add log for the first write

Signed-off-by: Qi Xu <[email protected]>
tonyxuqqi · Mar 14, 2024 · 1e78d43 · 1e78d43
1 parent e0ca53a
commit 1e78d43
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/db/db_impl/db_impl_write.cc b/db/db_impl/db_impl_write.cc
@@ -1434,7 +1434,11 @@ IOStatus DBImpl::WriteToWAL(const WriteBatch& merged_batch,
                             uint64_t* log_size,
                             LogFileNumberSize& log_file_number_size) {
   assert(log_size != nullptr);
-
+  if (log_writer->file()->GetFileSize() == 0) {
+    ROCKS_LOG_INFO(immutable_db_options_.info_log,
+                   "Start writing to WAL: [%" PRIu64 "]",
+                   log_writer->get_log_number());
+  }
   Slice log_entry = WriteBatchInternal::Contents(&merged_batch);
   *log_size = log_entry.size();
   // When two_write_queues_ WriteToWAL has to be protected from concurretn calls