Hey folks, question: is

ListFilteredDimensionSpec

not allowed to have

null

as an element in its

values

array? Or is this a bug? Example:

{
  "dimensions": [
    {
      "type": "listFiltered",
      "delegate": "based_on",
      "values": [
        null,
        "A",
        "B"
      ]
    }
  ],
  "aggregations": [
    {
      "type": "doubleSum",
      "fieldName": "value",
      "name": "value"
    }
  ],
  "intervals": [
    "2025-01-01T00:00:00.000Z/2025-07-10T23:59:59.999Z"
  ],
  "queryType": "groupBy",
  "granularity": "all",
  "dataSource": "datasource_A"
}

will fail with

Error: RUNTIME_FAILURE (OPERATOR)

Cannot invoke "String.getBytes(String)" because "string" is null

java.lang.NullPointerException

The line in question is this. Passing in empty string in-place of the

NULL

returns null values, so this is a partial work-around for now.

Seems like two bugs to me

https://apachedruidworkspace.slack.com/archives/C030CMF6B70/p1754124813093109?thread_ts=1752544383.559259&channel=C030CMF6B70&message_ts=1754124813.093109 Yes

Hmm. The NPE is in

getCacheKey

, that seems like an oversight that should be easy to fix by switching it to using

CacheKeyBuilder