From bed493422472f28ddf8e5ff3f212c4b6860896ca Mon Sep 17 00:00:00 2001
From: beorn7 <beorn@soundcloud.com>
Date: Thu, 9 Feb 2017 01:53:57 +0100
Subject: [PATCH] storage: One more persist error code path discovered

Also, in that code path, set chunkDescsOffset to 0 rather than -1 in
case of "dropped more chunks from persistence than from memory" so
that no other weird things happen before the series is quarantined for
good.
---
 storage/local/storage.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/storage/local/storage.go b/storage/local/storage.go
index 63eb94698..25dc30b0a 100644
--- a/storage/local/storage.go
+++ b/storage/local/storage.go
@@ -1513,7 +1513,8 @@ func (s *MemorySeriesStorage) writeMemorySeries(
 		series.chunkDescsOffset -= numDroppedFromPersistence
 		if series.chunkDescsOffset < 0 {
 			persistErr = errors.New("dropped more chunks from persistence than from memory")
-			series.chunkDescsOffset = -1
+			series.chunkDescsOffset = 0
+			return true
 		}
 	}
 	return false