[applied] on update map missing

[ekle]

hi,
the following works with 39654eb.
But after d3c6bee it does not work anymore.

package main

import (
        "log"

        "github.com/gocql/gocql"
)

func main() {
        cluster := gocql.NewCluster("127.0.0.1")
        cluster.Keyspace = "test"
        cluster.Consistency = gocql.Quorum
        cluster.ProtoVersion = 3
        cluster.RetryPolicy = &gocql.SimpleRetryPolicy{NumRetries: 3}
        cluster.Discovery = gocql.DiscoveryConfig{}
        session, err := cluster.CreateSession()
        if err != nil {
                panic(err)
        }
        err = session.Query("CREATE TABLE test.test (k text, v text, PRIMARY KEY(k));").Exec()
        if err != nil {
                log.Print(err.Error())
        }
        err = session.Query("INSERT INTO test.test (k) VALUES ('a')").Exec()
        if err != nil {
                panic(err)
        }
        iter := session.Query("UPDATE test.test USING TTL 1 SET v = 'new' WHERE k = 'a' IF v = ? ", nil).Iter()
        var raw = make(map[string]interface{})                                                     

        for iter.MapScan(raw) {                                                        
                log.Print(raw)                                                         
                if _, found := raw["[applied]"]; found {
                        log.Print("OK")
                        return
                }      
        }              
        log.Print("BUG")
} 

[Zariel]

You should use MapScanCAS to do the CAS operation

[Zariel]

This is because for some reason when preparing a CAS statement Cassandra does not include the applied column, but when you execute the query it is included in the response metadata, which we skip for non-cas operations. Im not sure if this is a bug in Cassandra or not.

[Zariel]

@ekle call NoSkipMetadata on the query will fix this.