[OSM-talk] Create extra Planet files for syncing

[Brett Henderson]

I never got around to checking out what happened to the diffs during 
that period, apologies.  Are you sure that there's a gap in data?  It 
isn't a huge amount of effort to re-generate a daily file, that can be 
generated at any time.

I'm not sure how simple it is for you to utilise, but the hourly (and 
minute) diffs will provide a continuous stream of diffs even during 
outages.  It would be possible to apply those as a workaround.

Another option is for me to update the daily diff generator to use the 
same code as the hourly and minute diffs.  The two issues with this 
approach are that:
1. I will have to switch to gzip format due to java bzip2 performance 
issues.
2. It will lock the MySQL history tables for a longer period.

Frederik Ramm wrote:
> Hi,
>
>   
>> The coastline checker won't see anything after the 19th because the
>> daily diff for that day is missing. Either the diff will appear or it
>> will resync on the next planet dump.
>>     
>
> That's a problem I am having (for the Geofabrik Excerpts) as well - once 
> a daily diff has failed, I'm stuck for the rest of the week. Actually 
> this time I simply applied the new diffs anyway, ignoring possible 
> consistency problems, but it's not the best thing.
>
> Would it be possible to issue "extra" planet dumps after events that 
> disrupt the diff chain, like we had last week? So that those who rely on 
> diffs for a current version of the data have a clean start to work on, 
> without having to wait for the next regular planet?
>
> What does OSMXAPI do in cases like these?
>
> Bye
> Frederik
>
>
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