Re: [basex-talk] ArrayIndexOutOfBoundsException withe BaseX version 8.5

Hi Simon,

Thanks, the problem has been fixed. We are currently collecting more feedback; the next patch release (8.5.1) will be due next week.

Cheers, Christian

[1] http://files.basex.org/releases/latest/

On Wed, Jul 6, 2016 at 3:11 PM, Simon Chatelain schatela@gmail.com wrote:

Hello,

I just updated BaseX to the last version (8.5), and I am now facing some issues, while with the previous version (8.4.4) my application was working flawlessly.

My application receive XML documents from a TCP socket and store them in BaseX, in parallel and upon user request the same collection is queried. For both adding new documents and querying the collection, I am using a LocalSession, each one in its own thread.

The problem is that the following exception occurs very often, and when it happens, it seems to corrupt definitely the DB.

I wrote 2 simple test cases. The ArrayExceptionTest.java exhibits the problem while NoArrayExceptionTest.java does not.

The only difference between the 2 is:

· ArrayExceptionTest.java uses LocalSession for adding documents to and querying the collection

· NoArrayExceptionTest.java uses LocalSession only for querying the collection, adding documents in the collection is done by using directly the Context.

org.basex.core.BaseXException: Improper use? Potential bug? Your feedback is welcome:

Contact: basex-talk@mailman.uni-konstanz.de

Version: BaseX 8.5

Java: Oracle Corporation, 1.7.0_80

OS: Windows 7, x86

Stack Trace:

java.lang.ArrayIndexOutOfBoundsException: 2147483647

        at

org.basex.io.random.TableDiskAccess.fpre(TableDiskAccess.java:501)

        at

org.basex.io.random.TableDiskAccess.cursor(TableDiskAccess.java:452)

        at

org.basex.io.random.TableDiskAccess.read2(TableDiskAccess.java:155)

        at org.basex.data.Data.nameId(Data.java:360)

        at org.basex.data.Data.name(Data.java:375)

        at org.basex.query.value.node.DBNode.name(DBNode.java:169)

        at org.basex.query.expr.path.NameTest.eq(NameTest.java:92)

        at org.basex.query.func.db.DbAccess$1.next(DbAccess.java:67)

        at org.basex.query.func.db.DbAccess$1.next(DbAccess.java:62)

        at org.basex.query.iter.Iter.value(Iter.java:53)

        at org.basex.query.expr.ParseExpr.value(ParseExpr.java:68)

        at org.basex.query.QueryContext.value(QueryContext.java:417)

        at

org.basex.query.expr.path.CachedPath.nodeIter(CachedPath.java:36)

        at org.basex.query.expr.path.AxisPath.iter(AxisPath.java:78)

        at org.basex.query.expr.path.AxisPath.iter(AxisPath.java:51)

        at org.basex.query.expr.gflwor.For$1.next(For.java:109)

        at org.basex.query.expr.gflwor.OrderBy$1.sort(OrderBy.java:76)

        at org.basex.query.expr.gflwor.OrderBy$1.next(OrderBy.java:57)

        at org.basex.query.expr.gflwor.GFLWOR$1.next(GFLWOR.java:96)

        at org.basex.query.func.fn.FnCount.item(FnCount.java:27)

        at org.basex.query.expr.ParseExpr.iter(ParseExpr.java:44)

        at org.basex.query.MainModule.iter(MainModule.java:118)

        at org.basex.query.QueryContext.iter(QueryContext.java:340)

        at org.basex.query.QueryProcessor.iter(QueryProcessor.java:91)

        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:253)

        at org.basex.core.Command.execute(Command.java:99)

        at

org.basex.api.client.LocalSession.execute(LocalSession.java:132)

        at org.basex.api.client.Session.execute(Session.java:36)

        at

basextest.ArrayExceptionTest$1.run(ArrayExceptionTest.java:57)

        at org.basex.core.Command.execute(Command.java:100)

        at

org.basex.api.client.LocalSession.execute(LocalSession.java:132)

        at org.basex.api.client.Session.execute(Session.java:36)

        at

basextest.ArrayExceptionTest$1.run(ArrayExceptionTest.java:57)

Regards

Simon