Stable app using Fusion Tables suddenly getting 503 server error -

since 14 hours ago users have started reporting problems not able save data in google fusion tables using app.

i have used fusion tables in android app number of years , typically generate around 2,000 fusion table requests daily. inside quota (and checked morning make sure not generating on usage issues).

as of last night receiving problem reports users indicates cannot save data. authentication , reading of existing tables working fine.

running app under debug seeing 503 error server when app tries post data fusion table. actual exception appears follows (i've edited specific table , access token):

java.io.filenotfoundexception: https://www.googleapis.com/upload/fusiontables/v1/tables/xxxxxx/import?access_token=xxxxxxx

the app trying post csv data. here sample request body:

0,"931 ne linden ave 97030","gresham, or 97030","-122.4238587,45.5041952,0" 1,"1941 southeast paloma drive, gresham, or 97080, usa","1941 southeast paloma drive, gresham, or 97080, usa, null","-122.392526,45.48251,0" 2,"21801-21823 northeast halsey street, fairview, or 97024, usa","21801-21823 northeast halsey street, fairview, or 97024, usa, null","-122.4381921,45.5343266,0"

as app has been working absolutely fine months (and i've not made changes fusion table code @ least year) i'm assuming fusion tables team rolled out change last night can't find notification going happen.

did miss something?

one of internal services use had spate of errors related uploading around time had problem. we're looking cause, @ moment appears ok.