java - Google Datastore, backend error 503 when doing simple querying -


i using java call google cloud perform simple query. error:

com.google.api.services.datastore.client.datastoreexception: backend error     @ com.google.api.services.datastore.client.remoterpc.makeexception(remoterpc.java:115)     @ com.google.api.services.datastore.client.remoterpc.call(remoterpc.java:81)     @ com.google.api.services.datastore.client.basedatastorefactory$remoterpc.call(basedatastorefactory.java:41)     @ com.google.api.services.datastore.client.datastore.runquery(datastore.java:109)     @ com.test.mycode.main(mycode.java:538) caused by: com.google.api.client.http.httpresponseexception: 503 service unavailable

the request made simple. comes done 1 in query format:

 query {   kind {     name: "thedata"   }   filter {     property_filter {       property {         name: "mykey"       }       operator: equal       value {         string_value: "somevalue"       }     }   }   }

just 2 questions: - setup wrong of environment? - syntax of query incorrect? should read "kinds" instead of "kind"?


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