id file is needed when standaloneEnabled=false

2 files changed, 5 insertions, 5 deletions

diff --git a/zookeeper-server/zookeeper-server-common/src/main/java/com/yahoo/vespa/zookeeper/Configurator.java b/zookeeper-server/zookeeper-server-common/src/main/java/com/yahoo/vespa/zookeeper/Configurator.java
index d92b80b5b81..7424b1750c4 100644
--- a/zookeeper-server/zookeeper-server-common/src/main/java/com/yahoo/vespa/zookeeper/Configurator.java
+++ b/zookeeper-server/zookeeper-server-common/src/main/java/com/yahoo/vespa/zookeeper/Configurator.java
@@ -100,10 +100,8 @@ public class Configurator {
     }
 
     private void writeMyIdFile(ZookeeperServerConfig config) throws IOException {
-        if (config.server().size() > 1) {
-            try (FileWriter writer = new FileWriter(getDefaults().underVespaHome(config.myidFile()))) {
-                writer.write(config.myid() + "\n");
-            }
+        try (FileWriter writer = new FileWriter(getDefaults().underVespaHome(config.myidFile()))) {
+            writer.write(config.myid() + "\n");
         }
     }
 
diff --git a/zookeeper-server/zookeeper-server-common/src/test/java/com/yahoo/vespa/zookeeper/ConfiguratorTest.java b/zookeeper-server/zookeeper-server-common/src/test/java/com/yahoo/vespa/zookeeper/ConfiguratorTest.java
index d73fbab8f64..2b2016460b8 100644
--- a/zookeeper-server/zookeeper-server-common/src/test/java/com/yahoo/vespa/zookeeper/ConfiguratorTest.java
+++ b/zookeeper-server/zookeeper-server-common/src/test/java/com/yahoo/vespa/zookeeper/ConfiguratorTest.java
@@ -55,9 +55,11 @@ public class ConfiguratorTest {
     @Test
     public void config_is_written_correctly_when_one_server() throws IOException {
         ZookeeperServerConfig.Builder builder = createConfigBuilderForSingleHost(cfgFile, idFile, jksKeyStoreFile);
+        builder.myidFile(idFile.getAbsolutePath());
+        builder.myid(0);
         new Configurator(builder.build()).writeConfigToDisk(Optional.empty());
         validateConfigFileSingleHost(cfgFile);
-        validateIdFile(idFile, "");
+        validateIdFile(idFile, "0\n");
     }
 
     @Test