From cd08c7ef13613ceb88c1caf7b25e793ed51d47af Mon Sep 17 00:00:00 2001
From: Cao Manh Dat <datcm@apache.org>
Date: Tue, 10 Jul 2018 09:25:38 +0700
Subject: [PATCH] SOLR-12412: release IndexWriter after getting tragic
 exception

---
 .../core/src/java/org/apache/solr/update/SolrCoreState.java | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/solr/core/src/java/org/apache/solr/update/SolrCoreState.java b/solr/core/src/java/org/apache/solr/update/SolrCoreState.java
index 64f6bc6b76b..665db776913 100644
--- a/solr/core/src/java/org/apache/solr/update/SolrCoreState.java
+++ b/solr/core/src/java/org/apache/solr/update/SolrCoreState.java
@@ -197,6 +197,10 @@ public abstract class SolrCoreState {
   public Throwable getTragicException() throws IOException {
     RefCounted<IndexWriter> ref = getIndexWriter(null);
     if (ref == null) return null;
-    return ref.get().getTragicException();
+    try {
+      return ref.get().getTragicException();
+    } finally {
+      ref.decref();
+    }
   }
 }