fix(csharp/src/Telemetry/Traces/Listeners/FileListener): ensure to flush to file on each line (#4175)

birschick-bq · web-flow · commit b7345f0ac473 · 2026-04-02T16:03:51.000-07:00
Corrects a bug where the file was not flush, as intended, for each line.
diff --git a/csharp/src/Telemetry/Traces/Listeners/FileListener/TracingFile.cs b/csharp/src/Telemetry/Traces/Listeners/FileListener/TracingFile.cs
@@ -127,7 +127,7 @@ private async Task WriteSingleLineAsync(Stream stream)
             }
             await stream.CopyToAsync(_currentFileStream).ConfigureAwait(false);
             // Flush for robustness to crashing
-            await stream.FlushAsync().ConfigureAwait(false);
+            await _currentFileStream.FlushAsync().ConfigureAwait(false);
         }
 
         private async Task OpenNewTracingFileAsync()

Original file line number	Diff line number	Diff line change
`@@ -127,7 +127,7 @@ private async Task WriteSingleLineAsync(Stream stream)`
`127`	`127`	`}`
`128`	`128`	`await stream.CopyToAsync(_currentFileStream).ConfigureAwait(false);`
`129`	`129`	`// Flush for robustness to crashing`
`130`		`- await stream.FlushAsync().ConfigureAwait(false);`
	`130`	`+ await _currentFileStream.FlushAsync().ConfigureAwait(false);`
`131`	`131`	`}`
`132`	`132`
`133`	`133`	`private async Task OpenNewTracingFileAsync()`