From bd0bf66f318942d44a8731c6f0f65202946f8bc2 Mon Sep 17 00:00:00 2001
From: beorn7 <beorn@grafana.com>
Date: Wed, 17 Sep 2025 19:17:56 +0200
Subject: [PATCH] tsdb: Include floatHistograms in headAppender.Rollback()

Signed-off-by: beorn7 <beorn@grafana.com>
---
 tsdb/head_append.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tsdb/head_append.go b/tsdb/head_append.go
index a3bdee9684..80357fdf13 100644
--- a/tsdb/head_append.go
+++ b/tsdb/head_append.go
@@ -2229,6 +2229,13 @@ func (a *headAppender) Rollback() (err error) {
 			series.pendingCommit = false
 			series.Unlock()
 		}
+		for i := range b.floatHistograms {
+			series = b.floatHistogramSeries[i]
+			series.Lock()
+			series.cleanupAppendIDsBelow(a.cleanupAppendIDsBelow)
+			series.pendingCommit = false
+			series.Unlock()
+		}
 		b.close(h)
 	}
 	a.batches = a.batches[:0]