I tried it both on the browser AND from neo4j nodejs client. When it
doesn't work, it doesn't work on both of them.
My os is ubuntu 12.04.

Like I said, sometimes it doesn't work, so i do 'neo4j restart' and then it
works...



On Mon, Jun 30, 2014 at 9:42 PM, Mattias Persson <[email protected]>
wrote:

> This could be a browser issue actually. I tried running your query
> directly via a Cypher ExecutionEngine, and no matter how many times I
> tried, it always gave me the 860 results back.
>
>
> On Tue, Jun 24, 2014 at 10:20 AM, shai katzir <[email protected]>
> wrote:
>
>> 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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>
>
>
> --
> Mattias Persson
> Neo4j Hacker at Neo Technology
>
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-- 

Shai Katzir
CTO, Donde <http://bit.ly/MNRdhN>
M: (650) 687 7424

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