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The following commit(s) were added to refs/heads/main by this push:
     new 14412f0ca1 NIFI-15269 Removed concurrency limit in ConsumeKinesis HTTP 
client (#10575)
14412f0ca1 is described below

commit 14412f0ca14e77a33a09659a32fcc8e3f4e07e60
Author: Alaksiej Ščarbaty <[email protected]>
AuthorDate: Mon Dec 1 14:41:55 2025 +0100

    NIFI-15269 Removed concurrency limit in ConsumeKinesis HTTP client (#10575)
    
    Signed-off-by: David Handermann <[email protected]>
---
 .../org/apache/nifi/processors/aws/kinesis/ConsumeKinesis.java | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git 
a/nifi-extension-bundles/nifi-aws-bundle/nifi-aws-kinesis/src/main/java/org/apache/nifi/processors/aws/kinesis/ConsumeKinesis.java
 
b/nifi-extension-bundles/nifi-aws-bundle/nifi-aws-kinesis/src/main/java/org/apache/nifi/processors/aws/kinesis/ConsumeKinesis.java
index 3ac4443eb2..b173cfab46 100644
--- 
a/nifi-extension-bundles/nifi-aws-bundle/nifi-aws-kinesis/src/main/java/org/apache/nifi/processors/aws/kinesis/ConsumeKinesis.java
+++ 
b/nifi-extension-bundles/nifi-aws-bundle/nifi-aws-kinesis/src/main/java/org/apache/nifi/processors/aws/kinesis/ConsumeKinesis.java
@@ -160,10 +160,6 @@ public class ConsumeKinesis extends AbstractProcessor {
     private static final Duration HTTP_CLIENTS_CONNECTION_TIMEOUT = 
Duration.ofSeconds(30);
     private static final Duration HTTP_CLIENTS_READ_TIMEOUT = 
Duration.ofMinutes(3);
 
-    /**
-     * Best balance between throughput and CPU usage by KCL.
-     */
-    private static final int KINESIS_HTTP_CLIENT_CONCURRENCY_PER_TASK = 16;
     private static final int KINESIS_HTTP_CLIENT_WINDOW_SIZE_BYTES = 512 * 
1024; // 512 KiB
     private static final Duration KINESIS_HTTP_HEALTH_CHECK_PERIOD = 
Duration.ofMinutes(1);
 
@@ -455,11 +451,11 @@ public class ConsumeKinesis extends AbstractProcessor {
      * {@link 
software.amazon.kinesis.common.KinesisClientUtil#adjustKinesisClientBuilder(KinesisAsyncClientBuilder)}.
      */
     private static SdkAsyncHttpClient createKinesisHttpClient(final 
ProcessContext context) {
-        final int maxConcurrency = KINESIS_HTTP_CLIENT_CONCURRENCY_PER_TASK * 
context.getMaxConcurrentTasks();
-
         return createHttpClientBuilder(context)
                 .protocol(Protocol.HTTP2)
-                .maxConcurrency(maxConcurrency)
+                // Since we're using HTTP/2, multiple concurrent requests will 
reuse the same HTTP connection.
+                // Therefore, the number of real connections is going to be 
relatively small.
+                .maxConcurrency(Integer.MAX_VALUE)
                 .http2Configuration(Http2Configuration.builder()
                         
.initialWindowSize(KINESIS_HTTP_CLIENT_WINDOW_SIZE_BYTES)
                         
.healthCheckPingPeriod(KINESIS_HTTP_HEALTH_CHECK_PERIOD)

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