Parse.com background job fail the service is currently unavailable - parse-platform

Question

I am using Cloud Code to update all users, everyday. It used to work, but now getting error after 5 minute processing. "the service is currently unavailable" without any reason. I have checked status.parse.com and there is no relevant down. I have 10 000 users.
Parse.Cloud.job("makeUsersPassiveAndSendPushes", function(request, status) {
Parse.Cloud.useMasterKey();
var activeUsers = [];
var limitDoneUsers = [];
var nowDate=new Date();
var updatedUsers = [];
var query = new Parse.Query(Parse.User);
query.equalTo("passive",false);
query.each(function(user) {
if(user.get("passive") === false){
activeUsers.push(user);
user.set("passive", true);
user.set("passiveDate",nowDate);
}
if(user.get("isLimitDone")){
limitDoneUsers.push(user);
}
user.set("isLimitDone",false);
user.set("activeMatch",null);
user.set("canGetMatch",true);
user.set("dailyMatchEndCount",0);
//user.set("lastMatchLimit",false);
user.set("todaysMatches",[]);
updatedUsers.push(user);
return user.save();
})
Could you help me? Thanks.

Answer 1

You may want to try modifying the last line from:
return user.save();
to use callbacks for the save function, to ensure they are firing in sequence:
return user.save(null, {
success: function (user) {
return user;
},
error: function (error) {
return Parse.Promise.error(new Error("error"));
}
});
Another alternative would be to use the saveAll function like this:
return Parse.Object.saveAll(updatedUsers).then(function() {
//code that fires after all objects are saved
});
Also, are you using the hosted Parse.com environment or have you transitioned to another provider like Heroku & mLab?
As a fellow Parse user with this same issue (background job failing with this error when performing many inserts), I look forward to any comments you may have.