Intermediate changes

8 files changed, 47 insertions, 6 deletions

diff --git a/yt/yt/client/chunk_client/data_statistics.cpp b/yt/yt/client/chunk_client/data_statistics.cpp
index 1dbc2ad520..ce4ca1cd84 100644
--- a/yt/yt/client/chunk_client/data_statistics.cpp
+++ b/yt/yt/client/chunk_client/data_statistics.cpp
@@ -188,11 +188,19 @@ TCodecStatistics& TCodecStatistics::Append(const std::pair<ECodec, TDuration>& c
     return *this;
 }
 
+TCodecStatistics& TCodecStatistics::AppendToValueDictionaryCompression(TDuration duration)
+{
+    ValueDictionaryCompressionDuration_ += duration;
+    TotalDuration_ += duration;
+    return *this;
+}
+
 TCodecStatistics& TCodecStatistics::operator+=(const TCodecStatistics& other)
 {
     for (const auto& pair : other.CodecToDuration_) {
         Append(pair);
     }
+    AppendToValueDictionaryCompression(other.ValueDictionaryCompressionDuration_);
     return *this;
 }
 
@@ -204,6 +212,11 @@ TDuration TCodecStatistics::GetTotalDuration() const
 void FormatValue(TStringBuilderBase* builder, const TCodecStatistics& statistics, TStringBuf /* spec */)
 {
     FormatKeyValueRange(builder, statistics.CodecToDuration(), TDefaultFormatter());
+    if (statistics.ValueDictionaryCompressionDuration()) {
+        builder->AppendString(", ");
+        builder->AppendFormat("ValueDictionaryCompressionDuration: %v",
+            statistics.ValueDictionaryCompressionDuration());
+    }
 }
 
 TString ToString(const TCodecStatistics& statistics)
diff --git a/yt/yt/client/chunk_client/data_statistics.h b/yt/yt/client/chunk_client/data_statistics.h
index 880a510c59..0a8b918627 100644
--- a/yt/yt/client/chunk_client/data_statistics.h
+++ b/yt/yt/client/chunk_client/data_statistics.h
@@ -52,8 +52,11 @@ public:
         1>;
     DEFINE_BYREF_RO_PROPERTY(TCodecToDuration, CodecToDuration);
 
+    DEFINE_BYREF_RO_PROPERTY(TDuration, ValueDictionaryCompressionDuration);
+
 public:
     TCodecStatistics& Append(const TCodecDuration& codecTime);
+    TCodecStatistics& AppendToValueDictionaryCompression(TDuration duration);
 
     TCodecStatistics& operator+=(const TCodecStatistics& other);
 
diff --git a/yt/yt/client/table_client/config.cpp b/yt/yt/client/table_client/config.cpp
index a4de89b4f1..f11756c596 100644
--- a/yt/yt/client/table_client/config.cpp
+++ b/yt/yt/client/table_client/config.cpp
@@ -276,6 +276,16 @@ void TDictionaryCompressionConfig::Register(TRegistrar registrar)
             EDictionaryCompressionPolicy::FreshChunkFirst,
         });
 
+    registrar.Parameter("policy_probation_samples_size", &TThis::PolicyProbationSamplesSize)
+        .GreaterThan(0)
+        .Default(12_MB);
+    registrar.Parameter("max_acceptable_compression_ratio", &TThis::MaxAcceptableCompressionRatio)
+        .Default(0.7)
+        .InRange(0, 1);
+    registrar.Parameter("max_decompression_blob_size", &TThis::MaxDecompressionBlobSize)
+        .GreaterThan(0)
+        .Default(64_MB);
+
     registrar.Postprocessor([] (TThis* config) {
         if (config->DesiredSampleCount > config->MaxProcessedSampleCount) {
             THROW_ERROR_EXCEPTION("\"desired_sample_count\" cannot be greater than \"max_processed_sample_count\"");
diff --git a/yt/yt/client/table_client/config.h b/yt/yt/client/table_client/config.h
index 952dd2a94e..cca367f23b 100644
--- a/yt/yt/client/table_client/config.h
+++ b/yt/yt/client/table_client/config.h
@@ -249,6 +249,15 @@ public:
     //! Upon each chunk compression will independently decide which dictionary fits best.
     THashSet<EDictionaryCompressionPolicy> AppliedPolicies;
 
+    //! Upon each chunk compression will first accumulate samples of that weight
+    //! before deciding dictionary of which policy fits the best.
+    i64 PolicyProbationSamplesSize;
+    //! Upper limit on acceptable compression ratio. No chunk compression is performed if this limit is exceeded.
+    double MaxAcceptableCompressionRatio;
+
+    //! Upper limit on content size of a batch that can be decompressed within a single iteration.
+    i64 MaxDecompressionBlobSize;
+
     REGISTER_YSON_STRUCT(TDictionaryCompressionConfig);
 
     static void Register(TRegistrar registrar);
diff --git a/yt/yt/client/table_client/public.h b/yt/yt/client/table_client/public.h
index eeb18fd506..592cbcacd3 100644
--- a/yt/yt/client/table_client/public.h
+++ b/yt/yt/client/table_client/public.h
@@ -130,9 +130,10 @@ constexpr int TypicalHunkColumnCount = 8;
 ////////////////////////////////////////////////////////////////////////////////
 
 DEFINE_ENUM_WITH_UNDERLYING_TYPE(EHunkValueTag, ui8,
-    ((Inline)   (0))
-    ((LocalRef) (1))
-    ((GlobalRef)(2))
+    ((Inline)            (0))
+    ((LocalRef)          (1))
+    ((GlobalRef)         (2))
+    ((CompressedInline)  (3))
 );
 
 // Do not change these values since they are stored in the master snapshot.
diff --git a/yt/yt/client/table_client/row_base.h b/yt/yt/client/table_client/row_base.h
index b353edd1cf..126806aaad 100644
--- a/yt/yt/client/table_client/row_base.h
+++ b/yt/yt/client/table_client/row_base.h
@@ -33,9 +33,9 @@ static_assert(
     "Incorrect type order.");
 
 DEFINE_BIT_ENUM_WITH_UNDERLYING_TYPE(EValueFlags, ui8,
-    ((None)       (0x0000))
-    ((Aggregate)  (0x0001))
-    ((Hunk)       (0x0002))
+    ((None)        (0x00))
+    ((Aggregate)   (0x01))
+    ((Hunk)        (0x02))
 );
 
 DEFINE_ENUM_WITH_UNDERLYING_TYPE(ESimpleLogicalValueType, ui32,
diff --git a/yt/yt_proto/yt/client/chunk_client/proto/chunk_meta.proto b/yt/yt_proto/yt/client/chunk_client/proto/chunk_meta.proto
index d7e724b4cc..874ec93151 100644
--- a/yt/yt_proto/yt/client/chunk_client/proto/chunk_meta.proto
+++ b/yt/yt_proto/yt/client/chunk_client/proto/chunk_meta.proto
@@ -1,5 +1,6 @@
 package NYT.NChunkClient.NProto;
 
+import "yt_proto/yt/core/misc/proto/guid.proto";
 import "yt_proto/yt/core/misc/proto/protobuf_helpers.proto";
 
 option go_package = "a.yandex-team.ru/yt/go/proto/client/chunk_client";
@@ -91,6 +92,9 @@ message TMiscExt
     // If present, chunk is a compression dictionary of respective policy.
     optional int32 dictionary_compression_policy = 24; // EDictionaryCompressionPolicy
 
+    // If present, chunk values are comressed with dictionary of respective id.
+    optional NYT.NProto.TGuid compression_dictionary_id = 25;
+
     reserved 20;
 }
 
diff --git a/yt/yt_proto/yt/client/table_chunk_format/proto/chunk_meta.proto b/yt/yt_proto/yt/client/table_chunk_format/proto/chunk_meta.proto
index 875f93c819..6518287f9d 100644
--- a/yt/yt_proto/yt/client/table_chunk_format/proto/chunk_meta.proto
+++ b/yt/yt_proto/yt/client/table_chunk_format/proto/chunk_meta.proto
@@ -294,6 +294,7 @@ message THunkChunkRef
     optional int64 hunk_count = 2;
     optional int64 total_hunk_length = 3;
     optional int32 erasure_codec = 4; // NErasure::ECodec
+    optional NYT.NProto.TGuid compression_dictionary_id = 5;
 }
 
 message THunkChunkRefsExt