$export-poll-status not working in Hapi 8.6.5

[Johanna Häusler]

Hello,

I have a long running batch2 job and need to check the status of it from outside of hapi, so I can not access the DB directly.

On my server (based on hapifhir starter) partitioning is not enabled (double checked that in the logs: 2026-05-08T05:22:30.984842986Z 2026-05-08 05:22:30.984 [main] INFO  c.u.f.j.s.c.FhirServerConfigCommon [FhirServerConfigCommon.java:350] Partitioning is not enabled on this server).

If I try to perform the $export-poll-status operation, in Hapi a mapping exception is thrown:

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "partitionedUrl" (class ca.uhn.fhir.rest.api.server.bulk.BulkExportJobParameters), not marked as ignorable (17 known properties: "partitionId", "binarySecurityContextIdentifierSystem", "resourceTypes", "includeHistory", "exportId", "originalRequestUrl", "patientIds", "userData", "postFetchFilterUrls", "outputFormat", "since", "filters", "expandMdm", "exportStyle", "until", "groupId", "binarySecurityContextIdentifierValue"])
2026-05-07T14:41:09.980093973Z  at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 20] (through reference chain: ca.uhn.fhir.rest.api.server.bulk.BulkExportJobParameters["partitionedUrl"])
2026-05-07T14:41:09.980096457Z   at ca.uhn.fhir.util.JsonUtil.deserialize(JsonUtil.java:92)
2026-05-07T14:41:09.980099041Z   at ca.uhn.fhir.batch2.model.JobInstance.getParameters(JobInstance.java:189)
2026-05-07T14:41:09.980101327Z   at ca.uhn.fhir.batch2.jobs.export.BulkDataExportProvider.exportPollStatus(BulkDataExportProvider.java:443)
2026-05-07T14:41:09.980127264Z   at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
2026-05-07T14:41:09.980130742Z   at java.base/java.lang.reflect.Method.invoke(Method.java:580)

[...]

This behavior is reproducible on the hapifhir server as well: https://hapi.fhir.org/baseR4/swagger-ui/#/System%20Level%20Operations/post__export_poll_status. I tested it with a simple $reindex job and the response of the http request looks like this (feel free to test yourself with this jobId: "203459b6-355e-4f1e-bf6f-13174c02dc26":

{ "resourceType": "OperationOutcome", "text": { "status": "generated", "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\"><h1>Operation Outcome</h1><table border=\"0\"><tr><td style=\"font-weight: bold;\">ERROR</td><td>[]</td><td>HAPI-2060: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field &quot;partitionedUrl&quot; (class ca.uhn.fhir.rest.api.server.bulk.BulkExportJobParameters), not marked as ignorable (17 known properties: &quot;partitionId&quot;, &quot;binarySecurityContextIdentifierSystem&quot;, &quot;resourceTypes&quot;, &quot;includeHistory&quot;, &quot;exportId&quot;, &quot;originalRequestUrl&quot;, &quot;patientIds&quot;, &quot;userData&quot;, &quot;postFetchFilterUrls&quot;, &quot;outputFormat&quot;, &quot;since&quot;, &quot;filters&quot;, &quot;expandMdm&quot;, &quot;exportStyle&quot;, &quot;until&quot;, &quot;groupId&quot;, &quot;binarySecurityContextIdentifierValue&quot;]) at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 20] (through reference chain: ca.uhn.fhir.rest.api.server.bulk.BulkExportJobParameters[&quot;partitionedUrl&quot;])</td></tr></table></div>" }, "issue": [ { "severity": "error", "code": "processing", "diagnostics": "HAPI-2060: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field \"partitionedUrl\" (class ca.uhn.fhir.rest.api.server.bulk.BulkExportJobParameters), not marked as ignorable (17 known properties: \"partitionId\", \"binarySecurityContextIdentifierSystem\", \"resourceTypes\", \"includeHistory\", \"exportId\", \"originalRequestUrl\", \"patientIds\", \"userData\", \"postFetchFilterUrls\", \"outputFormat\", \"since\", \"filters\", \"expandMdm\", \"exportStyle\", \"until\", \"groupId\", \"binarySecurityContextIdentifierValue\"])\n at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 20] (through reference chain: ca.uhn.fhir.rest.api.server.bulk.BulkExportJobParameters[\"partitionedUrl\"])" } ] }

Can someone please give advice if that is a real bug in hapi or if there is another configuration that would control the existence of the "partitionedUrl" that causes the mapping to fail?

Thanks and kind regards,

Johanna