Cottontail DB 0.16.0 crashes due invalid default config

[x4e-jonas]

The newly released 0.16.0 does not work as expected:

$  docker run --rm vitrivr/cottontaildb:0.16.0
Could not load Cottontail DB configuration file under /cottontaildb-config/config.json. Cottontail DB will shutdown!
kotlinx.serialization.json.internal.JsonDecodingException: Unexpected JSON token at offset 77: Encountered an unknown key 'probability' at path: $.statistics.threshold
Use 'ignoreUnknownKeys = true' in 'Json {}' builder to ignore unknown keys.
JSON input: {
  "root": "./cottontaildb",
  "statistics" : {
    "threshold" : 1.0,
    "probability" : 0.5,
    "randomGeneratorName": "L32X64MixRandom"
  }
}
	at kotlinx.serialization.json.internal.JsonExceptionsKt.JsonDecodingException(JsonExceptions.kt:24)
	at kotlinx.serialization.json.internal.JsonExceptionsKt.JsonDecodingException(JsonExceptions.kt:32)
	at kotlinx.serialization.json.internal.AbstractJsonLexer.fail(AbstractJsonLexer.kt:598)
	at kotlinx.serialization.json.internal.AbstractJsonLexer.failOnUnknownKey(AbstractJsonLexer.kt:593)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.handleUnknown(StreamingJsonDecoder.kt:257)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeObjectIndex(StreamingJsonDecoder.kt:243)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeElementIndex(StreamingJsonDecoder.kt:178)
	at org.vitrivr.cottontail.config.StatisticsConfig$$serializer.deserialize(StatisticsConfig.kt:12)
	at org.vitrivr.cottontail.config.StatisticsConfig$$serializer.deserialize(StatisticsConfig.kt:12)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:69)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableValue(AbstractDecoder.kt:43)
	at kotlinx.serialization.encoding.AbstractDecoder.decodeSerializableElement(AbstractDecoder.kt:70)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableElement(StreamingJsonDecoder.kt:168)
	at org.vitrivr.cottontail.config.Config$$serializer.deserialize(Config.kt:15)
	at org.vitrivr.cottontail.config.Config$$serializer.deserialize(Config.kt:15)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:69)
	at kotlinx.serialization.json.Json.decodeFromString(Json.kt:107)
	at org.vitrivr.cottontail.CottontailKt.loadConfig(Cottontail.kt:115)
	at org.vitrivr.cottontail.CottontailKt.main(Cottontail.kt:38)

Mounting the previous config doesn't work either:

$ docker run --rm --volume /my/config.json:/cottontaildb-config/config.json:ro,z vitrivr/cottontaildb:0.16.0
Could not load Cottontail DB configuration file under /cottontaildb-config/config.json. Cottontail DB will shutdown!
kotlinx.serialization.json.internal.JsonDecodingException: Unexpected JSON token at offset 38: Encountered an unknown key 'mapdb' at path: $.root
Use 'ignoreUnknownKeys = true' in 'Json {}' builder to ignore unknown keys.
JSON input: {
  "root": "./cottontaildb-data",
  "mapdb": {
    "enableMmap": true,
    "forceUnmap": true,
    "pageShift": 22
  }
}

	at kotlinx.serialization.json.internal.JsonExceptionsKt.JsonDecodingException(JsonExceptions.kt:24)
	at kotlinx.serialization.json.internal.JsonExceptionsKt.JsonDecodingException(JsonExceptions.kt:32)
	at kotlinx.serialization.json.internal.AbstractJsonLexer.fail(AbstractJsonLexer.kt:598)
	at kotlinx.serialization.json.internal.AbstractJsonLexer.failOnUnknownKey(AbstractJsonLexer.kt:593)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.handleUnknown(StreamingJsonDecoder.kt:257)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeObjectIndex(StreamingJsonDecoder.kt:243)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeElementIndex(StreamingJsonDecoder.kt:178)
	at org.vitrivr.cottontail.config.Config$$serializer.deserialize(Config.kt:15)
	at org.vitrivr.cottontail.config.Config$$serializer.deserialize(Config.kt:15)
	at kotlinx.serialization.json.internal.StreamingJsonDecoder.decodeSerializableValue(StreamingJsonDecoder.kt:69)
	at kotlinx.serialization.json.Json.decodeFromString(Json.kt:107)
	at org.vitrivr.cottontail.CottontailKt.loadConfig(Cottontail.kt:115)
	at org.vitrivr.cottontail.CottontailKt.main(Cottontail.kt:38)

There are no upgrade instructions or hints in the release notes about any breaking changes.

[ppanopticon]

Ohhh! I'll adjust the config.

However, the entire release is a breaking change. So I would refrain from upgrading for now, unless you start a fresh build or know exactly, what you do.