Print compaction_options_universal.stop_style in LOG file

Summary:
Print compaction_options_universal.stop_style in LOG file
./db_bench --benchmarks=fillseq and read the log
Closes https://github.com/facebook/rocksdb/pull/2268

Differential Revision: D5032438

Pulled By: lightmark

fbshipit-source-id: 0e72fcd96a1caaf3cab20e86d39c75fbebf5ce37

options/options.cc

@@ -345,6 +345,19 @@ void ColumnFamilyOptions::Dump(Logger* log) const {
         log,
         "Options.compaction_options_universal.compression_size_percent: %d",
         compaction_options_universal.compression_size_percent);
+    const auto& it_compaction_stop_style = compaction_stop_style_to_string.find(
+        compaction_options_universal.stop_style);
+    std::string str_compaction_stop_style;
+    if (it_compaction_stop_style == compaction_stop_style_to_string.end()) {
+      assert(false);
+      str_compaction_stop_style =
+          "unknown_" + std::to_string(compaction_options_universal.stop_style);
+    } else {
+      str_compaction_stop_style = it_compaction_stop_style->second;
+    }
+    ROCKS_LOG_HEADER(log,
+                     "Options.compaction_options_universal.stop_style: %s",
+                     str_compaction_stop_style.c_str());
     ROCKS_LOG_HEADER(
         log, "Options.compaction_options_fifo.max_table_files_size: %" PRIu64,
         compaction_options_fifo.max_table_files_size);

options/options_helper.h

@@ -37,6 +37,11 @@ static std::map<CompactionPri, std::string> compaction_pri_to_string = {
     {kOldestSmallestSeqFirst, "kOldestSmallestSeqFirst"},
     {kMinOverlappingRatio, "kMinOverlappingRatio"}};
 
+static std::map<CompactionStopStyle, std::string>
+    compaction_stop_style_to_string = {
+        {kCompactionStopStyleSimilarSize, "kCompactionStopStyleSimilarSize"},
+        {kCompactionStopStyleTotalSize, "kCompactionStopStyleTotalSize"}};
+
 #ifndef ROCKSDB_LITE
 
 Status GetMutableOptionsFromStrings(