when sum(a * b) return 0

[leeqianjun]

based on the opendistroFor es,

when run the function select sum(a * b) from T1
the result is 0

[Frances-zy]

the same problem! the explain is

"total" : {
"sum" : {
"script" : {
"source" : "def multiply_1 = doc['a'].value * doc['b'].value",
"lang" : "painless"
}
}
}