From 4da8f08c63af789ea3ac31cf288aeae4381919a8 Mon Sep 17 00:00:00 2001
From: Dawid Weiss <dawid.weiss@carrotsearch.com>
Date: Wed, 20 Jan 2021 19:05:22 +0100
Subject: [PATCH] LUCENE-9683: fix incorrect logic for measuring stall time
 information. (#2225)

---
 .../org/apache/lucene/index/ConcurrentMergeScheduler.java | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lucene/core/src/java/org/apache/lucene/index/ConcurrentMergeScheduler.java b/lucene/core/src/java/org/apache/lucene/index/ConcurrentMergeScheduler.java
index 34c9a741904..cfa5d11519f 100644
--- a/lucene/core/src/java/org/apache/lucene/index/ConcurrentMergeScheduler.java
+++ b/lucene/core/src/java/org/apache/lucene/index/ConcurrentMergeScheduler.java
@@ -598,10 +598,12 @@ public class ConcurrentMergeScheduler extends MergeScheduler {
         return false;
       }
 
-      if (verbose() && startStallTime == 0) {
-        message("    too many merges; stalling...");
+      if (startStallTime == 0) {
+        startStallTime = System.currentTimeMillis();
+        if (verbose()) {
+          message("    too many merges; stalling...");
+        }
       }
-      startStallTime = System.currentTimeMillis();
       doStall();
     }