From c77aab584e73bb15812f72e6f58a8730570e3cd9 Mon Sep 17 00:00:00 2001
From: Yanqin Jin <yanqin@fb.com>
Date: Fri, 19 Apr 2019 11:52:13 -0700
Subject: [PATCH] Force read existing data during db repair (#5209)

Summary:
Setting read_opts.total_order_seek achieves this, even with a different prefix
extractor.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5209

Differential Revision: D14980388

Pulled By: riversand963

fbshipit-source-id: 16527989a3d6b3e3ae8241c894d011326429d66e
---
 db/repair.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/db/repair.cc b/db/repair.cc
index 7b9409a22..2715adcf1 100644
--- a/db/repair.cc
+++ b/db/repair.cc
@@ -517,8 +517,10 @@ class Repairer {
       }
     }
     if (status.ok()) {
+      ReadOptions ropts;
+      ropts.total_order_seek = true;
       InternalIterator* iter = table_cache_->NewIterator(
-          ReadOptions(), env_options_, cfd->internal_comparator(), t->meta,
+          ropts, env_options_, cfd->internal_comparator(), t->meta,
           nullptr /* range_del_agg */,
           cfd->GetLatestMutableCFOptions()->prefix_extractor.get());
       bool empty = true;