diff --git a/src/controllers/opentelemetry.ts b/src/controllers/opentelemetry.ts
index 557a5c0..d3e579c 100644
--- a/src/controllers/opentelemetry.ts
+++ b/src/controllers/opentelemetry.ts
@@ -1,5 +1,5 @@
 import { NodeSDK } from "@opentelemetry/sdk-node";
-import { BatchSpanProcessor } from "@opentelemetry/sdk-trace-node";
+import { SimpleSpanProcessor } from "@opentelemetry/sdk-trace-node";
 import { HttpInstrumentation } from "@opentelemetry/instrumentation-http";
 import { ExpressInstrumentation } from "@opentelemetry/instrumentation-express";
 import { Resource } from "@opentelemetry/resources";
@@ -15,7 +15,7 @@ const jaegerResName = process.env.JAEGER_RES_NAME ?? '/v1/traces';
 const traceExporter = new OTLPTraceExporter({
   url: `http://${jaegerHost}:${jaegerPort}${jaegerResName}`
 });
-const spanProcessor = new BatchSpanProcessor(traceExporter);
+const spanProcessor = new SimpleSpanProcessor(traceExporter);
 
 debug("Initializing Opentelemetry instrumentation...");
 const sdk = new NodeSDK({
diff --git a/src/controllers/threading/taskHandler.ts b/src/controllers/threading/taskHandler.ts
index b22ae41..586adf7 100644
--- a/src/controllers/threading/taskHandler.ts
+++ b/src/controllers/threading/taskHandler.ts
@@ -17,7 +17,6 @@ import { ProfilingIntegration } from "@sentry/profiling-node";
 import { Span, trace, context, propagation, Context, Tracer } from "@opentelemetry/api";
 import { Telemetry } from "@biothings-explorer/utils";
 import { InnerTaskData } from "@biothings-explorer/types";
-import { flushRemainingSpans } from "../opentelemetry";
 
 // use SENTRY_DSN environment variable
 try {
@@ -114,7 +113,7 @@ async function runTask({
     transaction.finish();
     span.end();
     Telemetry.removeOtelSpan();
-    await flushRemainingSpans();
+    // await flushRemainingSpans();  // only needed with BatchSpanProcessor
   } catch (error) {
     debug("Sentry/OpenTelemetry transaction finish error. This does not affect execution.");
     debug(error);