multipleQueries() randomly throws "java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType"

[fmagalhaes]

Hi Algolia team,

My prod application suddenly started to randomly fail with ClassCastException when using Algolia's search client, without me releasing any app update.
I can see a big amount of events in the crash reporting tool of the prod application, but I wasn't able to reproduce the issue yet,

Stacktrace is as follows:

java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.reflect.ParameterizedType
       at com.algolia.search.endpoint.internal.EndpointMultipleIndexImpl.multipleQueries(EndpointMultipleIndex.kt:226)
       at com.algolia.search.endpoint.internal.EndpointMultipleIndexImpl$multipleQueries$1.invokeSuspend(EndpointMultipleIndex.kt:12)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
       at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:191)
       at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:147)
       at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:15)
       at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:93)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
       at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:191)
       at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:147)
       at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:15)
       at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:93)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
       at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:191)
       at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:147)
       at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:15)
       at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:93)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
       at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:191)
       at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:147)
       at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:15)
       at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:93)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
       at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:191)
       at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:147)
       at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:15)
       at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:93)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
       at io.ktor.util.pipeline.SuspendFunctionGun.resumeRootWith(SuspendFunctionGun.kt:191)
       at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:147)
       at io.ktor.util.pipeline.SuspendFunctionGun.access$loop(SuspendFunctionGun.java:15)
       at io.ktor.util.pipeline.SuspendFunctionGun$continuation$1.resumeWith(SuspendFunctionGun.kt:93)
       at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:46)
       at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
       at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
       at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)

What's the reason for having multipleQueries() throwing ClassCastException? Is this something that I can solve?

Thanks,
Francisco

[aallam]

Hello @fmagalhaes, Thank you for reporting this issue. Do you use R8 ? maybe this is related to this issue.