Andy,
Adding the code as mentioned in your earlier post I get the following:
RecordRangeIterator.iterator -- No such block (pageId=117440534,
fromRec=0000000000000000000000000000000000000000000000000000000000000000,
toRec=0000000000000001000000000000000000000000000000000000000000000000)
Thanks
Steve Groeger
From: Andy Seaborne <a...@apache.org>
To: users@jena.apache.org,
Date: 26/01/2014 19:57
Subject: Re: BlockException: No such block
Steve,
I'm not getting systematic failures, even after running multiple times
for well over 4 hours. I saw one failure but had several runs with no
failure at all. Looks like my setup does not have the right timing.
I've changed the internal exception point to print (stderr) some details
and exit the VM:
if ( ! pageMgr.valid(pageId) ) {
String msg =
"RecordRangeIterator.iterator -- No such block (pageId="+
pageId+
", fromRec="+fromRec+", toRec="+toRec+ ")" ;
System.err.println(msg) ;
System.exit(0) ;
throw new BlockException(msg) ;
}
Do you have some test servers you could run your test code with the
development Jena? Ideally, running multiple tests so we build up a
number of outcomes to see if there is a pattern.
https://repository.apache.org/content/repositories/snapshots/org/apache/jena/
apache-jena/2.11.2-SNAPSHOT for a binary build or use maven directly on
apache-jena-libs.
The other thing that may well be needed is a more sensitive test case.
Running in the debugger is too slow to be practical.
What other patterns of transactions have you tried?
Andy
On 24/01/14 16:00, Steve Groeger wrote:
> Andy,
>
> I am currently running with the TDB being written to my harddrive (of my
> Linux RHEL 64bit machine). This failure can sometimes take up to 3-4
hours
> before it fails.
> I have tried using a RAM disk but it fills up before the failure occurs
as
> I can only give it 10Gb of space and due the test the TDB does get very
> large due to all the creates & deletes.
> I am running on RHEL 6.4 with the following JVM:
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build
> pxa6460sr15-20131017_01(SR15))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64
> jvmxa6460sr15-20131016_170922 (JIT enabled, AOT enabled)
> J9VM - 20131016_170922
> JIT - r9_20130920_46510ifx2
> GC - GA24_Java6_SR15_20131016_1337_B170922)
> JCL - 20131015_01
>
> Thanks
> Steve Groeger
> IBM WebSphere Service Registry Development
> MP 211, Hursley
> Tel: (44) 1962 816911 Mobex: 279990 Mobile: 07718 517 129
> Fax (44) 1962 816800
> Lotus Notes: Steve Groeger/UK/IBM
> Internet: groe...@uk.ibm.com
>
>
>
> From: Andy Seaborne <a...@apache.org>
> To: users@jena.apache.org,
> Date: 24/01/2014 13:57
> Subject: Re: BlockException: No such block
>
>
>
> On 24/01/14 07:18, Steve Groeger wrote:
>> It took 16690 iterations of the writer thread to obtain this error but
> as
>> you can see the reader thread gets the exception when trying to execute
>> this line:
>
> How long in time did that take? As it may be a timing issue, do you
> have an SSD?
>
> Running
>
> java version "1.7.0_51"
> OpenJDK Runtime Environment (IcedTea 2.4.4)
(7u51-2.4.4-0ubuntu0.13.10.1)
> OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)
>
> Andy
>
>
>
> Unless stated otherwise above:
> IBM United Kingdom Limited - Registered in England and Wales with number
> 741598.
> Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6
3AU
>
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
