diff --git a/src/java/main/org/apache/zookeeper/server/quorum/LearnerHandler.java b/src/java/main/org/apache/zookeeper/server/quorum/LearnerHandler.java
index f6c68b01355..023d6a63ca2 100644
--- a/src/java/main/org/apache/zookeeper/server/quorum/LearnerHandler.java
+++ b/src/java/main/org/apache/zookeeper/server/quorum/LearnerHandler.java
@@ -792,7 +792,14 @@ public boolean syncFollower(long peerLastZxid, ZKDatabase db, Leader leader) {
                     txnProposalItr.close();
                 }
             } else {
-                LOG.warn("Unhandled scenario for peer sid: " +  getSid());
+                LOG.warn("Unhandled scenario for peer sid: {} maxCommittedLog=0x{}"
+                        + " minCommittedLog=0x{} lastProcessedZxid=0x{}"
+                        + " peerLastZxid=0x{} txnLogSyncEnabled={}", getSid(),
+                        Long.toHexString(maxCommittedLog),
+                        Long.toHexString(minCommittedLog),
+                        Long.toHexString(lastProcessedZxid),
+                        Long.toHexString(peerLastZxid),
+                        txnLogSyncEnabled);
             }
             LOG.debug("Start forwarding 0x" + Long.toHexString(currentZxid) +
                       " for peer sid: " +  getSid());