From 81c0b7bfa9eaa4cbd67175f5a6e4d408ed12ea87 Mon Sep 17 00:00:00 2001
From: Jason Tedor <jason@tedor.me>
Date: Tue, 10 May 2016 11:55:27 -0400
Subject: [PATCH] Log exception when join validation fails

Today when join validation fails, we log a warning but do not log the
exception that led to the join validation failing. This commit modifies
this so that we do log this exception.
---
 .../main/java/org/elasticsearch/discovery/zen/ZenDiscovery.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/org/elasticsearch/discovery/zen/ZenDiscovery.java b/core/src/main/java/org/elasticsearch/discovery/zen/ZenDiscovery.java
index 607f8d34db1..596e40abfba 100644
--- a/core/src/main/java/org/elasticsearch/discovery/zen/ZenDiscovery.java
+++ b/core/src/main/java/org/elasticsearch/discovery/zen/ZenDiscovery.java
@@ -832,7 +832,7 @@ public class ZenDiscovery extends AbstractLifecycleComponent<Discovery> implemen
             try {
                 membership.sendValidateJoinRequestBlocking(node, state, joinTimeout);
             } catch (Throwable e) {
-                logger.warn("failed to validate incoming join request from node [{}]", node);
+                logger.warn("failed to validate incoming join request from node [{}]", e, node);
                 callback.onFailure(new IllegalStateException("failure when sending a validation request to node", e));
                 return;
             }