From 7a9c0577272dc1e8a24fae68af730aa61807d6cd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?At=C4=B1l=20Sensalduz?=
 <44255923+atilsensalduz@users.noreply.github.com>
Date: Tue, 24 Feb 2026 15:25:00 +0300
Subject: [PATCH] Merge pull request #18180 from
 atilsensalduz/bugfix/tsdb-writeMetaFile-fd-leak

fix(tsdb): close file descriptor on json.MarshalIndent failure in writeMetaFile
---
 tsdb/block.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tsdb/block.go b/tsdb/block.go
index 118dd672ef..12d87f4ca3 100644
--- a/tsdb/block.go
+++ b/tsdb/block.go
@@ -291,7 +291,7 @@ func writeMetaFile(logger *slog.Logger, dir string, meta *BlockMeta) (int64, err
 
 	jsonMeta, err := json.MarshalIndent(meta, "", "\t")
 	if err != nil {
-		return 0, err
+		return 0, errors.Join(err, f.Close())
 	}
 
 	n, err := f.Write(jsonMeta)