gemini-code-assist[bot] commented on code in PR #38362:
URL: https://github.com/apache/beam/pull/38362#discussion_r3181753642


##########
sdks/java/io/datadog/src/main/java/org/apache/beam/sdk/io/datadog/DatadogWriteSchemaTransformProvider.java:
##########
@@ -0,0 +1,279 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.io.datadog;
+
+import static 
org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.auto.service.AutoService;
+import java.util.Collections;
+import java.util.List;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransform;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.TypedSchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.providers.ErrorHandling;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionRowTuple;
+import org.apache.beam.sdk.values.PCollectionTuple;
+import org.apache.beam.sdk.values.Row;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.beam.sdk.values.TupleTagList;
+
+@AutoService(SchemaTransformProvider.class)
+public class DatadogWriteSchemaTransformProvider
+    extends 
TypedSchemaTransformProvider<DatadogWriteSchemaTransformConfiguration> {
+  private static final String IDENTIFIER = 
"beam:schematransform:org.apache.beam:datadog_write:v1";
+  static final String INPUT = "input";
+  static final String OUTPUT = "output";
+  static final String ERROR = "errors";
+  public static final TupleTag<Row> ERROR_TAG = new TupleTag<Row>() {};
+  public static final TupleTag<Void> OUTPUT_TAG = new TupleTag<Void>() {};
+  public static final TupleTag<DatadogEvent> EVENT_TAG = new 
TupleTag<DatadogEvent>() {};
+
+  @Override
+  protected Class<DatadogWriteSchemaTransformConfiguration> 
configurationClass() {
+    return DatadogWriteSchemaTransformConfiguration.class;
+  }
+
+  /** Returns the expected {@link SchemaTransform} of the configuration. */
+  @Override
+  protected SchemaTransform from(DatadogWriteSchemaTransformConfiguration 
configuration) {
+    return new DatadogWriteSchemaTransform(configuration);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} identifier 
method. */
+  @Override
+  public String identifier() {
+    return IDENTIFIER;
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} input 
collection names method. */
+  @Override
+  public List<String> inputCollectionNames() {
+    return Collections.singletonList(INPUT);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} output 
collection names method. */
+  @Override
+  public List<String> outputCollectionNames() {
+    return Collections.singletonList(ERROR);
+  }
+
+  /**
+   * An implementation of {@link SchemaTransform} for Datadog Write jobs 
configured using {@link
+   * DatadogWriteSchemaTransformConfiguration}.
+   */
+  static class DatadogWriteSchemaTransform extends SchemaTransform {
+    private final DatadogWriteSchemaTransformConfiguration configuration;
+
+    DatadogWriteSchemaTransform(DatadogWriteSchemaTransformConfiguration 
configuration) {
+      this.configuration = configuration;
+    }
+
+    @Override
+    public PCollectionRowTuple expand(PCollectionRowTuple input) {
+      // Validate configuration parameters
+      configuration.validate();
+
+      // Obtain input rows
+      PCollection<Row> inputRows = input.get(INPUT);
+
+      // Check for errors
+      boolean handleErrors = 
ErrorHandling.hasOutput(configuration.getErrorHandling());
+
+      Schema inputSchema = inputRows.getSchema();
+      Schema dynamicErrorSchema =
+          Schema.builder()
+              .addNullableRowField("failed_row", inputSchema)
+              .addNullableField("payload", Schema.FieldType.STRING)
+              .addNullableField("statusCode", Schema.FieldType.INT32)
+              .addNullableField("statusMessage", Schema.FieldType.STRING)
+              .build();
+
+      PCollectionTuple convertResult =
+          inputRows.apply(
+              "Convert to DatadogEvent",
+              ParDo.of(new RowToEventFn(handleErrors, ERROR_TAG, 
dynamicErrorSchema))
+                  .withOutputTags(EVENT_TAG, TupleTagList.of(ERROR_TAG)));
+
+      PCollection<DatadogEvent> datadogEvents =
+          convertResult.get(EVENT_TAG).setCoder(DatadogEventCoder.of());
+      PCollection<Row> conversionErrors =
+          convertResult
+              .get(ERROR_TAG)
+              
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+      // Configure DatadogIO.Write
+      DatadogIO.Write.Builder builder =
+          DatadogIO.writeBuilder(configuration.getMinBatchCount())
+              .withUrl(configuration.getUrl())
+              .withApiKey(configuration.getApiKey());
+
+      Integer batchCount = configuration.getBatchCount();
+      if (batchCount != null) {
+        builder = builder.withBatchCount(batchCount);
+      }
+      Long maxBufferSize = configuration.getMaxBufferSize();
+      if (maxBufferSize != null) {
+        builder = builder.withMaxBufferSize(maxBufferSize);
+      }
+      Integer parallelism = configuration.getParallelism();
+      if (parallelism != null) {
+        builder = builder.withParallelism(parallelism);
+      }
+
+      DatadogIO.Write write = builder.build();
+
+      // Apply DatadogIO.Write
+      PCollection<DatadogWriteError> writeErrors = datadogEvents.apply("Write 
To Datadog", write);

Review Comment:
   ![high](https://www.gstatic.com/codereviewagent/high-priority.svg)
   
   If `errorHandling` is not specified (null), the `writeErrors` PCollection is 
ignored. Since `DatadogIO.Write` returns errors in a PCollection rather than 
throwing exceptions, write failures will be silent. You should add a transform 
to fail the pipeline if any errors occur and no error output is configured.
   
   ```java
         // Apply DatadogIO.Write
         PCollection<DatadogWriteError> writeErrors = 
datadogEvents.apply("Write To Datadog", write);
   
         // Handle errors
         ErrorHandling errorHandling = configuration.getErrorHandling();
         if (errorHandling == null) {
           writeErrors.apply("Fail on Write Error", 
org.apache.beam.sdk.transforms.ParDo.of(new 
org.apache.beam.sdk.transforms.DoFn<DatadogWriteError, Void>() {
             @ProcessElement
             public void processElement(@Element DatadogWriteError error) {
               throw new RuntimeException("Datadog write failed: " + 
error.statusMessage());
             }
           }));
         }
   ```



##########
sdks/java/io/datadog/src/main/java/org/apache/beam/sdk/io/datadog/DatadogWriteSchemaTransformProvider.java:
##########
@@ -0,0 +1,279 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.io.datadog;
+
+import static 
org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.auto.service.AutoService;
+import java.util.Collections;
+import java.util.List;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransform;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.TypedSchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.providers.ErrorHandling;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionRowTuple;
+import org.apache.beam.sdk.values.PCollectionTuple;
+import org.apache.beam.sdk.values.Row;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.beam.sdk.values.TupleTagList;
+
+@AutoService(SchemaTransformProvider.class)
+public class DatadogWriteSchemaTransformProvider
+    extends 
TypedSchemaTransformProvider<DatadogWriteSchemaTransformConfiguration> {
+  private static final String IDENTIFIER = 
"beam:schematransform:org.apache.beam:datadog_write:v1";
+  static final String INPUT = "input";
+  static final String OUTPUT = "output";
+  static final String ERROR = "errors";
+  public static final TupleTag<Row> ERROR_TAG = new TupleTag<Row>() {};
+  public static final TupleTag<Void> OUTPUT_TAG = new TupleTag<Void>() {};
+  public static final TupleTag<DatadogEvent> EVENT_TAG = new 
TupleTag<DatadogEvent>() {};
+
+  @Override
+  protected Class<DatadogWriteSchemaTransformConfiguration> 
configurationClass() {
+    return DatadogWriteSchemaTransformConfiguration.class;
+  }
+
+  /** Returns the expected {@link SchemaTransform} of the configuration. */
+  @Override
+  protected SchemaTransform from(DatadogWriteSchemaTransformConfiguration 
configuration) {
+    return new DatadogWriteSchemaTransform(configuration);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} identifier 
method. */
+  @Override
+  public String identifier() {
+    return IDENTIFIER;
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} input 
collection names method. */
+  @Override
+  public List<String> inputCollectionNames() {
+    return Collections.singletonList(INPUT);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} output 
collection names method. */
+  @Override
+  public List<String> outputCollectionNames() {
+    return Collections.singletonList(ERROR);
+  }
+
+  /**
+   * An implementation of {@link SchemaTransform} for Datadog Write jobs 
configured using {@link
+   * DatadogWriteSchemaTransformConfiguration}.
+   */
+  static class DatadogWriteSchemaTransform extends SchemaTransform {
+    private final DatadogWriteSchemaTransformConfiguration configuration;
+
+    DatadogWriteSchemaTransform(DatadogWriteSchemaTransformConfiguration 
configuration) {
+      this.configuration = configuration;
+    }
+
+    @Override
+    public PCollectionRowTuple expand(PCollectionRowTuple input) {
+      // Validate configuration parameters
+      configuration.validate();
+
+      // Obtain input rows
+      PCollection<Row> inputRows = input.get(INPUT);
+
+      // Check for errors
+      boolean handleErrors = 
ErrorHandling.hasOutput(configuration.getErrorHandling());
+
+      Schema inputSchema = inputRows.getSchema();
+      Schema dynamicErrorSchema =
+          Schema.builder()
+              .addNullableRowField("failed_row", inputSchema)
+              .addNullableField("payload", Schema.FieldType.STRING)
+              .addNullableField("statusCode", Schema.FieldType.INT32)
+              .addNullableField("statusMessage", Schema.FieldType.STRING)
+              .build();
+
+      PCollectionTuple convertResult =
+          inputRows.apply(
+              "Convert to DatadogEvent",
+              ParDo.of(new RowToEventFn(handleErrors, ERROR_TAG, 
dynamicErrorSchema))
+                  .withOutputTags(EVENT_TAG, TupleTagList.of(ERROR_TAG)));
+
+      PCollection<DatadogEvent> datadogEvents =
+          convertResult.get(EVENT_TAG).setCoder(DatadogEventCoder.of());
+      PCollection<Row> conversionErrors =
+          convertResult
+              .get(ERROR_TAG)
+              
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+      // Configure DatadogIO.Write
+      DatadogIO.Write.Builder builder =
+          DatadogIO.writeBuilder(configuration.getMinBatchCount())
+              .withUrl(configuration.getUrl())
+              .withApiKey(configuration.getApiKey());
+
+      Integer batchCount = configuration.getBatchCount();
+      if (batchCount != null) {
+        builder = builder.withBatchCount(batchCount);
+      }
+      Long maxBufferSize = configuration.getMaxBufferSize();
+      if (maxBufferSize != null) {
+        builder = builder.withMaxBufferSize(maxBufferSize);
+      }
+      Integer parallelism = configuration.getParallelism();
+      if (parallelism != null) {
+        builder = builder.withParallelism(parallelism);
+      }
+
+      DatadogIO.Write write = builder.build();
+
+      // Apply DatadogIO.Write
+      PCollection<DatadogWriteError> writeErrors = datadogEvents.apply("Write 
To Datadog", write);
+
+      // Handle errors
+      ErrorHandling errorHandling = configuration.getErrorHandling();
+      if (errorHandling != null) {
+        PCollection<Row> writeErrorRows =
+            writeErrors
+                .apply(
+                    "Convert Write Errors to Rows",
+                    org.apache.beam.sdk.transforms.MapElements.into(
+                            org.apache.beam.sdk.values.TypeDescriptors.rows())
+                        .via(
+                            error ->
+                                Row.withSchema(dynamicErrorSchema)
+                                    .addValue(null)
+                                    .addValue(error.payload())
+                                    .addValue(error.statusCode())
+                                    .addValue(error.statusMessage())
+                                    .build()))
+                
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+        PCollection<Row> allErrors =
+            org.apache.beam.sdk.values.PCollectionList.of(conversionErrors)
+                .and(writeErrorRows)
+                .apply("Flatten Errors", 
org.apache.beam.sdk.transforms.Flatten.pCollections())
+                
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+        return PCollectionRowTuple.of(errorHandling.getOutput(), allErrors);

Review Comment:
   ![high](https://www.gstatic.com/codereviewagent/high-priority.svg)
   
   The output key used in `PCollectionRowTuple.of` should match the name 
declared in `outputCollectionNames()`, which is `ERROR` ("errors"). While 
`errorHandling.getOutput()` provides the user-defined name for the YAML 
context, the `SchemaTransform` itself must use its internal identifier for the 
output port. The YAML layer handles the mapping to the user-defined name.
   
   ```suggestion
           return PCollectionRowTuple.of(ERROR, allErrors);
   ```



##########
sdks/java/io/datadog/src/main/java/org/apache/beam/sdk/io/datadog/DatadogWriteSchemaTransformProvider.java:
##########
@@ -0,0 +1,279 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.io.datadog;
+
+import static 
org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.auto.service.AutoService;
+import java.util.Collections;
+import java.util.List;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransform;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.TypedSchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.providers.ErrorHandling;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionRowTuple;
+import org.apache.beam.sdk.values.PCollectionTuple;
+import org.apache.beam.sdk.values.Row;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.beam.sdk.values.TupleTagList;
+
+@AutoService(SchemaTransformProvider.class)
+public class DatadogWriteSchemaTransformProvider
+    extends 
TypedSchemaTransformProvider<DatadogWriteSchemaTransformConfiguration> {
+  private static final String IDENTIFIER = 
"beam:schematransform:org.apache.beam:datadog_write:v1";
+  static final String INPUT = "input";
+  static final String OUTPUT = "output";
+  static final String ERROR = "errors";
+  public static final TupleTag<Row> ERROR_TAG = new TupleTag<Row>() {};
+  public static final TupleTag<Void> OUTPUT_TAG = new TupleTag<Void>() {};
+  public static final TupleTag<DatadogEvent> EVENT_TAG = new 
TupleTag<DatadogEvent>() {};
+
+  @Override
+  protected Class<DatadogWriteSchemaTransformConfiguration> 
configurationClass() {
+    return DatadogWriteSchemaTransformConfiguration.class;
+  }
+
+  /** Returns the expected {@link SchemaTransform} of the configuration. */
+  @Override
+  protected SchemaTransform from(DatadogWriteSchemaTransformConfiguration 
configuration) {
+    return new DatadogWriteSchemaTransform(configuration);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} identifier 
method. */
+  @Override
+  public String identifier() {
+    return IDENTIFIER;
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} input 
collection names method. */
+  @Override
+  public List<String> inputCollectionNames() {
+    return Collections.singletonList(INPUT);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} output 
collection names method. */
+  @Override
+  public List<String> outputCollectionNames() {
+    return Collections.singletonList(ERROR);
+  }
+
+  /**
+   * An implementation of {@link SchemaTransform} for Datadog Write jobs 
configured using {@link
+   * DatadogWriteSchemaTransformConfiguration}.
+   */
+  static class DatadogWriteSchemaTransform extends SchemaTransform {
+    private final DatadogWriteSchemaTransformConfiguration configuration;
+
+    DatadogWriteSchemaTransform(DatadogWriteSchemaTransformConfiguration 
configuration) {
+      this.configuration = configuration;
+    }
+
+    @Override
+    public PCollectionRowTuple expand(PCollectionRowTuple input) {
+      // Validate configuration parameters
+      configuration.validate();
+
+      // Obtain input rows
+      PCollection<Row> inputRows = input.get(INPUT);
+
+      // Check for errors
+      boolean handleErrors = 
ErrorHandling.hasOutput(configuration.getErrorHandling());
+
+      Schema inputSchema = inputRows.getSchema();
+      Schema dynamicErrorSchema =
+          Schema.builder()
+              .addNullableRowField("failed_row", inputSchema)
+              .addNullableField("payload", Schema.FieldType.STRING)
+              .addNullableField("statusCode", Schema.FieldType.INT32)
+              .addNullableField("statusMessage", Schema.FieldType.STRING)
+              .build();
+
+      PCollectionTuple convertResult =
+          inputRows.apply(
+              "Convert to DatadogEvent",
+              ParDo.of(new RowToEventFn(handleErrors, ERROR_TAG, 
dynamicErrorSchema))
+                  .withOutputTags(EVENT_TAG, TupleTagList.of(ERROR_TAG)));
+
+      PCollection<DatadogEvent> datadogEvents =
+          convertResult.get(EVENT_TAG).setCoder(DatadogEventCoder.of());
+      PCollection<Row> conversionErrors =
+          convertResult
+              .get(ERROR_TAG)
+              
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+      // Configure DatadogIO.Write
+      DatadogIO.Write.Builder builder =
+          DatadogIO.writeBuilder(configuration.getMinBatchCount())
+              .withUrl(configuration.getUrl())
+              .withApiKey(configuration.getApiKey());
+
+      Integer batchCount = configuration.getBatchCount();
+      if (batchCount != null) {
+        builder = builder.withBatchCount(batchCount);
+      }
+      Long maxBufferSize = configuration.getMaxBufferSize();
+      if (maxBufferSize != null) {
+        builder = builder.withMaxBufferSize(maxBufferSize);
+      }
+      Integer parallelism = configuration.getParallelism();
+      if (parallelism != null) {
+        builder = builder.withParallelism(parallelism);
+      }
+
+      DatadogIO.Write write = builder.build();
+
+      // Apply DatadogIO.Write
+      PCollection<DatadogWriteError> writeErrors = datadogEvents.apply("Write 
To Datadog", write);
+
+      // Handle errors
+      ErrorHandling errorHandling = configuration.getErrorHandling();
+      if (errorHandling != null) {
+        PCollection<Row> writeErrorRows =
+            writeErrors
+                .apply(
+                    "Convert Write Errors to Rows",
+                    org.apache.beam.sdk.transforms.MapElements.into(
+                            org.apache.beam.sdk.values.TypeDescriptors.rows())
+                        .via(
+                            error ->
+                                Row.withSchema(dynamicErrorSchema)
+                                    .addValue(null)
+                                    .addValue(error.payload())
+                                    .addValue(error.statusCode())
+                                    .addValue(error.statusMessage())
+                                    .build()))
+                
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+        PCollection<Row> allErrors =
+            org.apache.beam.sdk.values.PCollectionList.of(conversionErrors)
+                .and(writeErrorRows)
+                .apply("Flatten Errors", 
org.apache.beam.sdk.transforms.Flatten.pCollections())
+                
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+        return PCollectionRowTuple.of(errorHandling.getOutput(), allErrors);
+      } else {
+        return PCollectionRowTuple.empty(input.getPipeline());
+      }
+    }
+  }
+
+  static final Schema WRITE_ERROR_SCHEMA =
+      Schema.builder()
+          .addNullableField("payload", Schema.FieldType.STRING)
+          .addNullableField("statusCode", Schema.FieldType.INT32)
+          .addNullableField("statusMessage", Schema.FieldType.STRING)
+          .build();
+
+  static final Schema DATADOG_EVENT_SCHEMA =
+      Schema.builder()
+          .addNullableField("ddsource", Schema.FieldType.STRING)
+          .addNullableField("ddtags", Schema.FieldType.STRING)
+          .addNullableField("hostname", Schema.FieldType.STRING)
+          .addNullableField("service", Schema.FieldType.STRING)
+          .addNullableField("message", Schema.FieldType.STRING)
+          .build();
+
+  static Row eventToRow(DatadogEvent event) {
+    return Row.withSchema(DATADOG_EVENT_SCHEMA)
+        .addValue(event.ddsource())
+        .addValue(event.ddtags())
+        .addValue(event.hostname())
+        .addValue(event.service())
+        .addValue(event.message())
+        .build();
+  }
+
+  static DatadogEvent rowToEvent(Row row) {
+    DatadogEvent.Builder builder = DatadogEvent.newBuilder();
+    Schema schema = row.getSchema();
+
+    String ddsource = schema.hasField("ddsource") ? row.getString("ddsource") 
: null;
+    if (ddsource != null) {
+      builder.withSource(ddsource);
+    }
+    String ddtags = schema.hasField("ddtags") ? row.getString("ddtags") : null;
+    if (ddtags != null) {
+      builder.withTags(ddtags);
+    }
+    String hostname = schema.hasField("hostname") ? row.getString("hostname") 
: null;
+    if (hostname != null) {
+      builder.withHostname(hostname);
+    }
+    String service = schema.hasField("service") ? row.getString("service") : 
null;
+    if (service != null) {
+      builder.withService(service);
+    }
+    String message = schema.hasField("message") ? row.getString("message") : 
null;
+    builder.withMessage(checkNotNull(message, "Message is required."));
+
+    return builder.build();
+  }
+
+  static class RowToEventFn extends DoFn<Row, DatadogEvent> {
+    private final boolean handleErrors;
+    private final TupleTag<Row> errorOutputTag;
+    private final Schema errorSchema;
+
+    RowToEventFn(boolean handleErrors, TupleTag<Row> errorOutputTag, Schema 
errorSchema) {
+      this.handleErrors = handleErrors;
+      this.errorOutputTag = errorOutputTag;
+      this.errorSchema = errorSchema;
+    }
+
+    @ProcessElement
+    public void processElement(ProcessContext c) {
+      try {
+        c.output(rowToEvent(c.element()));
+      } catch (Exception e) {
+        if (handleErrors) {
+          c.output(
+              errorOutputTag,
+              Row.withSchema(errorSchema)
+                  .addValue(c.element())
+                  .addValue(c.element().toString())

Review Comment:
   ![medium](https://www.gstatic.com/codereviewagent/medium-priority.svg)
   
   Using `c.element().toString()` as the error payload might produce very large 
strings for complex rows, which could exceed Datadog's limits or be difficult 
to parse. Consider using a more structured format like JSON if available, or 
only including key identifying fields.



##########
sdks/python/apache_beam/yaml/integration_tests.py:
##########
@@ -20,19 +20,46 @@
 import contextlib
 import copy
 import glob
+import gzip
+import http.server
+import io
 import itertools
+import json
 import logging
 import os
 import random
 import secrets
 import sqlite3
 import string
+import struct
+import threading
 import unittest
 import uuid
 from datetime import datetime
 from datetime import timezone
 
 import mock
+
+from apache_beam.coders import Coder
+from apache_beam.coders.coder_impl import CoderImpl
+
+
+class BigEndianIntegerCoderImpl(CoderImpl):
+  def encode_to_stream(self, value, stream, nested):
+    stream.write(struct.pack('>i', value))
+
+  def decode_from_stream(self, stream, nested):
+    return struct.unpack('>i', stream.read(4))[0]
+
+
+class BigEndianIntegerCoder(Coder):
+  def get_impl(self):
+    return BigEndianIntegerCoderImpl()
+
+
+Coder.register_urn(
+    'beam:coders:javasdk:0.1',
+    None, lambda payload, components, context: BigEndianIntegerCoder())

Review Comment:
   ![medium](https://www.gstatic.com/codereviewagent/medium-priority.svg)
   
   The `BigEndianIntegerCoder` and its registration seem unrelated to the 
Datadog IO implementation. If this is not required for the Datadog integration 
tests, it should be removed from this pull request to maintain a clean scope.



##########
sdks/java/io/datadog/src/main/java/org/apache/beam/sdk/io/datadog/DatadogWriteSchemaTransformProvider.java:
##########
@@ -0,0 +1,279 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.io.datadog;
+
+import static 
org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkNotNull;
+
+import com.google.auto.service.AutoService;
+import java.util.Collections;
+import java.util.List;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransform;
+import org.apache.beam.sdk.schemas.transforms.SchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.TypedSchemaTransformProvider;
+import org.apache.beam.sdk.schemas.transforms.providers.ErrorHandling;
+import org.apache.beam.sdk.transforms.DoFn;
+import org.apache.beam.sdk.transforms.ParDo;
+import org.apache.beam.sdk.values.PCollection;
+import org.apache.beam.sdk.values.PCollectionRowTuple;
+import org.apache.beam.sdk.values.PCollectionTuple;
+import org.apache.beam.sdk.values.Row;
+import org.apache.beam.sdk.values.TupleTag;
+import org.apache.beam.sdk.values.TupleTagList;
+
+@AutoService(SchemaTransformProvider.class)
+public class DatadogWriteSchemaTransformProvider
+    extends 
TypedSchemaTransformProvider<DatadogWriteSchemaTransformConfiguration> {
+  private static final String IDENTIFIER = 
"beam:schematransform:org.apache.beam:datadog_write:v1";
+  static final String INPUT = "input";
+  static final String OUTPUT = "output";
+  static final String ERROR = "errors";
+  public static final TupleTag<Row> ERROR_TAG = new TupleTag<Row>() {};
+  public static final TupleTag<Void> OUTPUT_TAG = new TupleTag<Void>() {};
+  public static final TupleTag<DatadogEvent> EVENT_TAG = new 
TupleTag<DatadogEvent>() {};
+
+  @Override
+  protected Class<DatadogWriteSchemaTransformConfiguration> 
configurationClass() {
+    return DatadogWriteSchemaTransformConfiguration.class;
+  }
+
+  /** Returns the expected {@link SchemaTransform} of the configuration. */
+  @Override
+  protected SchemaTransform from(DatadogWriteSchemaTransformConfiguration 
configuration) {
+    return new DatadogWriteSchemaTransform(configuration);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} identifier 
method. */
+  @Override
+  public String identifier() {
+    return IDENTIFIER;
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} input 
collection names method. */
+  @Override
+  public List<String> inputCollectionNames() {
+    return Collections.singletonList(INPUT);
+  }
+
+  /** Implementation of the {@link TypedSchemaTransformProvider} output 
collection names method. */
+  @Override
+  public List<String> outputCollectionNames() {
+    return Collections.singletonList(ERROR);
+  }
+
+  /**
+   * An implementation of {@link SchemaTransform} for Datadog Write jobs 
configured using {@link
+   * DatadogWriteSchemaTransformConfiguration}.
+   */
+  static class DatadogWriteSchemaTransform extends SchemaTransform {
+    private final DatadogWriteSchemaTransformConfiguration configuration;
+
+    DatadogWriteSchemaTransform(DatadogWriteSchemaTransformConfiguration 
configuration) {
+      this.configuration = configuration;
+    }
+
+    @Override
+    public PCollectionRowTuple expand(PCollectionRowTuple input) {
+      // Validate configuration parameters
+      configuration.validate();
+
+      // Obtain input rows
+      PCollection<Row> inputRows = input.get(INPUT);
+
+      // Check for errors
+      boolean handleErrors = 
ErrorHandling.hasOutput(configuration.getErrorHandling());
+
+      Schema inputSchema = inputRows.getSchema();
+      Schema dynamicErrorSchema =
+          Schema.builder()
+              .addNullableRowField("failed_row", inputSchema)
+              .addNullableField("payload", Schema.FieldType.STRING)
+              .addNullableField("statusCode", Schema.FieldType.INT32)
+              .addNullableField("statusMessage", Schema.FieldType.STRING)
+              .build();
+
+      PCollectionTuple convertResult =
+          inputRows.apply(
+              "Convert to DatadogEvent",
+              ParDo.of(new RowToEventFn(handleErrors, ERROR_TAG, 
dynamicErrorSchema))
+                  .withOutputTags(EVENT_TAG, TupleTagList.of(ERROR_TAG)));
+
+      PCollection<DatadogEvent> datadogEvents =
+          convertResult.get(EVENT_TAG).setCoder(DatadogEventCoder.of());
+      PCollection<Row> conversionErrors =
+          convertResult
+              .get(ERROR_TAG)
+              
.setCoder(org.apache.beam.sdk.coders.RowCoder.of(dynamicErrorSchema));
+
+      // Configure DatadogIO.Write
+      DatadogIO.Write.Builder builder =
+          DatadogIO.writeBuilder(configuration.getMinBatchCount())

Review Comment:
   ![medium](https://www.gstatic.com/codereviewagent/medium-priority.svg)
   
   The `minBatchCount` is passed directly to `writeBuilder`, but it is marked 
as `@Nullable` in the configuration. If `DatadogIO.writeBuilder` expects a 
primitive `int` or a non-null `Integer`, this will cause a 
`NullPointerException`. It is safer to use a default value or set it via a 
`withMinBatchCount` method if available, similar to how other parameters are 
handled.
   
   ```java
         DatadogIO.Write.Builder builder =
             DatadogIO.writeBuilder()
                 .withUrl(configuration.getUrl())
                 .withApiKey(configuration.getApiKey());
   
         Integer minBatchCount = configuration.getMinBatchCount();
         if (minBatchCount != null) {
           builder = builder.withMinBatchCount(minBatchCount);
         }
   ```



##########
sdks/java/io/datadog/src/main/java/org/apache/beam/sdk/io/datadog/DatadogWriteSchemaTransformConfiguration.java:
##########
@@ -0,0 +1,116 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.io.datadog;
+
+import static 
org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkArgument;
+
+import com.google.auto.value.AutoValue;
+import javax.annotation.Nullable;
+import org.apache.beam.sdk.schemas.AutoValueSchema;
+import org.apache.beam.sdk.schemas.annotations.DefaultSchema;
+import org.apache.beam.sdk.schemas.annotations.SchemaFieldDescription;
+import org.apache.beam.sdk.schemas.transforms.providers.ErrorHandling;
+import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Strings;
+
+/**
+ * Configuration for writing to Datadog.
+ *
+ * <p>This class is meant to be used with {@link 
DatadogWriteSchemaTransformProvider}.
+ */
+@DefaultSchema(AutoValueSchema.class)
+@AutoValue
+public abstract class DatadogWriteSchemaTransformConfiguration {
+
+  public void validate() {
+    String invalidConfigMessage = "Invalid Datadog Write configuration: ";
+    checkArgument(
+        !Strings.isNullOrEmpty(getUrl()), invalidConfigMessage + "url must be 
specified.");
+    checkArgument(
+        !Strings.isNullOrEmpty(getApiKey()), invalidConfigMessage + "apiKey 
must be specified.");

Review Comment:
   ![medium](https://www.gstatic.com/codereviewagent/medium-priority.svg)
   
   The null checks for `url` and `apiKey` are redundant because these fields 
are not marked as `@Nullable`, and `AutoValue` will automatically throw an 
`IllegalStateException` during `build()` if they are null. However, checking 
for empty strings is still valid. Consider simplifying this or ensuring 
consistency with the expected exception type in tests.



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