDatabaseSettings.allow_store_upgrade,
>> "true")
>> .newGraphDatabase();
>> registerShutdownHook( graphDb );
>> }
>
>
> private void registerShutdownHook( final GraphDatabaseService graphDb )
>> {
>> // Registers a shutdown hook for the Neo4j instance so that it
>> // shuts down nicely when the VM exits (even if you "Ctrl-C" the
>> // running application).
>> Runtime.getRuntime().addShutdownHook( new Thread()
>> {
>> @Override
>> public void run()
>> {
>> graphDb.shutdown();
>> }
>> } );
>> }
>
>
> Stacktrace:
>
>> Exception in thread "main"
>> org.neo4j.kernel.impl.core.ThreadToStatementContextBridge$BridgeDatabaseShutdownException:
>>
>> This database is shutdown.
>> at
>> org.neo4j.kernel.impl.core.ThreadToStatementContextBridge.checkIfShutdown(ThreadToStatementContextBridge.java:96)
>> at
>> org.neo4j.kernel.impl.core.ThreadToStatementContextBridge.hasTransaction(ThreadToStatementContextBridge.java:43)
>> at
>> org.neo4j.kernel.impl.factory.ClassicCoreSPI.isInOpenTransaction(ClassicCoreSPI.java:199)
>> at
>> org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTransaction(GraphDatabaseFacade.java:335)
>> at
>> org.neo4j.kernel.impl.factory.GraphDatabaseFacade.beginTx(GraphDatabaseFacade.java:330)
>> ....
>
>
> Any idea why the database is still shutdown instead of restarted? Thanks.
>
> Kind regards,
> Cherie
>
> On 4 June 2016 at 15:34, 'Michael Hunger' via Neo4j <
> [email protected]> wrote:
>
>> Shutdown and create new, yes
>>
>> Von meinem iPhone gesendet
>>
>> Am 04.06.2016 um 14:17 schrieb Cherie Pun <[email protected]>:
>>
>> If I am using java GraphDatabaseService, do I need to create a new
>> embedded database to restart it? Thanks.
>>
>> Kind regards,
>> Cherie
>>
>> On 4 June 2016 at 03:01, 'Michael Hunger' via Neo4j <
>> [email protected]> wrote:
>>
>>> Just restart the db after deleting a lot of relationships will enable
>>> record-reuse.
>>>
>>> > Am 04.06.2016 um 01:49 schrieb Cherie Pun <[email protected]>:
>>> >
>>> > Hi,
>>> >
>>> > I have seen a few questions that were posted from before that it does
>>> not free the space up immediately. My application is running analysis over
>>> the database repeatedly but each time inserting different number of
>>> relationships so I have to remove them before I run the next iteration. The
>>> database size seems to be growing continuously even when the relationships
>>> are removed. I am wondering if the size of the database will slow my
>>> application down because there are so many unused ids.
>>> >
>>> > Thanks!
>>> >
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