Log snippet instead of entire config

1 files changed, 5 insertions, 1 deletions

diff --git a/config/src/main/java/com/yahoo/config/subscription/impl/ConfigSubscription.java b/config/src/main/java/com/yahoo/config/subscription/impl/ConfigSubscription.java
index a9587da0f0b..eb05ed3c4e9 100644
--- a/config/src/main/java/com/yahoo/config/subscription/impl/ConfigSubscription.java
+++ b/config/src/main/java/com/yahoo/config/subscription/impl/ConfigSubscription.java
@@ -10,6 +10,7 @@ import com.yahoo.config.subscription.DirSource;
 import com.yahoo.config.subscription.FileSource;
 import com.yahoo.config.subscription.JarSource;
 import com.yahoo.config.subscription.RawSource;
+import com.yahoo.text.SnippetGenerator;
 import com.yahoo.vespa.config.ConfigKey;
 import com.yahoo.vespa.config.PayloadChecksums;
 import com.yahoo.vespa.config.TimingValues;
@@ -201,8 +202,11 @@ public abstract class ConfigSubscription<T extends ConfigInstance> {
         ConfigState<T> prev = this.config.get();
         boolean configChanged = !Objects.equals(prev.getConfig(), config);
         if (configChanged) {
+            SnippetGenerator generator = new SnippetGenerator();
+            int sizeHint = 500;
             log.log(Level.WARNING, "Config has changed unexpectedly for " + key + ", generation " + generation +
-                    ", config in state :" + prev.getConfig() + ", new config: " + config);
+                                   ", config in state :" + generator.makeSnippet(prev.getConfig().toString(), sizeHint) + ", new config: " +
+                                   generator.makeSnippet(config.toString(), sizeHint));
         }
         this.config.set(new ConfigState<>(true, generation, applyOnRestart, configChanged, config, payloadChecksums));
     }