somu-imply opened a new pull request, #15972:
URL: https://github.com/apache/druid/pull/15972
I have been able to replicate this case in MSQ insert only, trying to add a
test case. But overall the issue is this. When data is ingested using the
following
```
insert into mytest
select
time_parse("time") as __time,
cityName
from table(
extern(
'{"type": "s3", "prefixes":
["s3://imply-eng-datasets/qa/IngestionTest/wikipedia/files/wikiticker-2015-09-12-sampled.json.gz"]}',
'{"type": "json"}',
'[{"name": "time", "type": "string"}, {"name": "channel", "type":
"string"}, {"name": "cityName", "type": "string"}, {"name": "comment", "type":
"string"}, {"name": "countryIsoCode", "type": "string"}, {"name":
"countryName", "type": "string"}, {"name": "isAnonymous", "type": "string"},
{"name": "isMinor", "type": "string"}, {"name": "isNew", "type": "string"},
{"name": "isRobot", "type": "string"}, {"name": "isUnpatrolled", "type":
"string"}, {"name": "metroCode", "type": "string"}, {"name": "namespace",
"type": "string"}, {"name": "page", "type": "string"}, {"name":
"regionIsoCode", "type": "string"}, {"name": "regionName", "type": "string"},
{"name": "user", "type": "string"}, {"name": "delta", "type": "long"}, {"name":
"added", "type": "long"}, {"name": "deleted", "type": "long"}]'
)
)
where countryName in ('Japan')
partitioned by YEAR
clustered by __time
insert into mytest
select
time_parse("time") as __time,
added
from table(
extern(
'{"type": "s3", "prefixes":
["s3://imply-eng-datasets/qa/IngestionTest/wikipedia/files/wikiticker-2015-09-12-sampled.json.gz"]}',
'{"type": "json"}',
'[{"name": "time", "type": "string"}, {"name": "channel", "type":
"string"}, {"name": "cityName", "type": "string"}, {"name": "comment", "type":
"string"}, {"name": "countryIsoCode", "type": "string"}, {"name":
"countryName", "type": "string"}, {"name": "isAnonymous", "type": "string"},
{"name": "isMinor", "type": "string"}, {"name": "isNew", "type": "string"},
{"name": "isRobot", "type": "string"}, {"name": "isUnpatrolled", "type":
"string"}, {"name": "metroCode", "type": "string"}, {"name": "namespace",
"type": "string"}, {"name": "page", "type": "string"}, {"name":
"regionIsoCode", "type": "string"}, {"name": "regionName", "type": "string"},
{"name": "user", "type": "string"}, {"name": "delta", "type": "long"}, {"name":
"added", "type": "long"}, {"name": "deleted", "type": "long"}]'
)
)
where countryName in ('Japan')
partitioned by YEAR
clustered by __time
```
Running a query like this below would throw an NPE.
```
select earliest(added) from mytest
Error: RUNTIME_FAILURE (OPERATOR)
Cannot read field "lhs" because "inPair" is null
java.lang.NullPointerException
```
We missed a null check in numeric earliest and latest aggs. After adding it
back, these test cases pass
This PR has:
- [ ] been self-reviewed.
- [ ] using the [concurrency
checklist](https://github.com/apache/druid/blob/master/dev/code-review/concurrency.md)
(Remove this item if the PR doesn't have any relation to concurrency.)
- [ ] added documentation for new or modified features or behaviors.
- [ ] a release note entry in the PR description.
- [ ] added Javadocs for most classes and all non-trivial methods. Linked
related entities via Javadoc links.
- [ ] added or updated version, license, or notice information in
[licenses.yaml](https://github.com/apache/druid/blob/master/dev/license.md)
- [ ] added comments explaining the "why" and the intent of the code
wherever would not be obvious for an unfamiliar reader.
- [ ] added unit tests or modified existing tests to cover new code paths,
ensuring the threshold for [code
coverage](https://github.com/apache/druid/blob/master/dev/code-review/code-coverage.md)
is met.
- [ ] added integration tests.
- [ ] been tested in a test Druid cluster.
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