From 54ee71e16d52ba6d9ed62725e5d223dd6ee14bc3 Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Thu, 20 Jan 2022 20:11:56 +0200
Subject: [PATCH] lib/storage: set bsm.Block to nil on error, so the previous
 block couldn't be used.

This may help nailing down the issue https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2082
---
 lib/storage/block_stream_merger.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/storage/block_stream_merger.go b/lib/storage/block_stream_merger.go
index e41301e70..d48ad81a9 100644
--- a/lib/storage/block_stream_merger.go
+++ b/lib/storage/block_stream_merger.go
@@ -88,12 +88,14 @@ func (bsm *blockStreamMerger) nextBlock() error {
 	}
 
 	if err := bsrMin.Error(); err != nil {
+		bsm.Block = nil
 		return err
 	}
 
 	heap.Pop(&bsm.bsrHeap)
 
 	if len(bsm.bsrHeap) == 0 {
+		bsm.Block = nil
 		return io.EOF
 	}