How frequently does the bug occur?

Always

Description

During our migration from Realm Java to Realm Kotlin in our Android project, a severe performance drop in some of our queries was observed.

For reference, we have a Realm Object with the following schema:

class BookRealm {
   @PrimaryKey var idRealm: String = EMPTY_STRING,
    var metas: RealmList<MetadataRealm> = realmListOf(),
}

The MetadataRealm is has the following schema:

class MetadataRealm(
    var key: String = EMPTY_STRING,
    var values: RealmList<String?> = realmListOf()
) : EmbeddedRealmObject

For our test, we have 100 BookRealm objects. On average, each one of them has 10 MetadataRealm, which all have a single object in {{values }}.

Fetching all BookRealm objects and accessing their metas objects is on average, 5 times slower in Kotlin.

Stacktrace & log output

No response

Can you reproduce the bug?

Always

Reproduction Steps

No response

Version

1.10.0

What Atlas App Services are you using?

Local Database only

Are you using encryption?

Yes

Platform OS and version(s)

Android 13

Build environment

No response