From 2fb1fea30fd027bbd824a26b682d04d91a8661dc Mon Sep 17 00:00:00 2001
From: Igor Canadi <icanadi@fb.com>
Date: Thu, 18 Sep 2014 10:42:54 -0700
Subject: [PATCH] Fix syncronization issues

---
 db/db_impl.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/db/db_impl.cc b/db/db_impl.cc
index addce91c2..26df8fb2a 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -1559,6 +1559,7 @@ Status DBImpl::WriteLevel0Table(ColumnFamilyData* cfd,
     // threads could be concurrently producing compacted files for
     // that key range.
     if (base != nullptr && db_options_.max_background_compactions <= 1 &&
+        db_options_.max_background_flushes == 0 &&
         cfd->ioptions()->compaction_style == kCompactionStyleLevel) {
       level = base->PickLevelForMemTableOutput(min_user_key, max_user_key);
     }
@@ -1913,7 +1914,6 @@ Status DBImpl::RunManualCompaction(ColumnFamilyData* cfd, int input_level,
       bg_cv_.Wait();
     } else {
       manual_compaction_ = &manual;
-      assert(bg_compaction_scheduled_ == 0);
       bg_compaction_scheduled_++;
       env_->Schedule(&DBImpl::BGWorkCompaction, this, Env::Priority::LOW);
     }