From 55599ee95d4151a2502465e0afc7c47bd1acba77 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Mon, 5 Feb 2018 18:40:32 +0200
Subject: core, trie: intermediate mempool between trie and database (#15857)
This commit reduces database I/O by not writing every state trie to disk.
---
consensus/errors.go | 4 ++++
1 file changed, 4 insertions(+)
(limited to 'consensus')
diff --git a/consensus/errors.go b/consensus/errors.go
index 3b136dbdd..a005c5f63 100644
--- a/consensus/errors.go
+++ b/consensus/errors.go
@@ -23,6 +23,10 @@ var (
// that is unknown.
ErrUnknownAncestor = errors.New("unknown ancestor")
+ // ErrPrunedAncestor is returned when validating a block requires an ancestor
+ // that is known, but the state of which is not available.
+ ErrPrunedAncestor = errors.New("pruned ancestor")
+
// ErrFutureBlock is returned when a block's timestamp is in the future according
// to the current node.
ErrFutureBlock = errors.New("block in the future")
--
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