{
  "GeneratedUtc": "2026-05-02T22:53:41Z",
  "Scenario": "native integrated history read",
  "Sanitized": true,
  "InstrumentedMethods": {
    "HistorianClient.OpenConnection": "0x060055D8",
    "Query.StartDataQuery": "0x0600574B",
    "CRetrievalConnectionWCF.StartQuery2": "0x06004A0D",
    "CRetrievalConnectionWCF.GetNextQueryResultBuffer2": "0x06004A0E",
    "HistorianClient.GetNextRow<DataQueryResultRow>": "0x0600588D"
  },
  "ObservedValues": {
    "HistorianClientOpenConnectionSuccess": 1,
    "HistorianClientOpenConnectionHandle": 2,
    "StartDataQueryClientHandleCandidate": 2,
    "StartDataQueryRequestLength": 251,
    "StartDataQueryRequestSha256": "96e520349e06a5cfab6099f86c6304aac22f4f3e46dba282a859ff0a640b2608",
    "WcfStartQuery2Success": 1,
    "WcfStartQuery2ClientHandle": "<transient-redacted>",
    "WcfStartQuery2QueryRequestType": 1,
    "WcfStartQuery2RequestSize": 251,
    "WcfStartQuery2ResponseSize": 31,
    "WcfStartQuery2ResponseSha256": "4c062b5ce8181308f0f46bfd8c6088acb52e6ade94401651b7d3ccc8952edfb5",
    "WcfStartQuery2ServerQueryHandle": "<transient-redacted>",
    "WcfStartQuery2ErrorSize": 0,
    "WcfGetNextQueryResultBuffer2Success": 1,
    "WcfGetNextQueryResultBuffer2UsesSameWcfClientHandle": true,
    "WcfGetNextQueryResultBuffer2UsesSameServerQueryHandle": true,
    "WcfGetNextQueryResultBuffer2ResultSize": 570,
    "WcfGetNextQueryResultBuffer2ResultSha256": "cc9dc2078ea0b5d5aabf2940bebe11700117a4c1e2583bfdeb033af7ddbe459d",
    "WcfGetNextQueryResultBuffer2TerminalBufferSize": 5,
    "WcfGetNextQueryResultBuffer2TerminalBufferSha256": "7db15e1972ced8a44dae4d75f7a1f0cd74858c7d0deb8b3522d6a05904778bf7",
    "GetNextRowClientQueryHandle": 1,
    "GetNextRowDataQueryResultRowLength": 512,
    "GetNextRowDataQueryResultRowSha256": "acc37153a017c99960bf84f61d003760b7a1749c4c94c1c6fc31871403fcaf71"
  },
  "Conclusion": "Query.StartDataQuery passes the legacy native client handle 2 into the common retrieval layer. The successful WCF StartQuery2 call uses a different transient retrieval session handle, so direct managed read replay must reproduce the session/client mapping below the native ClientApp handle, not just the 251-byte DataQueryRequest."
}