Description
I am using an official ES docker container: docker.elastic.co/elasticsearch/elasticsearch:7.4.1
Elasticsearch version (bin/elasticsearch --version):
Version: 7.4.1, Build: default/docker/fc0eeb6e2c25915d63d871d344e3d0b45ea0ea1e/2019-10-22T17:16:35.176724Z, JVM: 13
I also tried 7.3.2 and 7.2.1, they all experience this issue.
Plugins installed: []
JVM version (java -version):
openjdk version "13" 2019-09-17
OpenJDK Runtime Environment AdoptOpenJDK (build 13+33)
OpenJDK 64-Bit Server VM AdoptOpenJDK (build 13+33, mixed mode, sharing)
OS version (uname -a if on a Unix-like system):
Linux fa18f15fe8f0 4.9.184-linuxkit #1 SMP Tue Jul 2 22:58:16 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
Description of the problem including expected versus actual behavior:
When using bulk upsert with a "painless" script, first document in a batch seems to be handled incorrectly.
Steps to reproduce:
Perform this bulk insert into an index that doesn't yet contain documents with these ids:
curl -X POST "localhost:9200/_bulk?pretty" -H 'Content-Type: application/json' -d'
{ "update" : { "_id" : "1", "_index" : "index3"} }
{ "script" : { "source": "ctx._source.counter += params.param1", "lang" : "painless", "params" : {"param1" : 2}}, "scripted_upsert": true, "upsert" : {"counter" : 1}}
{ "update" : { "_id" : "2", "_index" : "index3"} }
{ "script" : { "source": "ctx._source.counter += params.param1", "lang" : "painless", "params" : {"param1" : 2}}, "scripted_upsert": true, "upsert" : {"counter" : 1}}
'
In this example I am inserting the same thing twice, only _id value is different, so I expect two identical documents to be inserted into the ES.
Query the index:
$ curl -X GET localhost:9200/index3/_search
{
"took": 547,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 2,
"relation": "eq"
},
"max_score": 1,
"hits": [
{
"_index": "index3",
"_type": "_doc",
"_id": "1",
"_score": 1,
"_source": {
"counter": 7
}
},
{
"_index": "index3",
"_type": "_doc",
"_id": "2",
"_score": 1,
"_source": {
"counter": 3
}
}
]
}
}
Note that the counter field for the first document is incorrect and is different from the counter field value from the second document.
3 is a correct value and 7 is not a correct value according to my expectations.