Hi Jose,
Actually in our case, our transaction does not deal with more than at most
3-4K add/update/remove/read operations at a time. Do you mean # of
operations or size of objects?
Thanks
-Chris
On Wednesday, September 16, 2015 at 6:44:01 AM UTC-4, José Cornado wrote:
>
> My two cents:
>
> When I experience these performance drops, it has always been the case
> that I left too many graph operations accumulate. My ballpark threshold is
> 48K add/remove ops. It seems to do the job.
>
>
> On Friday, September 11, 2015 at 3:59:17 PM UTC-6, Chris Gomes wrote:
>>
>>
>> Hello,
>> I really hope someone can shed some light on the performance issues that we
>> have been experiencing. Thank you much in advance.
>>
>> Regards,
>> -Chris
>>
>> I have attached 2 html files - one is heap dump of OrientDB server and the
>> other is App 2 VM.
>> Below is also partial stack trace of App 2 and some code snippet where main
>> transaction boundaries are.
>>
>> We are getting long commit time and eventually runs out of memory, currently
>> *Orient *is becoming *unusable *for what we are trying to do with client
>> *App 2* as described below.
>>
>> *Background*:
>> Database Server instance using Java 8
>> 1) We run OrientDB using server.sh/bat as a standalone and with 1G of heap
>> space and default Disk Cache
>> Databases
>> 2) We have 2 databases created as plocal and graph, let's name them,
>> Expansion & Universe.
>> 3) 2 have 2 client applications, both are spring boot project with an
>> embedded jetty container, run as executable jars
>>
>> *Java Client Applications - Spring Boot using Java 8*
>> 4) App 1 - reads a large xml file (670 Meg and process each business unit of
>> at a time) and create Vertices and Edges based on the
>> business concepts described in the xml. NOTE, in both app we define the
>> schema for Vertices and Edge Type definitions.
>> For APP 1, Expansion DB barely has any index as we mostly write blindly as
>> an expansion of elements from XML. BUT, we will need to read the data
>> from APP 2. To load the file and expand the xml int vertex and edge
>> representation it takes anywhere from 55 to 2 hours, depending on SSD vs
>> regular disk, this is on a brand new clean DB.
>>
>> One thing that is clear, as data grows, same data file loaded again will
>> take longer to load, seems like linear growth. I noticed something in the
>> forum about this already.
>> This file has about 35,000 business unit worth of data. The raw size in DB
>> is 2,610,075 edges, 2,610,076 vertices. We have defined about 16 Vertices
>> (vertex types) and 23 Edges (edge types) in Expansion and Universe DB.
>> This is just one file and we will get incremental update everyday and will
>> grow over the time. So, we would need to be able to handle large amount of
>> data in MANY millions in both databases.
>>
>> App 1 runs fine with 256Meg of heap space and though it gets slower over the
>> time, it runs.
>>
>> *5) App 2 *- All edge types have non unique index as we need to look for
>> existing of vertices in an edge as well as we keep history of relationships
>> as in what point a relationship is no longer current.
>> We also have index for some of the Vertex where we have some business key we
>> need to query on. Overall # of indices are certainly much more than
>> Expansion DB,
>> but not overwhelming as we would be doing lot of bulk writing (create/update
>> vertices, create/update edges) as well as reading to look for existing
>> vertices or edges.
>>
>> 6) NOTE, we use connection pool and transaction. Our transaction boundary
>> would process a Business unit worth of data, which translates into* average
>> of 100 vertices/edges.*
>> However some extreme cases we could end up creating/updating about *1500
>> vertices/edges*.
>> 7) App 2 has 2 Graph connection Factory one for each DB (Expansion and
>> Universe). App reads one Business unit worth of vertices/edges from
>> Expansion DB and in a transaction writes (create/update/lookup) into
>> Universe DB.
>> *Average for this varies from 2 sec to 4 secs depending on SSD vs non-SSD
>> disks. *
>>
>> *8) With 1G of heap for the App2, it will eventually get out of memory
>> exception.* I have only been able to process 30,000 business units read from
>> Expansion DB and it took over 11 hours before getting out of memory.
>> This is on a SSD drive. At this performance, the app and DB becomes pretty
>> much unusable.
>>
>> 9) Tried few suggestions based on forum and documentation - *disabling
>> transaction log, but I don't think it made any real difference*.
>>
>> *Here's the stack trace from App 2. I have also heap dumps from both
>> OrientDB server and App 2.*
>>
>> Would love some insights as to what the options are. I am curious if anyone
>> else is using OrientDB for something like the way I described. I don't think
>> this usecase is anything out of the ordinary.
>>
>> *--- Stack Trace from Client App 2: Note, Caused by:
>> java.lang.OutOfMemoryError: Java heap space---*
>>
>> 2015-09-11 04:11:16.858 DEBUG 1132 --- [qtp174969681-23]
>> .b.u.u.UniverseMergeRequestServiceFacade : Processed 30555 statements with
>> an average of 1332 milliseconds
>> 2015-09-11 04:17:52.406 DEBUG 1132 --- [qtp174969681-23]
>> c.b.u.u.StatementUniverseMergeService :
>> {"delivery-id":"1e556f40-7e00-d9ba-9464-22000b9447eb","log-type":"universe-merge-statement","universe-merge-request-uuid":"c0fbbf7d-358e-4a01-a5c1-44007a311aab","statement-uid":"1e4ed31a-3631-df77-b997-22000a4590b6"}
>> 2015-09-11 04:17:55.268 DEBUG 1132 --- [qtp174969681-23]
>> c.b.u.u.StatementUniverseMergeService :
>> {"delivery-id":"1e556f40-7e00-d9ba-9464-22000b9447eb","log-type":"universe-merge-statement","universe-merge-request-uuid":"c0fbbf7d-358e-4a01-a5c1-44007a311aab","statement-uid":"1e4ed31a-3f9b-d96a-b997-22000a4590b6"}
>> 2015-09-11 04:18:01.435 DEBUG 1132 --- [qtp174969681-23]
>> c.b.u.u.StatementUniverseMergeService :
>> {"delivery-id":"1e556f40-7e00-d9ba-9464-22000b9447eb","log-type":"universe-merge-statement","universe-merge-request-uuid":"c0fbbf7d-358e-4a01-a5c1-44007a311aab","statement-uid":"1e4ed31a-3fe7-d518-b997-22000a4590b6"}
>> 2015-09-11 04:34:02.328 ERROR 1132 --- [qtp174969681-23]
>> .b.u.u.UniverseMergeRequestServiceFacade : Universe merge request for
>> deliveries failed for extraction date > 2001-01-01 00:00:00.0
>>
>> com.bps.commons.exception.StateDumpException: Exception thrown when creating
>> the statement due to Exception during response processing.
>> at
>> com.bps.urjanet.universe.StatementUniverseMergeService.merge(StatementUniverseMergeService.java:97)
>> at
>> com.bps.urjanet.universe.UniverseMergeRequestServiceFacade.processMergeRequest(UniverseMergeRequestServiceFacade.java:87)
>> at
>> com.bps.urjanet.universe.resource.UniverseMergeResource.requestUniverseMerge(UniverseMergeResource.java:47)
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>> at java.lang.reflect.Method.invoke(Unknown Source)
>> at
>> org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
>> at
>> org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:151)
>> at
>> org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:172)
>> at
>> org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:152)
>> at
>> org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:104)
>> at
>> org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:384)
>> at
>> org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:342)
>> at
>> org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:101)
>> at
>> org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:271)
>> at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
>> at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
>> at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
>> at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
>> at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
>> at
>> org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:297)
>> at
>> org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:254)
>> at
>> org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1030)
>> at
>> org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:377)
>> at
>> org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:381)
>> at
>> org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:344)
>> at
>> org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
>> at
>> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
>> at
>> org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:224)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:291)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
>> at
>> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
>> at
>> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:201)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
>> at
>> org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
>> at
>> org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration$MetricsFilter.doFilterInternal(MetricFilterAutoConfiguration.java:90)
>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
>> at
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
>> at
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
>> at
>> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
>> at
>> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
>> at
>> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
>> at
>> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
>> at
>> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
>> at
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>> at
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
>> at org.eclipse.jetty.server.Server.handle(Server.java:497)
>> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
>> at
>> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
>> at
>> org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
>> at
>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
>> at
>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
>> at java.lang.Thread.run(Unknown Source)
>> Caused by:
>> com.orientechnologies.orient.enterprise.channel.binary.OResponseProcessingException:
>> Exception during response processing.
>> at
>> com.orientechnologies.orient.enterprise.channel.binary.OChannelBinaryAsynchClient.throwSerializedException(OChannelBinaryAsynchClient.java:445)
>> at
>> com.orientechnologies.orient.enterprise.channel.binary.OChannelBinaryAsynchClient.handleStatus(OChannelBinaryAsynchClient.java:400)
>> at
>> com.orientechnologies.orient.enterprise.channel.binary.OChannelBinaryAsynchClient.beginResponse(OChannelBinaryAsynchClient.java:282)
>> at
>> com.orientechnologies.orient.enterprise.channel.binary.OChannelBinaryAsynchClient.beginResponse(OChannelBinaryAsynchClient.java:171)
>> at
>> com.orientechnologies.orient.client.remote.OStorageRemote.beginResponse(OStorageRemote.java:2136)
>> at
>> com.orientechnologies.orient.client.remote.OStorageRemote.commit(OStorageRemote.java:1364)
>> at
>> com.orientechnologies.orient.client.remote.OStorageRemoteThread.commit(OStorageRemoteThread.java:448)
>> at
>> com.orientechnologies.orient.core.tx.OTransactionOptimistic.doCommit(OTransactionOptimistic.java:596)
>> at
>> com.orientechnologies.orient.core.tx.OTransactionOptimistic.commit(OTransactionOptimistic.java:156)
>> at
>> com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2578)
>> at
>> com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2547)
>> at
>> com.tinkerpop.blueprints.impls.orient.OrientTransactionalGraph.commit(OrientTransactionalGraph.java:161)
>>
>>
>>
>> * at
>> com.bps.urjanet.universe.StatementUniverseMergeService.merge(StatementUniverseMergeService.java:85)
>> ... 95 common frames omittedCaused by: java.lang.OutOfMemoryError: Java
>> heap space*
>> 2015-09-11 04:34:02.349 ERROR 1132 --- [qtp174969681-23]
>> c.b.u.u.r.StateDumpExceptionMapper :
>> StateDumpExceptionMapper>>toResponse:Error Occured: Exception thrown when
>> updating the StatementsDelivery due to Transaction was rolled back more
>> times than it was started.
>> Transaction was rolled back more times than it was started.
>>
>>
>> com.bps.commons.exception.StateDumpException: Exception thrown when updating
>> the StatementsDelivery due to Transaction was rolled back more times than it
>> was started.
>> ...
>> Caused by:
>> com.orientechnologies.orient.core.exception.OTransactionException:
>> Transaction was rolled back more times than it was started.
>> at
>> com.orientechnologies.orient.core.tx.OTransactionOptimistic.rollback(OTransactionOptimistic.java:188)
>> at
>> com.orientechnologies.orient.core.tx.OTransactionOptimistic.rollback(OTransactionOptimistic.java:169)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.endResponse(ONetworkProtocolBinary.java:1764)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.readRecord(ONetworkProtocolBinary.java:1662)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.executeRequest(ONetworkProtocolBinary.java:353)
>> at
>> com.orientechnologies.orient.server.network.protocol.binary.OBinaryNetworkProtocolAbstract.execute(OBinaryNetworkProtocolAbstract.java:223)
>> at
>> com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:77)
>>
>>
>>
>> *///Code snippet of where the main transaction processing happens. This
>> method is called from another service to loop for each Business unit of
>> work.As you can see, each business unit of work is where transactions are
>> happening. *
>>
>> public TreeVertex merge(params...){
>>
>> List<Reference> references = new ArrayList<>();
>> List<MeasurementPeriod> measurementPeriods = new ArrayList<>();
>> List<SummaryData> summaryDatas = new ArrayList<>();
>> List<RateComponents> rateComponentsList = new ArrayList<>();
>> Map<String, OrientVertex> vertexMap = new HashMap<>(); //<UID,
>> Vertex> Only objects that have a UID that are created in process.
>>
>> *OrientGraph mergedGraph =
>> this.orientUniverseGraphFactory.getTx();* //Exception should flow
>> through. This is a problem.
>> OrientVertex statement = null;
>>
>> try {
>> *mergedGraph.begin();*
>>
>> *mergedGraph.getRawGraph().getTransaction().setUsingLog(false);*
>>
>>
>> statementProcessor.endEdgesWithStatementUid(mergedGraph, uid); //If any
>> edges are found with the statement UID, then end those relationships.
>>
>> statement = process(mergedGraph, expandedTreeVertex,
>> deliveryId, uid, vertexMap,
>> references, measurementPeriods,
>> summaryDatas, rateComponentsList
>> );
>>
>> *mergedGraph.commit();*
>>
>> } catch (Exception e) {
>> *mergedGraph.rollback();*
>>
>> throw new StateDumpException("Exception thrown when
>> creating the statement due to " + e.getMessage(), e)
>> .addStateDump("universeMergeRequestUuid",
>> universeMergeRequestUuid)
>> .addStateDump("deliveryId", deliveryId)
>> .addStateDump("statement-uid", uid);
>> } finally {
>>
>>
>> *if (mergedGraph != null) { mergedGraph.shutdown();
>> }*
>> }
>>
>> * mergedGraph = this.orientUniverseGraphFactory.getTx();
>> *//Exception should flow through. This is a problem.
>> try {
>>
>> *mergedGraph.begin();
>> mergedGraph.getRawGraph().getTransaction().setUsingLog(false);*
>>
>> childProcessor.postProcess(mergedGraph, statement,
>> references, measurementPeriods, summaryDatas, rateComponentsList);
>> *mergedGraph.commit();*
>>
>> } catch (Exception e) {
>> mergedGraph.rollback();
>>
>> throw new StateDumpException("Exception thrown when
>> creating the statement due to " + e.getMessage(), e)
>>
>> .addStateDump("universeMergeRequestUuid", universeMergeRequestUuid)
>> .addStateDump("deliveryId", deliveryId)
>> .addStateDump("uid", uid);
>> } finally {
>>
>>
>> *if (mergedGraph != null) { mergedGraph.shutdown();
>> }*
>> }
>>
>>
>> }
>> ----
>>
>>
--
---
You received this message because you are subscribed to the Google Groups
"OrientDB" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
