For Larger DB of 300 GB for MongoDB->Postgres connection the Test the Source(mongo) retuns 500 error

[eknazaradv-alt]

Hi all,

I have created the mongoDB source and point to mongoDB connection string /Self manafed and when I am trying to Test the source I am getting below error. Need help

2026-02-23 05:01:34,461 [main] ERROR i.a.a.c.c.ClientConfigurationSupport(generateDefaultRetryPolicy$lambda$3):63 - Failed to call unknown. Last response: null
java.io.IOException: HTTP error: 500 Internal Server Error
at io.airbyte.api.client.interceptor.ThrowOn5xxInterceptor.intercept(ThrowOn5xxInterceptor.kt:16)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:2
at dev.failsafe.okhttp.FailsafeCall.execute(FailsafeCall.java:121)
at io.airbyte.api.client.generated.WorkloadOutputApi.writeWorkloadOutputWithHttpInfo(WorkloadOutputApi.kt:376)
at io.airbyte.api.client.generated.WorkloadOutputApi.writeWorkloadOutput(WorkloadOutputApi.kt:62)
at io.airbyte.workers.workload.WorkloadOutputWriter.writeOutputThroughServer(WorkloadOutputWriter.kt:82)
at io.airbyte.workers.workload.WorkloadOutputWriter.write(WorkloadOutputWriter.kt:65)
at io.airbyte.connectorSidecar.ConnectorWatcher.handleException(ConnectorWatcher.kt:207)
at io.airbyte.connectorSidecar.ConnectorWatcher.run(ConnectorWatcher.kt:83)
at io.airbyte.connectorSidecar.ApplicationKt.main(Application.kt:22)
at io.airbyte.connectorSidecar.ApplicationKt.main(Application.kt)

2026-02-23 05:01:34,461 [main] INFO i.a.c.ConnectorWatcher(failWorkload):342 - Failing workload b254713cd-cc36-4c0a-b5bd-b47cb8a0561e_ea6bc95a-f872-4fe2-b14a-cb863ca92670_0_check.
2026-02-23 05:01:38,540 [main] INFO i.a.c.ConnectorWatcher(exitInternalError):254 - Deliberately exiting process with code 1.

[eknazaradv-alt]

Airbyte version - 2.0.1