baseline benchmark

.idea/misc.xml

@@ -1,5 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="BackendCodeEditorMiscSettings">
+    <option name="/Default/RiderDebugger/RiderRestoreDecompile/RestoreDecompileSetting/@EntryValue" value="false" type="bool" />
+    <option name="/Default/Housekeeping/GlobalSettingsUpgraded/IsUpgraded/@EntryValue" value="true" type="bool" />
+    <option name="/Default/Housekeeping/FeatureSuggestion/FeatureSuggestionManager/DisabledSuggesters/=SwitchToGoToActionSuggester/@EntryIndexedValue" value="true" type="bool" />
+    <option name="/Default/Environment/Hierarchy/GeneratedFilesCacheKey/Timestamp/@EntryValue" value="5" type="long" />
+  </component>
   <component name="CMakePythonSetting">
     <option name="pythonIntegrationState" value="YES" />
   </component>

benchmarks/db_bench.cc

@@ -74,7 +74,7 @@ static int FLAGS_reads = -1;
 static int FLAGS_threads = 1;
 
 // Size of each value
-static int FLAGS_value_size = 100;
+static int FLAGS_value_size = 1000;
 
 // Arrange to generate values that shrink to this fraction of
 // their original size after compression
@@ -852,8 +852,13 @@ class Benchmark {
       for (int j = 0; j < entries_per_batch_; j++) {
         const int k = seq ? i + j : thread->rand.Uniform(FLAGS_num);
         key.Set(k);
-        batch.Put(key.slice(), gen.Generate(value_size_));
-        bytes += value_size_ + key.slice().size();
+        auto value = gen.Generate(value_size_);
+        FieldArray field_array = {
+          {"1", value.ToString()},
+        };
+        auto encoded_value = Fields(field_array).Serialize();
+        batch.Put(key.slice(), Slice(encoded_value));
+        bytes += encoded_value.size() + key.slice().size();
         thread->stats.FinishedSingleOp();
       }
       s = db_->Write(write_options_, &batch);

db/db_impl.cc

@@ -257,6 +257,9 @@ void DBImpl::RemoveObsoleteFiles() {
         case kTableFile:
           keep = (live.find(number) != live.end());
           break;
+        case kVTableFile:
+          keep = (live.find(number) != live.end());
+          break;
         case kTempFile:
           // Any temp files that are currently being written to must
           // be recorded in pending_outputs_, which is inserted into "live"
@@ -1153,8 +1156,12 @@ Status DBImpl::Get(const ReadOptions& options, const Slice& key,
       s = current->Get(options, lkey, value, &stats);
       have_stat_update = true;
     }
-    auto fields = Fields(Slice(*value));
-    *value = fields["1"];
+    if (s.ok()) {
+      auto fields = Fields(Slice(*value));
+      *value = fields["1"];
+    } else {
+      *value = "";
+    }
     mutex_.Lock();
   }
 
@@ -1203,7 +1210,11 @@ Status DBImpl::Get(const ReadOptions& options, const Slice& key,
       s = current->Get(options, lkey, value, &stats);
       have_stat_update = true;
     }
-    *fields = Fields(Slice(*value));
+    if (s.ok()) {
+      *fields = Fields(Slice(*value));
+    } else {
+      *fields = Fields();
+    }
     mutex_.Lock();
   }
 

db/filename.cc

@@ -112,6 +112,8 @@ bool ParseFileName(const std::string& filename, uint64_t* number,
       *type = kTableFile;
     } else if (suffix == Slice(".dbtmp")) {
       *type = kTempFile;
+    } else if (suffix == Slice(".vtb")) {
+      *type = kVTableFile;
     } else {
       return false;
     }

db/filename.h

@@ -25,7 +25,8 @@ enum FileType {
   kDescriptorFile,
   kCurrentFile,
   kTempFile,
-  kInfoLogFile  // Either the current one, or an old one
+  kInfoLogFile,  // Either the current one, or an old one
+  kVTableFile
 };
 
 // Return the name of the log file with the specified number