Hello Jan,

yes, you are right. There is no "isSystem" attribute set in the files. But 
the backup wasn't created by v3.0.1. It is a v2.8 backup. So the attribute 
isn't set by v2.8.

Best regards
Christoph

Am Mittwoch, 6. Juli 2016 09:46:47 UTC+2 schrieb Jan:
>
> The restore process reads the backup created by arangodump and sends the 
> collection data back to the server. 
> Creating collections with names that start with an underscore (such as 
> "_aqlfunctions") is normally disallowed, except when the "isSystem" 
> attribute is set in addition).
> It seems that in 3.0 the attribute "isSystem" is not dumped by arangodump 
> when creating the backup. That's why the server rejects creating the 
> collection. 
> I fixed this in commit 00985a7cb188fd08ca63b2276026be90677ad149. The fix 
> will be included in 3.0.2.
>
> A temporary workaround until 3.0.2 is to edit the structure JSON files 
> produced by arangodump and add the "isSystem" attribute manually for 
> collections whose names start with an underscore.
>
> For example, I have got the file 
> _aqlfunctions_8293af7a2caabc3098bc21db7ce2759d.structure.json with the 
> following content:
>
>   
> {"indexes":[],"parameters":{"cid":"19492516","count":0,"deleted":false,"doCompact":true,"indexBuckets":8,"isVolatile":false,"maximalSize":1048576,"name":"_aqlfunctions","type":2,"version":5,"waitForSync":false}}
>
> changing it to the following should make the restore happy:
>
>   
> {"indexes":[],"parameters":{"cid":"19492516","count":0,"deleted":false,"doCompact":true,"indexBuckets":8,"isVolatile":false,"maximalSize":1048576,"name":"_aqlfunctions","type":2,"version":5,"waitForSync":false,"isSystem":true}}
>
> Best regards
> Jan
>
> Am Dienstag, 5. Juli 2016 14:46:56 UTC+2 schrieb Christoph Engel:
>>
>> Hi,
>>
>> I have installed Arangodb 3.0.1 and I would like to restore my backup 
>> form Arangodb 2.8 including the system collections with custom AQL 
>> functions.
>> But from arangorestore I get the following response:
>>
>> Server version: 3.0.1
>> # Connected to ArangoDB 'http+tcp://127.0.0.1:8529'
>> # Re-creating document collection '_aqlfunctions'...
>> 2016-07-05T12:29:10Z [72379] ERROR got error from server: HTTP 500 (
>> Internal Server Error): ArangoError 1208: illegal name
>> Processed 0 collection(s), read 0 byte(s) from datafiles, sent 0 batch(es
>> )
>>
>> Without the param "--include-system-collections true" arangorestore seems 
>> to work fine.
>> Is there a way to restore the system collections (especially the custom 
>> AQL functions) in Arangodb 3?
>>
>> Regards,
>> Christoph
>>
>

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