Added recipe for YDB Go SDK BulkUpsert Apache Arrow (#26108)

Author: kprokopenko

ydb/docs/en/core/recipes/ydb-sdk/bulk-upsert.md

@@ -138,6 +138,89 @@ Below are code examples showing the {{ ydb-short-name }} SDK built-in tools for
 
   {% endcut %}
 
+  {% cut "Bulk upsert `Apache Arrow` data" %}
+
+  In the following example, the [arrow package](https://pkg.go.dev/github.com/apache/arrow-go/v18/arrow) is used to prepare the data.
+
+  ```go
+  package main
+
+  import (
+    "bytes"
+    "context"
+    "fmt"
+
+    "github.com/apache/arrow-go/v18/arrow"
+    "github.com/apache/arrow-go/v18/arrow/array"
+    "github.com/apache/arrow-go/v18/arrow/ipc"
+    "github.com/apache/arrow-go/v18/arrow/memory"
+    "github.com/ydb-platform/ydb-go-sdk/v3"
+    "github.com/ydb-platform/ydb-go-sdk/v3/table"
+  )
+
+  func main() {
+    ctx := context.Background()
+    db, err := ydb.Open(ctx,
+      os.Getenv("YDB_CONNECTION_STRING"),
+      ydb.WithAccessTokenCredentials(os.Getenv("YDB_TOKEN")),
+    )
+    if err != nil {
+      panic(err)
+    }
+    defer db.Close(ctx) // cleanup resources
+
+    mem := memory.NewGoAllocator()
+
+    schema := arrow.NewSchema([]arrow.Field{
+      {Name: "id", Type: arrow.PrimitiveTypes.Int64},
+      {Name: "val", Type: arrow.BinaryTypes.String},
+    }, nil)
+
+    b := array.NewRecordBuilder(mem, schema)
+    defer b.Release()
+
+    b.Field(0).(*array.Int64Builder).AppendValues(
+      []int64{123, 234}, nil)
+
+    b.Field(1).(*array.StringBuilder).AppendValues(
+      []string{"data1", "data2"}, nil)
+
+    rec := b.NewRecordBatch()
+    defer rec.Release()
+
+    schemaPayload := ipc.GetSchemaPayload(rec.Schema(), mem)
+    defer schemaPayload.Release()
+
+    dataPayload, err := ipc.GetRecordBatchPayload(rec)
+    if err != nil {
+      panic(err)
+    }
+    defer dataPayload.Release()
+
+    var schemaBuf bytes.Buffer
+    _, err = schemaPayload.WritePayload(&schemaBuf)
+    if err != nil {
+      panic(err)
+    }
+
+    var dataBuf bytes.Buffer
+    _, err = dataPayload.WritePayload(&dataBuf)
+    if err != nil {
+      panic(err)
+    }
+
+    err = db.Table().BulkUpsert(ctx, "/local/bulk_upsert_example", table.BulkUpsertDataArrow(
+      dataBuf.Bytes(),
+      table.WithArrowSchema(schemaBuf.Bytes()), // schema is required
+    ))
+    if err != nil {
+      fmt.Printf("unexpected error: %v", err)
+    }
+  }
+  ```
+
+  {% endcut %}
+
 - Go (database/sql)
 
   The implementation of {{ ydb-short-name }} `database/sql` doesn't support bulk nontransactional upsert of data.

ydb/docs/ru/core/recipes/ydb-sdk/bulk-upsert.md

@@ -137,6 +137,90 @@
 
   {% endcut %}
 
+  {% cut "Пакетная вставка `Apache Arrow`" %}
+
+  В следующем примере для подготовки данных используется пакет [arrow](https://pkg.go.dev/github.com/apache/arrow-go/v18/arrow).
+
+  ```go
+  package main
+
+  import (
+    "bytes"
+    "context"
+    "fmt"
+
+    "github.com/apache/arrow-go/v18/arrow"
+    "github.com/apache/arrow-go/v18/arrow/array"
+    "github.com/apache/arrow-go/v18/arrow/ipc"
+    "github.com/apache/arrow-go/v18/arrow/memory"
+    "github.com/ydb-platform/ydb-go-sdk/v3"
+    "github.com/ydb-platform/ydb-go-sdk/v3/table"
+  )
+
+  func main() {
+    ctx := context.Background()
+    db, err := ydb.Open(ctx,
+      os.Getenv("YDB_CONNECTION_STRING"),
+      ydb.WithAccessTokenCredentials(os.Getenv("YDB_TOKEN")),
+    )
+    if err != nil {
+      panic(err)
+    }
+    defer db.Close(ctx) // cleanup resources
+
+    mem := memory.NewGoAllocator()
+
+    schema := arrow.NewSchema([]arrow.Field{
+      {Name: "id", Type: arrow.PrimitiveTypes.Int64},
+      {Name: "val", Type: arrow.BinaryTypes.String},
+    }, nil)
+
+    b := array.NewRecordBuilder(mem, schema)
+    defer b.Release()
+
+    b.Field(0).(*array.Int64Builder).AppendValues(
+      []int64{123, 234}, nil)
+
+    b.Field(1).(*array.StringBuilder).AppendValues(
+      []string{"data1", "data2"}, nil)
+
+    rec := b.NewRecordBatch()
+    defer rec.Release()
+
+    schemaPayload := ipc.GetSchemaPayload(rec.Schema(), mem)
+    defer schemaPayload.Release()
+
+    dataPayload, err := ipc.GetRecordBatchPayload(rec)
+    if err != nil {
+      panic(err)
+    }
+    defer dataPayload.Release()
+
+    var schemaBuf bytes.Buffer
+    _, err = schemaPayload.WritePayload(&schemaBuf)
+    if err != nil {
+      panic(err)
+    }
+
+    var dataBuf bytes.Buffer
+    _, err = dataPayload.WritePayload(&dataBuf)
+    if err != nil {
+      panic(err)
+    }
+
+    err = db.Table().BulkUpsert(ctx, "/local/bulk_upsert_example", table.BulkUpsertDataArrow(
+      dataBuf.Bytes(),
+      table.WithArrowSchema(schemaBuf.Bytes()), // schema is required
+    ))
+    if err != nil {
+      fmt.Printf("unexpected error: %v", err)
+    }
+  }
+
+  ```
+
+  {% endcut %}
+
 - Go (database/sql)
 
   Реализация `database/sql` драйвера для {{ ydb-short-name }} не поддерживает нетранзакционную пакетную вставку данных.