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 dick 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



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