[GraphHopper] Cannot flush graph

[Tuan Nguyen]

Hi Peter,

My bad. My validation logic was not correct. I literally compared updated
speed value to expected speed value using equal comparator. They are always
different as the way Graphhopper processes double value.

When I provided 1.0 variance in the comparison (i.e. Math.abs(current_speed
- new_speed) > 1.0), I could confirm that the graph data actually flushed
and persisted to disc.

By the way, is the speed used in Graphhopper km/hour or mile/hour?

Kind Regards,
Tuan.

On 3 July 2015 at 01:28, Peter <graphhopper at gmx.de> wrote:

>  Hi Tuan,
>
> hmmh, good question :)
>
> Did you try the RAMDataAccess with store to true and try if this works?
> Maybe you can create a small and failing test?
>
> Regards,
> Peter
>
>
> On 02.07.2015 15:22, Tuan Nguyen wrote:
>
>    Hi,
>
>  In my project, I created a GraphHopper object with following
> initialization:
>         hopper = new GraphHopper();
>         hopper.setCHEnable(false);
>         hopper.setMemoryMapped();
>         hopper.setOSMFile(PBF_FILE);
>         hopper.setGraphHopperLocation(GRAPH_FOLDER);
>         encoder = new CarFlagEncoder();
>         hopper.setEncodingManager( new EncodingManager( encoder ) );
>         hopper.setPreciseIndexResolution(20);
>         hopper.importOrLoad();
>
>  I then used Map Matching component to find and update speed of a number
> of edges. I could confirm that this update was successful as the routing
> results before & after updating speed were different.
>
>  However, when I tried to persist the updated edges by calling
> hopper.getGraph().flush(), the new speed was not stored to disc.
>
>  MMap was used as DataAccessType so I suppose flush is enabled.
>
>  Am I missing anything here?
>
>    Kind Regards,
> Tuan.
>
>
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