Replace ContextAndHeaders with a ThreadPool based ThreadLocal implementation

ContextAndHeaders has a massive impact on the core infrastructure since it has to
be manually passed on to all relevant places across threads/network calls etc. For the same reason
it's also very error prone and easily forgotten on potentially relevant APIs.

The new ThreadContext is associated with a ThreadPool (node or transport client) and ensures that
headers and context registered on a current thread are inherited to new threads spawned, send across
the network to be deserialized on the receiver end as well as restored on the response handling thread
once the response is received.

1 files changed, 1 insertions, 1 deletions

diff --git a/core/src/main/java/org/elasticsearch/rest/action/search/RestSearchAction.java b/core/src/main/java/org/elasticsearch/rest/action/search/RestSearchAction.java
index 6db9531af8..e58caea532 100644
--- a/core/src/main/java/org/elasticsearch/rest/action/search/RestSearchAction.java
+++ b/core/src/main/java/org/elasticsearch/rest/action/search/RestSearchAction.java
@@ -65,7 +65,7 @@ public class RestSearchAction extends BaseRestHandler {
 
     @Inject
     public RestSearchAction(Settings settings, RestController controller, Client client, IndicesQueriesRegistry queryRegistry) {
-        super(settings, controller, client);
+        super(settings, client);
         this.queryRegistry = queryRegistry;
         controller.registerHandler(GET, "/_search", this);
         controller.registerHandler(POST, "/_search", this);