I'm using the C# driver. but still, it doesn't look like a high level problem. neither a query problem. thats why I didn't post some code snippets. To make sure, I just tried to execute the INSPECT command in the CLI. same exception. Also the db:optimize fails with the same exception, although with a different stacktrace, which I will post below.
Altough the race condition point of two processes interfering is a good point, I'm currently having trouble to do anything useful with a session from which a race condition would matter. If, then it must have happened while the import was running along with the other, non-importing process. As I mentioned in the first post, while the import process was still ongoing, the other process already started to have the exception at a very late progress of the import. After the import was done, I was still able to operate on the db as normal, but only with the session in the process which did the long-run import. To restore the second process its session state to normal, I restarted the webapplication, which closes both sessions. After that, I'm no longer to operate on the db. Not even directly from the CLI. Seems it is a sort of a persisted data state which the low level basex code can't handle when trying to reread it into to the memory. I 've already googled around for the same exception in BaseX, seems it was an issue in some older versions too. here the stacktrace when running db:optimize: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk@mailman.uni-konstanz.de Version: BaseX 9.0.2 beta Java: Oracle Corporation, 1.8.0_151 OS: Linux, amd64 Stack Trace: java.lang.ArrayIndexOutOfBoundsException: 52 at org.basex.util.hash.TokenSet.key(TokenSet.java:128) at org.basex.data.Data.name(Data.java:388) at org.basex.io.serial.Serializer.node(Serializer.java:414) at org.basex.io.serial.Serializer.node(Serializer.java:158) at org.basex.io.serial.Serializer.node(Serializer.java:345) at org.basex.io.serial.Serializer.node(Serializer.java:158) at org.basex.io.serial.Serializer.serialize(Serializer.java:109) at org.basex.core.cmd.OptimizeAll$DBParser.parse(OptimizeAll.java:200) at org.basex.build.Builder.parse(Builder.java:77) at org.basex.build.DiskBuilder.build(DiskBuilder.java:77) at org.basex.core.cmd.OptimizeAll.optimizeAll(OptimizeAll.java:122) at org.basex.query.up.primitives.db.DBOptimize.apply(DBOptimize.java:124) at org.basex.query.up.DataUpdates.apply(DataUpdates.java:175) at org.basex.query.up.ContextModifier.apply(ContextModifier.java:120) at org.basex.query.up.Updates.apply(Updates.java:157) at org.basex.query.QueryContext.iter(QueryContext.java:341) at org.basex.query.QueryProcessor.iter(QueryProcessor.java:90) at org.basex.core.cmd.AQuery.query(AQuery.java:92) at org.basex.core.cmd.XQuery.run(XQuery.java:22) at org.basex.core.Command.run(Command.java:257) at org.basex.core.Command.execute(Command.java:93) at org.basex.server.ClientListener.run(ClientListener.java:140) On Wed, May 9, 2018 at 11:45 AM, Alexander Holupirek <a...@holupirek.de> wrote: > Hi, > > (please also respond to the list. Others might have suggestions as well > ;-) > > it still would be great if you could provide even more details. For > instance, what programming language do you use?Ideally include a Short, > Self Contained, Correct (Compilable), Example (SSCCE) [1] in order to let > people reproduce the behaviour. > > From a high level perspective, are you sure the sessions do not > interfere? Do you additionally work with BaseXGUI on the database, while > your program is importing? > > Cheers, > Alex > > > [1] http://sscce.org/ > > > On 9. May 2018, at 09:26, halit tiryaki <halit.tiry...@gmail.com> wrote: > > > > hello, thanks for the fast response. > > > > It happened in the process of a large Import. There were two processes > with each a respective Session to BaseX. One process with the Open session > which did the Import was doing fine. The Second process however Starter > having the mentioned exception. After stopping Both processes and > restarting the app, no basex Session is now able to operate normal. > > > > The ArrayIndexOutOfBoundsException already comes in executing the > command INSPECT. > > > > The db-Info returns following: > > > > > > info db: > > Database Properties > > NAME: XXX > > SIZE: 5877 kB > > NODES: 124051 > > DOCUMENTS: 5497 > > BINARIES: 0 > > TIMESTAMP: 2018-05-09T05:20:44.000Z > > UPTODATE: false > > > > Resource Properties > > INPUTPATH: > > INPUTSIZE: 0 b > > INPUTDATE: 2018-05-09T04:32:10.539Z > > > > Indexes > > TEXTINDEX: true > > ATTRINDEX: true > > TOKENINDEX: false > > FTINDEX: false > > TEXTINCLUDE: /item_User/node()/User:Email > > ATTRINCLUDE: /item_UserImage/node()/UserImage:Id > > TOKENINCLUDE: > > FTINCLUDE: /item_XXX/node()/XXX:[german] > > LANGUAGE: English > > STEMMING: false > > CASESENS: false > > DIACRITICS: false > > STOPWORDS: > > UPDINDEX: true > > AUTOOPTIMIZE: false > > MAXCATS: 100 > > MAXLEN: 96 > > SPLITSIZE: 0 > > Alexander Holupirek <a...@holupirek.de> schrieb am Mi., 9. Mai 2018 > 08:44: > > Hi, > > > > could you please provide some more details? > > The best would be a reproducible example. > > > > Thanks, > > Alex > > > > > > > On 9. May 2018, at 06:50, halit tiryaki <halit.tiry...@gmail.com> > wrote: > > > > > > Hello, > > > > > > got a serious problem here. any ideas? thanks > > > > > > Improper use? Potential bug? Your feedback is welcome: > > > Contact: basex-talk@mailman.uni-konstanz.de > > > Version: BaseX 9.0.2 beta > > > Java: Oracle Corporation, 1.8.0_151 > > > OS: Linux, amd64 > > > Stack Trace: > > > java.lang.ArrayIndexOutOfBoundsException: 4288 > > > at org.basex.io.random.TableDiskAccess.read1(TableDiskAccess.java:151) > > > at org.basex.data.Data.kind(Data.java:294) > > > at org.basex.query.value.node.DBNode$4.next(DBNode.java:332) > > > at org.basex.query.value.node.DBNode$4.next(DBNode.java:323) > > > at org.basex.query.expr.path.IterStep$1.next(IterStep.java:38) > > > at org.basex.query.expr.path.IterStep$1.next(IterStep.java:32) > > > at org.basex.query.QueryContext.next(QueryContext.java:392) > > > at org.basex.query.expr.path.IterPath$1.next(IterPath.java:50) > > > at org.basex.query.expr.path.IterPath$1.next(IterPath.java:34) > > > at org.basex.query.expr.ParseExpr.item(ParseExpr.java:58) > > > at org.basex.query.expr.ParseExpr.atomItem(ParseExpr.java:84) > > > at org.basex.query.func.fn.FnConcat.item(FnConcat.java:20) > > > at org.basex.query.expr.ParseExpr.value(ParseExpr.java:71) > > > at org.basex.query.expr.gflwor.Let$LetEval.next(Let.java:177) > > > at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:72) > > > at org.basex.query.expr.path.CachedPath.nodeIter(CachedPath.java:36) > > > at org.basex.query.expr.path.AxisPath.iter(AxisPath.java:69) > > > at org.basex.query.expr.gflwor.For$1.next(For.java:107) > > > at org.basex.query.expr.gflwor.OrderBy$1.sort(OrderBy.java:73) > > > at org.basex.query.expr.gflwor.OrderBy$1.next(OrderBy.java:54) > > > at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:72) > > > at org.basex.query.expr.gflwor.Let$LetEval.next(Let.java:177) > > > at org.basex.query.expr.gflwor.GFLWOR$1.next(GFLWOR.java:87) > > > at org.basex.query.QueryContext.next(QueryContext.java:392) > > > at org.basex.query.scope.MainModule$1.next(MainModule.java:122) > > > at org.basex.core.cmd.AQuery.query(AQuery.java:94) > > > at org.basex.core.cmd.XQuery.run(XQuery.java:22) > > > at org.basex.core.Command.run(Command.java:257) > > > at org.basex.core.Command.execute(Command.java:93) > > > at org.basex.server.ClientListener.run(ClientListener.java:140) > > > >
