diff --git a/src/Interpreters/ExpressionAnalyzer.cpp b/src/Interpreters/ExpressionAnalyzer.cpp
index 9cbf6258199..203797a0731 100644
--- a/src/Interpreters/ExpressionAnalyzer.cpp
+++ b/src/Interpreters/ExpressionAnalyzer.cpp
@@ -1098,6 +1098,8 @@ static std::shared_ptr<IJoin> chooseJoinAlgorithm(std::shared_ptr<TableJoin> ana
     {
         if (analyzed_join->getClauses().size() != 1)
             throw Exception("Full sorting merge join is supported only for single-condition joins", ErrorCodes::NOT_IMPLEMENTED);
+        if (analyzed_join->isSpecialStorage())
+            throw Exception("Full sorting merge join is not supported for special storage", ErrorCodes::NOT_IMPLEMENTED);
         return std::make_shared<FullSortingMergeJoin>(analyzed_join, sample_block);
     }
     return std::make_shared<JoinSwitcher>(analyzed_join, sample_block);
diff --git a/src/Interpreters/TableJoin.h b/src/Interpreters/TableJoin.h
index f953ebb111e..4210da6ae76 100644
--- a/src/Interpreters/TableJoin.h
+++ b/src/Interpreters/TableJoin.h
@@ -202,7 +202,7 @@ public:
     bool forceMergeJoin() const { return join_algorithm == MultiEnum<JoinAlgorithm>(JoinAlgorithm::PARTIAL_MERGE); }
 
     bool allowParallelHashJoin() const;
-    bool forceFullSortingMergeJoin() const { return join_algorithm.isSet(JoinAlgorithm::FULL_SORTING_MERGE); }
+    bool forceFullSortingMergeJoin() const { return !isSpecialStorage() && join_algorithm.isSet(JoinAlgorithm::FULL_SORTING_MERGE); }
 
     bool forceHashJoin() const
     {
diff --git a/src/Processors/Transforms/MergeJoinTransform.cpp b/src/Processors/Transforms/MergeJoinTransform.cpp
index dc7462ce24f..5ad2ea77c13 100644
--- a/src/Processors/Transforms/MergeJoinTransform.cpp
+++ b/src/Processors/Transforms/MergeJoinTransform.cpp
@@ -320,9 +320,9 @@ static void prepareChunk(Chunk & chunk)
 void MergeJoinAlgorithm::initialize(Inputs inputs)
 {
     if (inputs.size() != 2)
-        throw Exception("MergeJoinAlgorithm requires exactly two inputs", ErrorCodes::LOGICAL_ERROR);
+        throw Exception(ErrorCodes::LOGICAL_ERROR, "Two inputs  arerequired, got {}", inputs.size());
 
-    LOG_DEBUG(log, "MergeJoinAlgorithm initialize, number of inputs: {}", inputs.size());
+    LOG_DEBUG(log, "Initialize, number of inputs: {}", inputs.size());
     for (size_t i = 0; i < inputs.size(); ++i)
     {
         assert(inputs[i].chunk.getNumColumns() == cursors[i]->sampleBlock().columns());
@@ -861,7 +861,7 @@ MergeJoinTransform::MergeJoinTransform(
 
 void MergeJoinTransform::onFinish()
 {
-    algorithm.onFinish(total_stopwatch.elapsedSeconds());
+    algorithm.logElapsed(total_stopwatch.elapsedSeconds(), true);
 }
 
 }
diff --git a/src/Processors/Transforms/MergeJoinTransform.h b/src/Processors/Transforms/MergeJoinTransform.h
index d776900e205..5c588d5db94 100644
--- a/src/Processors/Transforms/MergeJoinTransform.h
+++ b/src/Processors/Transforms/MergeJoinTransform.h
@@ -232,14 +232,19 @@ public:
     virtual void consume(Input & input, size_t source_num) override;
     virtual Status merge() override;
 
-    void onFinish(double seconds)
+    void logElapsed(double seconds, bool force)
     {
+        /// Do not log more frequently than once per ten seconds
+        if (seconds - stat.last_log_seconds < 10 && !force)
+            return;
+
         LOG_TRACE(log,
             "Finished pocessing in {} seconds"
             ", left: {} blocks, {} rows; right: {} blocks, {} rows"
             ", max blocks loaded to memory: {}",
             seconds, stat.num_blocks[0], stat.num_rows[0], stat.num_blocks[1], stat.num_rows[1],
             stat.max_blocks_loaded);
+        stat.last_log_seconds = seconds;
     }
 
 private:
@@ -272,7 +277,10 @@ private:
         size_t num_rows[2] = {0, 0};
 
         size_t max_blocks_loaded = 0;
+
+        double last_log_seconds = 0;
     };
+
     Statistic stat;
 
     Poco::Logger * log;
@@ -280,6 +288,8 @@ private:
 
 class MergeJoinTransform final : public IMergingTransform<MergeJoinAlgorithm>
 {
+    using Base = IMergingTransform<MergeJoinAlgorithm>;
+
 public:
     MergeJoinTransform(
         JoinPtr table_join,
@@ -293,6 +303,12 @@ public:
 protected:
     void onFinish() override;
 
+    void work() override
+    {
+        algorithm.logElapsed(total_stopwatch.elapsedSeconds(), true);
+        Base::work();
+    }
+
     Poco::Logger * log;
 };
 
diff --git a/src/QueryPipeline/QueryPipelineBuilder.cpp b/src/QueryPipeline/QueryPipelineBuilder.cpp
index 353f37836de..ec186971b50 100644
--- a/src/QueryPipeline/QueryPipelineBuilder.cpp
+++ b/src/QueryPipeline/QueryPipelineBuilder.cpp
@@ -311,7 +311,7 @@ QueryPipelineBuilderPtr QueryPipelineBuilder::mergePipelines(
     Processors * collected_processors)
 {
     if (transform->getOutputs().size() != 1)
-        throw Exception("Merge transform must have exactly 1 output", ErrorCodes::LOGICAL_ERROR);
+        throw Exception(ErrorCodes::LOGICAL_ERROR, "Merge transform must have exactly 1 output, got {}", transform->getOutputs().size());
 
     connect(*left->pipe.output_ports.front(), transform->getInputs().front());
     connect(*right->pipe.output_ports.front(), transform->getInputs().back());
@@ -323,7 +323,7 @@ QueryPipelineBuilderPtr QueryPipelineBuilder::mergePipelines(
     left->pipe.processors.emplace_back(transform);
 
     left->pipe.processors.insert(left->pipe.processors.end(), right->pipe.processors.begin(), right->pipe.processors.end());
-    left->pipe.holder = std::move(right->pipe.holder);
+    // left->pipe.holder = std::move(right->pipe.holder);
     left->pipe.header = left->pipe.output_ports.front()->getHeader();
     left->pipe.max_parallel_streams = std::max(left->pipe.max_parallel_streams, right->pipe.max_parallel_streams);
     return left;