Merge pull request #5879 from vespa-engine/hmusum/use-thread-pool

Use a thread pool for all instances instead of one executor per instance

1 files changed, 3 insertions, 2 deletions

diff --git a/configserver/src/main/java/com/yahoo/vespa/config/server/application/ZKTenantApplications.java b/configserver/src/main/java/com/yahoo/vespa/config/server/application/ZKTenantApplications.java
index 27306289a9e..eb01e8f50f8 100644
--- a/configserver/src/main/java/com/yahoo/vespa/config/server/application/ZKTenantApplications.java
+++ b/configserver/src/main/java/com/yahoo/vespa/config/server/application/ZKTenantApplications.java
@@ -39,8 +39,9 @@ public class ZKTenantApplications implements TenantApplications, PathChildrenCac
 
     private final Curator curator;
     private final Path applicationsPath;
-    private final ExecutorService pathChildrenExecutor =
-            Executors.newFixedThreadPool(1, ThreadFactoryFactory.getThreadFactory(ZKTenantApplications.class.getName()));
+    // One thread pool for all instances of this class
+    private static final ExecutorService pathChildrenExecutor =
+            Executors.newCachedThreadPool(ThreadFactoryFactory.getThreadFactory(ZKTenantApplications.class.getName()));
     private final Curator.DirectoryCache directoryCache;
     private final ReloadHandler reloadHandler;
     private final TenantName tenant;