Hi,

mvrbtree was created for local storage and uses cache based on Java heap,
so all operations with heap is out of control of WAL (they are not
recorded).
That is reason of incompatibility.

New data structure is disk cache based (uses direct memory), so no OOM
(disk will be used in such case) no  GC overhead, and all operations are
logged.

Other question, the version 1.7 can use directly a DB created by the 1.6.x ?


Not graph database, we will provide migration tool next week, possible
option is export/import  to/from GraphML format.





On Wed, Feb 5, 2014 at 8:05 PM, Laurent Quérel <[email protected]>wrote:

> Other question, the version 1.7 can use directly a DB created by the 1.6.x
> ?
>
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-- 
Best regards,
Andrey Lomakin.

Orient Technologies
the Company behind OrientDB

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