Andrey,
Please see below for the answer to your questions.
On Friday, August 21, 2015 at 3:41:53 AM UTC-4, Andrey Lomakin wrote:
>
> Hi,
> 1. What version do you use ?
>
>>> Latest OrientDB 2.1
> 2. Do you see data restore process after database startup ?
>
>>> No, I did not see nay data restore process.
> 3. Do you use remote or embedded version ?
>
>>> I am using embedded version.
>
> What do you mean by "I got some error message about some of vertex has a
> different version from my current vertex version." ?
>
> >>> I killed JVM during the unit test of inserting new vertex and edges.
Right after that, I started unit test again. Then OrientDB throw out an
exception and indicates, that for the vertex I try to insert, there is a
newer version (version 22) already in the OrientDB. The one I try to insert
has the version 21.
> Did you load version from database, change vertex and store it and you get
> this exception ?
>
>>> No, I called addVertex method to add new vertex.
> Did you run updates in parallel when you get this exception ?
>
>>> No, my unit test was single threaded.
>
>
If you do hard kill of jvm in the middle of transaction you will any way
> have database in inconsistent state and during restart transaction will be
> rolled back.
>
> What additional signs of DB corruption have you send aside of concurrent
> version modification exception ?
>
>>> This is the only exception I saw and it prevent me from going further.
Thanks,
Tai
>
> On Thu, Aug 20, 2015 at 10:48 PM Tai Hu <[email protected] <javascript:>>
> wrote:
>
>> Hi all,
>> I am working on a project to port from neo4j to OrientDB. Today
>> during my debug process, I kill the JVM before a transaction finished. Then
>> my OrientDB is corrupted. When I try to start it again, I got some error
>> message about some of vertex has a different version from my current vertex
>> version. I found this issue is very easy to reproduce, just need to kill
>> JVM during a long delete or update transaction and OrientDB will be
>> corrupted. Since we are developing a desktop solution, so it will be very
>> common that user kill the app at any moment, my question is "Is there a way
>> to recover from those of corruption?"
>>
>> Thanks,
>>
>> Tai
>>
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