The bug seems to occur in 3.1 & devel (not 3.0) when using the cursor API 
to fetch more documents than are fitting into the initial batch (default 
batchSize is 1000).
A fix for this is in progress.
Best regards
J

Am Mittwoch, 12. Oktober 2016 11:34:03 UTC+2 schrieb Jan:
>
> Hi Rob,
>
> obviously this is not intentional.
> We have tried reproducing this in 3.0 & devel, but with no luck yet.
>
> I am a bit puzzled because you mention that it is ArangoDB 3.0.10 showing 
> that issue. The 3.0 branch does and never contained the string 
> "DefaultCustomTypeHandler". I remember that code being added to devel, so 
> it may have got into the 3.1 branch, but not 3.0. Can you confirm the 
> problem is actually occurring in an ArangoDB 3.0? And could you please 
> provide the query that triggers the problem?
>
> Thanks
> Jan
>
> Am Mittwoch, 12. Oktober 2016 10:58:53 UTC+2 schrieb Rob Keevil:
>>
>> Hi,
>>
>> I am using arangoDB 3.0.10 and arangodb-java-driver 3.0.3 (latest 
>> stable).  I've written a java connector in my application, which is using 
>> arangoDriver.executeAqlQueryRaw to return a cursor of Json documents as 
>> Strings.
>>
>> My input collection contains some single-level Json documents, where all 
>> fields in the document are quoted strings (e.g. "business_address_city": 
>> "├ůMLI" ). My query is returning all documents in the collection.
>>
>> For every document returned, arangoDB logs in the console:
>>
>> 2016-10-12T08:21:02Z [1] WARNING DefaultCustomTypeHandler called
>>
>> As well as being messy, i think this is really affecting the performance 
>> of my application when selecting millions of documents.  Can anyone give me 
>> some pointers on what is happening?
>>
>> Thanks,
>> Rob
>>
>

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