Change

Author: Tim-Brooks

docs/reference/elasticsearch/configuration-reference/thread-pool-settings.md

@@ -71,6 +71,9 @@ $$$search-throttled$$$`search_throttled`
 `system_write`
 :   For write operations on system indices. Thread pool type is `fixed` with a default maximum size of `min(5, (`[`# of allocated processors`](#node.processors)`) / 2)`.
 
+`system_write_coordination`
+:   For bulk request coordination operations on system indices. Thread pool type is `fixed` with a default maximum size of `min(5, (`[`# of allocated processors`](#node.processors)`) / 2)`.
+
 `system_critical_read`
 :   For critical read operations on system indices. Thread pool type is `fixed` with a default maximum size of `min(5, (`[`# of allocated processors`](#node.processors)`) / 2)`.
 

server/src/main/java/org/elasticsearch/threadpool/DefaultBuiltInExecutorBuilders.java

@@ -206,7 +206,7 @@ public Map<String, ExecutorBuilder> getBuilders(Settings settings, int allocated
                 ThreadPool.Names.SYSTEM_WRITE_COORDINATION,
                 halfProcMaxAt5,
                 1000,
-                new EsExecutors.TaskTrackingConfig(true, indexAutoscalingEWMA),
+                EsExecutors.TaskTrackingConfig.DO_NOT_TRACK,
                 true
             )
         );