unset slice occur

[EdwardShen125]

Mistakes happened when i migrates docs from one table to another.
source doc like {"A":[], "B":"name"}
result doc like {"B":"name"}
that A field was unset
when param "a" of func "normalizeDocSlice" was a zero length slice that not nil pointer. So the returned var "avs" was a nil.

i guess var avs = make([]interface{}, 0) may solve my problem

[rwynn]

I'm not sure there is a difference in Elasticsearch between an empty array and a missing field.

https://www.elastic.co/guide/en/elasticsearch/reference/current/array.html

An array may contain null values, which are either replaced by the configured null_value or skipped entirely. An empty array [] is treated as a missing field — a field with no values.

I could be wrong though.

[rwynn]

Sorry, disregard my last comment. I thought this issue was in a different repository.

I just pushed a fix for this and will create a new release for it.

[EdwardShen125]

Sorry, disregard my last comment. I thought this issue was in a different repository.

I just pushed a fix for this and will create a new release for it.

that's great!