It's getting a little weird.
I run the next query :
*match (pr:Property {name: "BLACK"})*
*match (pr)--(it)*
*return pr,it*
where "pr:Property {name: "BLACK"} " is a "densed node".
Some times I get 0 results for this query in the browser, and then I
restart the graph server and I get ~900 results.
I guess the data isn't lost, it's just sometimes doesn't get retrieved by
the cypher queries ...
On Monday, June 23, 2014 11:02:07 AM UTC+3, [email protected] wrote:
>
> Hi Shai,
>
> I got access to your store and using the backed up nodestore and
> relationshipstore in upgrade_backup, I compared contents of the upgraded
> (2.1.2) store to that of the 2.0.3 store.
>
> What I found found was that all nodes, properties and relationships are
> exactly the same. I dumped nodes, their properties and their relationships
> (and properties) to text files, sorted, for both stores and they have the
> same contents, down to the last character.
>
> I also did this for just the INCOMING relationships, just for the heck of
> it, since you observed issues with those. And the outcome is the same.
>
> Can you redo your checks for the upgraded store and provide more details
> about the problems?
>
> Best,
> Mattias
>
> On Saturday, June 21, 2014 4:58:04 PM UTC+2, shai katzir wrote:
>>
>> Of course I have backup, and it was only a test, but not a successful one.
>> It's hard to say what data is lost.
>>
>> I think that the dense nodes (the ones that I know have a lot of incoming
>> relationships) lost all their relationships. That is also correspond to the
>> nature of the version update.
>>
>>
>> בתאריך יום חמישי, 19 ביוני 2014 23:14:21 UTC+3, מאת Axel:
>>>
>>> Hi,
>>>
>>> can you be more precise what kind of data was missing? There are some
>>> changes in the way relationships are stored in Neo4j, and the previous
>>> release 2.1.1 had some issues related to databases upgraded from 2.0.x. But
>>> they seem to be fixed with 2.1.2, see http://neo4j.com/blog/neo4j-2-1-2/
>>> and https://github.com/neo4j/neo4j/issues/2540.
>>>
>>> Do you have a backup? If yes, I would suggest to go back to 2.0.3 for
>>> now.
>>>
>>> Please open an issue on Github (https://github.com/neo4j/neo4j/issues)
>>> with a detailed description of your data, and offer the upgraded database
>>> to the Neo guys to investigate.
>>>
>>> Best,
>>> Axel
>>>
>>>
>>> Am 19.06.2014 10:37, schrieb shai katzir:
>>>
>>> Just now, I have upgraded my neo4j server from 2.0.3 to 2.1.2 by
>>> explicit update (allow_store_update=true).
>>> After upgrading, half of my test cases didn't work!
>>>
>>> Going through the data, I found out a lot of it is missing.
>>>
>>> I would add any data or log to allow investigating the problem but
>>> there is none...
>>>
>>> All I have is the console.log showing everything is fine:
>>>
>>>
>>> 2014-06-19 08:01:42.094+0000 INFO [API] Setting startup timeout to:
>>> 120000ms based on -1
>>> Starting upgrade of database store files
>>> 2014-06-19 08:01:42.529+0000 INFO [org.neo4j]: Starting upgrade of
>>> database store files
>>> # dense nodes: 2590, which is 22 %
>>> ..........2014-06-19 08:01:44.558+0000 INFO [org.neo4j]: Store upgrade
>>> 10% complete
>>> 10%
>>> ..........2014-06-19 08:01:45.560+0000 INFO [org.neo4j]: Store upgrade
>>> 20% complete
>>> 20%
>>> ..........2014-06-19 08:01:45.560+0000 INFO [org.neo4j]: Store upgrade
>>> 30% complete
>>> 30%
>>> ..........2014-06-19 08:01:47.728+0000 INFO [org.neo4j]: Store upgrade
>>> 40% complete
>>> 40%
>>> ..........2014-06-19 08:01:48.729+0000 INFO [org.neo4j]: Store upgrade
>>> 50% complete
>>> 50%
>>> ..........2014-06-19 08:01:48.923+0000 INFO [org.neo4j]: Store upgrade
>>> 60% complete
>>> 60%
>>> ..........2014-06-19 08:01:48.923+0000 INFO [org.neo4j]: Store upgrade
>>> 70% complete
>>> 70%
>>> ..........2014-06-19 08:01:48.923+0000 INFO [org.neo4j]: Store upgrade
>>> 80% complete
>>> 80%
>>> ..........2014-06-19 08:01:48.924+0000 INFO [org.neo4j]: Store upgrade
>>> 90% complete
>>> 90%
>>> ..........2014-06-19 08:01:48.924+0000 INFO [org.neo4j]: Store upgrade
>>> 100% complete
>>> 100%
>>> 2014-06-19 08:01:48.924+0000 INFO [org.neo4j.unsafe.impl.batchimport.
>>> ParallellBatchImporter] Import completed [TODO import stats]
>>> 2014-06-19 08:01:48.924+0000 INFO [org.neo4j.unsafe.impl.batchimport.
>>> ParallellBatchImporter] Import completed [TODO import stats]
>>> Finished upgrade of database store files
>>> 2014-06-19 08:01:49.578+0000 INFO [org.neo4j]: Finished upgrade of
>>> database store files
>>> 2014-06-19 08:01:<span style="color: #066;" clas
>>>
>>> ...
>>
>>
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