diff --git a/db/db_impl.cc b/db/db_impl.cc
index 0f1d227cd3d1942c1941de12ba839bdaf59e8031..28cf48547af9a07c04a74796c416b5e1f35119d4 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -2945,6 +2945,7 @@ Status DBImpl::DoCompactionWork(CompactionState* compact,
 
   // Release mutex while we're actually doing the compaction work
   mutex_.Unlock();
+  log_buffer->FlushBufferToLog();
 
   const uint64_t start_micros = env_->NowMicros();
   unique_ptr<Iterator> input(versions_->MakeInputIterator(compact->compaction));