[Avro] Use "extensions/avro" instead of avro from"core" in Java SDK m…

…odules (#24992) * Use "extensions/avro" instead of avro from"core" in Java SDK modules * Use "extensions/avro" instead of avro from"core" in sdks/java/io/kafka * Use "extensions/avro" instead of avro from"core" in sdks/java/io/google-cloud-platform * Resolve rebase conflicts * Use "extensions/avro" for Dataflow runner * Use "extensions/avro" for core-construction runner * Add avro extension as a dependency for direct runner * Copy Avro-related tests to Avro extension * Address review comments * Depend javaPreCommit on extensions:avro * Address review comments * Revert CountingSource.java * Up-to-date Avro usages
apache · Feb 22, 2023 · 95a6566 · 95a6566
1 parent d8e5047
commit 95a6566
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diff --git a/CHANGES.md b/CHANGES.md
@@ -61,6 +61,7 @@
 * RunInference PTransform will accept model paths as SideInputs in Python SDK. ([#24042](https://github.com/apache/beam/issues/24042))
 * RunInference supports ONNX runtime in Python SDK ([#22972](https://github.com/apache/beam/issues/22972))
 * Tensorflow Model Handler for RunInference in Python SDK ([#25366](https://github.com/apache/beam/issues/25366))
+* Java SDK modules migrated to use `:sdks:java:extensions:avro` ([#24748](https://github.com/apache/beam/issues/24748))
 
 ## I/Os
 

diff --git a/build.gradle.kts b/build.gradle.kts
@@ -263,6 +263,7 @@ tasks.register("javaPreCommit") {
   dependsOn(":sdks:java:expansion-service:build")
   dependsOn(":sdks:java:expansion-service:app:build")
   dependsOn(":sdks:java:extensions:arrow:build")
+  dependsOn(":sdks:java:extensions:avro:build")
   dependsOn(":sdks:java:extensions:euphoria:build")
   dependsOn(":sdks:java:extensions:google-cloud-platform-core:build")
   dependsOn(":sdks:java:extensions:jackson:build")

diff --git a/examples/java/build.gradle b/examples/java/build.gradle
@@ -56,6 +56,7 @@ dependencies {
   implementation library.java.vendored_guava_26_0_jre
   implementation library.java.kafka_clients
   implementation project(path: ":sdks:java:core", configuration: "shadow")
+  implementation project(":sdks:java:extensions:avro")
   implementation project(":sdks:java:extensions:google-cloud-platform-core")
   implementation project(":sdks:java:extensions:python")
   implementation project(":sdks:java:io:google-cloud-platform")

diff --git a/examples/java/src/main/java/org/apache/beam/examples/complete/AutoComplete.java b/examples/java/src/main/java/org/apache/beam/examples/complete/AutoComplete.java
@@ -39,8 +39,8 @@
 import org.apache.beam.examples.common.ExampleUtils;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.PipelineResult;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.io.TextIO;
 import org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO;
 import org.apache.beam.sdk.io.gcp.datastore.DatastoreIO;

diff --git a/examples/java/src/main/java/org/apache/beam/examples/complete/TrafficMaxLaneFlow.java b/examples/java/src/main/java/org/apache/beam/examples/complete/TrafficMaxLaneFlow.java
@@ -49,8 +49,8 @@
 import org.apache.beam.examples.common.ExampleUtils;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.PipelineResult;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.io.TextIO;
 import org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO;
 import org.apache.beam.sdk.options.Default;

diff --git a/examples/java/src/main/java/org/apache/beam/examples/complete/TrafficRoutes.java b/examples/java/src/main/java/org/apache/beam/examples/complete/TrafficRoutes.java
@@ -55,8 +55,8 @@
 import org.apache.beam.examples.common.ExampleUtils;
 import org.apache.beam.sdk.Pipeline;
 import org.apache.beam.sdk.PipelineResult;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.io.TextIO;
 import org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO;
 import org.apache.beam.sdk.options.Default;

diff --git a/examples/java/src/main/java/org/apache/beam/examples/complete/game/UserScore.java b/examples/java/src/main/java/org/apache/beam/examples/complete/game/UserScore.java
@@ -23,8 +23,8 @@
 import org.apache.avro.reflect.Nullable;
 import org.apache.beam.examples.complete.game.utils.WriteToText;
 import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.io.TextIO;
 import org.apache.beam.sdk.metrics.Counter;
 import org.apache.beam.sdk.metrics.Metrics;

diff --git a/...ava/src/main/java/org/apache/beam/examples/complete/kafkatopubsub/avro/AvroDataClass.java b/...ava/src/main/java/org/apache/beam/examples/complete/kafkatopubsub/avro/AvroDataClass.java
@@ -17,8 +17,8 @@
  */
 package org.apache.beam.examples.complete.kafkatopubsub.avro;
 
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 
 /**
  * Example of AVRO serialization class. To configure your AVRO schema, change this class to

diff --git a/...main/java/org/apache/beam/examples/complete/kafkatopubsub/transforms/FormatTransform.java b/...main/java/org/apache/beam/examples/complete/kafkatopubsub/transforms/FormatTransform.java
@@ -23,10 +23,10 @@
 import org.apache.beam.examples.complete.kafkatopubsub.avro.AvroDataClassKafkaAvroDeserializer;
 import org.apache.beam.examples.complete.kafkatopubsub.kafka.consumer.SslConsumerFactoryFn;
 import org.apache.beam.examples.complete.kafkatopubsub.options.KafkaToPubsubOptions;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.NullableCoder;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.io.gcp.pubsub.PubsubIO;
 import org.apache.beam.sdk.io.gcp.pubsub.PubsubMessage;
 import org.apache.beam.sdk.io.kafka.KafkaIO;

diff --git a/examples/java/src/main/java/org/apache/beam/examples/snippets/Snippets.java b/examples/java/src/main/java/org/apache/beam/examples/snippets/Snippets.java
@@ -45,10 +45,10 @@
 import javax.annotation.Nullable;
 import org.apache.avro.generic.GenericRecord;
 import org.apache.beam.sdk.Pipeline;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.DefaultCoder;
 import org.apache.beam.sdk.coders.DoubleCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.extensions.ml.AnnotateText;
 import org.apache.beam.sdk.io.Compression;
 import org.apache.beam.sdk.io.FileIO;

diff --git a/...ain/java/org/apache/beam/examples/snippets/transforms/io/gcp/bigquery/BigQueryMyData.java b/...ain/java/org/apache/beam/examples/snippets/transforms/io/gcp/bigquery/BigQueryMyData.java
@@ -30,8 +30,8 @@
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 
 @SuppressWarnings({
   "nullness" // TODO(https://github.com/apache/beam/issues/20497)

diff --git a/examples/java/src/main/java/org/apache/beam/examples/subprocess/utils/ExecutableFile.java b/examples/java/src/main/java/org/apache/beam/examples/subprocess/utils/ExecutableFile.java
@@ -18,8 +18,8 @@
 package org.apache.beam.examples.subprocess.utils;
 
 import org.apache.beam.examples.subprocess.configuration.SubProcessConfiguration;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.DefaultCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 
 /** Contains the configuration for the external library. */
 @DefaultCoder(AvroCoder.class)

diff --git a/examples/java/src/test/java/org/apache/beam/examples/complete/game/LeaderBoardTest.java b/examples/java/src/test/java/org/apache/beam/examples/complete/game/LeaderBoardTest.java
@@ -24,7 +24,7 @@
 import org.apache.beam.examples.complete.game.LeaderBoard.CalculateTeamScores;
 import org.apache.beam.examples.complete.game.LeaderBoard.CalculateUserScores;
 import org.apache.beam.examples.complete.game.UserScore.GameActionInfo;
-import org.apache.beam.sdk.coders.AvroCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.options.PipelineOptionsFactory;
 import org.apache.beam.sdk.testing.PAssert;
 import org.apache.beam.sdk.testing.TestPipeline;

diff --git a/...ples/java/src/test/java/org/apache/beam/examples/complete/game/StatefulTeamScoreTest.java b/...ples/java/src/test/java/org/apache/beam/examples/complete/game/StatefulTeamScoreTest.java
@@ -19,9 +19,9 @@
 
 import org.apache.beam.examples.complete.game.StatefulTeamScore.UpdateTeamScoreFn;
 import org.apache.beam.examples.complete.game.UserScore.GameActionInfo;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.KvCoder;
 import org.apache.beam.sdk.coders.StringUtf8Coder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.testing.PAssert;
 import org.apache.beam.sdk.testing.TestPipeline;
 import org.apache.beam.sdk.testing.TestStream;

diff --git a/examples/kotlin/build.gradle b/examples/kotlin/build.gradle
@@ -55,6 +55,7 @@ dependencies {
   // Add the dependency that sdks:java:core that is marked as provided
   implementation library.java.hamcrest
   permitUnusedDeclared library.java.hamcrest
+  implementation project(":sdks:java:extensions:avro")
   implementation project(":sdks:java:extensions:google-cloud-platform-core")
   implementation project(":sdks:java:io:google-cloud-platform")
   implementation library.java.avro

diff --git a/examples/kotlin/src/main/java/org/apache/beam/examples/kotlin/snippets/Snippets.kt b/examples/kotlin/src/main/java/org/apache/beam/examples/kotlin/snippets/Snippets.kt
@@ -23,7 +23,7 @@ import com.google.api.services.bigquery.model.*
 import com.google.common.collect.ImmutableList
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings
 import org.apache.beam.sdk.Pipeline
-import org.apache.beam.sdk.coders.AvroCoder
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder
 import org.apache.beam.sdk.coders.DefaultCoder
 import org.apache.beam.sdk.coders.DoubleCoder
 import org.apache.beam.sdk.io.gcp.bigquery.BigQueryIO

diff --git a/runners/core-construction-java/build.gradle b/runners/core-construction-java/build.gradle
@@ -53,6 +53,7 @@ dependencies {
   implementation project(path: ":model:pipeline", configuration: "shadow")
   implementation project(path: ":model:job-management", configuration: "shadow")
   implementation project(path: ":sdks:java:core", configuration: "shadow")
+  implementation project(path: ":sdks:java:extensions:avro")
   implementation project(path: ":sdks:java:fn-execution")
   implementation library.java.vendored_grpc_1_48_1
   implementation library.java.vendored_guava_26_0_jre
@@ -73,5 +74,6 @@ dependencies {
   testImplementation library.java.jackson_dataformat_yaml
   testImplementation project(path: ":model:fn-execution", configuration: "shadow")
   testImplementation project(path: ":sdks:java:core", configuration: "testRuntimeMigration")
+  testImplementation project(path: ":sdks:java:extensions:avro")
   testRuntimeOnly library.java.slf4j_jdk14
 }
diff --git a/...va/src/main/java/org/apache/beam/runners/core/construction/AvroGenericCoderRegistrar.java b/...va/src/main/java/org/apache/beam/runners/core/construction/AvroGenericCoderRegistrar.java
@@ -19,8 +19,8 @@
 
 import com.google.auto.service.AutoService;
 import java.util.Map;
-import org.apache.beam.sdk.coders.AvroGenericCoder;
 import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroGenericCoder;
 import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.ImmutableMap;
 
 /** Coder registrar for AvroGenericCoder. */

diff --git a/...a/src/main/java/org/apache/beam/runners/core/construction/AvroGenericCoderTranslator.java b/...a/src/main/java/org/apache/beam/runners/core/construction/AvroGenericCoderTranslator.java
@@ -21,8 +21,8 @@
 import java.util.List;
 import org.apache.avro.Schema;
 import org.apache.beam.runners.core.construction.CoderTranslation.TranslationContext;
-import org.apache.beam.sdk.coders.AvroGenericCoder;
 import org.apache.beam.sdk.coders.Coder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroGenericCoder;
 import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Charsets;
 
 /** Coder translator for AvroGenericCoder. */

diff --git a/...on-java/src/test/java/org/apache/beam/runners/core/construction/CoderTranslationTest.java b/...on-java/src/test/java/org/apache/beam/runners/core/construction/CoderTranslationTest.java
@@ -33,7 +33,6 @@
 import org.apache.beam.model.pipeline.v1.RunnerApi.Components;
 import org.apache.beam.runners.core.construction.CoderTranslation.TranslationContext;
 import org.apache.beam.sdk.coders.AtomicCoder;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.BooleanCoder;
 import org.apache.beam.sdk.coders.ByteArrayCoder;
 import org.apache.beam.sdk.coders.Coder;
@@ -48,6 +47,7 @@
 import org.apache.beam.sdk.coders.StringUtf8Coder;
 import org.apache.beam.sdk.coders.TimestampPrefixingWindowCoder;
 import org.apache.beam.sdk.coders.VarLongCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.schemas.Schema;
 import org.apache.beam.sdk.schemas.Schema.Field;
 import org.apache.beam.sdk.schemas.Schema.FieldType;

diff --git a/runners/direct-java/build.gradle b/runners/direct-java/build.gradle
@@ -26,7 +26,8 @@ def dependOnProjects = [":runners:core-construction-java",
                         ":runners:core-java",
                         ":runners:local-java",
                         ":runners:java-fn-execution",
-                        ":sdks:java:fn-execution"
+                        ":sdks:java:fn-execution",
+                        ":sdks:java:extensions:avro"
                         ]
 
 applyJavaNature(
@@ -96,6 +97,7 @@ dependencies {
   permitUnusedDeclared library.java.vendored_grpc_1_48_1
   permitUnusedDeclared project(":runners:java-fn-execution")
   permitUnusedDeclared project(":sdks:java:fn-execution")
+  permitUnusedDeclared project(":sdks:java:extensions:avro")
   examplesJavaIntegrationTest project(project.path)
   examplesJavaIntegrationTest project(":examples:java")
   examplesJavaIntegrationTest project(path: ":examples:java", configuration: "testRuntimeMigration")

diff --git a/runners/google-cloud-dataflow-java/build.gradle b/runners/google-cloud-dataflow-java/build.gradle
@@ -81,6 +81,7 @@ dependencies {
   implementation library.java.vendored_guava_26_0_jre
   implementation project(path: ":model:pipeline", configuration: "shadow")
   implementation project(path: ":sdks:java:core", configuration: "shadow")
+  implementation project(":sdks:java:extensions:avro")
   implementation project(":sdks:java:extensions:google-cloud-platform-core")
   implementation project(":sdks:java:io:kafka")
   implementation project(":sdks:java:io:google-cloud-platform")
@@ -115,6 +116,7 @@ dependencies {
   testImplementation library.java.junit
   testImplementation project(path: ":sdks:java:io:google-cloud-platform", configuration: "testRuntimeMigration")
   testImplementation project(path: ":sdks:java:core", configuration: "shadowTest")
+  testImplementation project(path: ":sdks:java:extensions:avro")
   testImplementation project(path: ":sdks:java:extensions:google-cloud-platform-core", configuration: "testRuntimeMigration")
   testImplementation project(path: ":runners:core-construction-java", configuration: "testRuntimeMigration")
   testImplementation project(path: ":sdks:java:extensions:python", configuration: "testRuntimeMigration")

diff --git a/...a/src/main/java/org/apache/beam/runners/dataflow/util/AvroCoderCloudObjectTranslator.java b/...a/src/main/java/org/apache/beam/runners/dataflow/util/AvroCoderCloudObjectTranslator.java
@@ -19,7 +19,7 @@
 
 import org.apache.avro.Schema;
 import org.apache.beam.runners.core.construction.SdkComponents;
-import org.apache.beam.sdk.coders.AvroCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 
 /** A {@link CloudObjectTranslator} for {@link AvroCoder}. */
 @SuppressWarnings({

diff --git a/...d-dataflow-java/src/test/java/org/apache/beam/runners/dataflow/util/CloudObjectsTest.java b/...d-dataflow-java/src/test/java/org/apache/beam/runners/dataflow/util/CloudObjectsTest.java
@@ -36,7 +36,6 @@
 import java.util.Set;
 import org.apache.avro.generic.GenericRecord;
 import org.apache.beam.runners.core.construction.SdkComponents;
-import org.apache.beam.sdk.coders.AvroCoder;
 import org.apache.beam.sdk.coders.ByteArrayCoder;
 import org.apache.beam.sdk.coders.Coder;
 import org.apache.beam.sdk.coders.CoderException;
@@ -54,6 +53,7 @@
 import org.apache.beam.sdk.coders.StructuredCoder;
 import org.apache.beam.sdk.coders.TimestampPrefixingWindowCoder;
 import org.apache.beam.sdk.coders.VarLongCoder;
+import org.apache.beam.sdk.extensions.avro.coders.AvroCoder;
 import org.apache.beam.sdk.schemas.Schema;
 import org.apache.beam.sdk.schemas.Schema.FieldType;
 import org.apache.beam.sdk.schemas.SchemaCoder;

diff --git a/runners/google-cloud-dataflow-java/worker/build.gradle b/runners/google-cloud-dataflow-java/worker/build.gradle
@@ -52,6 +52,7 @@ def sdk_provided_shaded_project_dependencies = [
 ]
 def sdk_provided_project_dependencies = [
         ":runners:google-cloud-dataflow-java",
+        ":sdks:java:extensions:avro",
         ":sdks:java:extensions:google-cloud-platform-core",
         ":sdks:java:io:google-cloud-platform",
 ]

diff --git a/...low-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/AvroByteReader.java b/...low-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/AvroByteReader.java
@@ -29,8 +29,8 @@
 import org.apache.avro.Schema;
 import org.apache.beam.runners.dataflow.worker.util.common.worker.NativeReader;
 import org.apache.beam.sdk.coders.Coder;
-import org.apache.beam.sdk.io.AvroSource;
-import org.apache.beam.sdk.io.AvroSource.AvroReader;
+import org.apache.beam.sdk.extensions.avro.io.AvroSource;
+import org.apache.beam.sdk.extensions.avro.io.AvroSource.AvroReader;
 import org.apache.beam.sdk.io.BoundedSource;
 import org.apache.beam.sdk.io.FileSystems;
 import org.apache.beam.sdk.io.OffsetBasedSource;

diff --git a/...va/org/apache/beam/runners/spark/structuredstreaming/translation/SparkSessionFactory.java b/...va/org/apache/beam/runners/spark/structuredstreaming/translation/SparkSessionFactory.java
@@ -33,8 +33,6 @@
 import org.apache.beam.runners.core.construction.resources.PipelineResources;
 import org.apache.beam.runners.spark.structuredstreaming.SparkStructuredStreamingPipelineOptions;
 import org.apache.beam.runners.spark.structuredstreaming.translation.batch.functions.SideInputValues;
-import org.apache.beam.sdk.coders.AvroCoder;
-import org.apache.beam.sdk.coders.AvroGenericCoder;
 import org.apache.beam.sdk.coders.BigDecimalCoder;
 import org.apache.beam.sdk.coders.BigEndianIntegerCoder;
 import org.apache.beam.sdk.coders.BigEndianLongCoder;
@@ -227,9 +225,11 @@ public void registerClasses(Kryo kryo) {
       kryo.register(SideInputValues.ByWindow.class);
       kryo.register(SideInputValues.Global.class);
 
+      // avro coders
+      tryToRegister(kryo, "org.apache.beam.sdk.extensions.avro.coders.AvroCoder");
+      tryToRegister(kryo, "org.apache.beam.sdk.extensions.avro.coders.AvroGenericCoder");
+
       // standard coders of org.apache.beam.sdk.coders
-      kryo.register(AvroCoder.class);
-      kryo.register(AvroGenericCoder.class);
       kryo.register(BigDecimalCoder.class);
       kryo.register(BigEndianIntegerCoder.class);
       kryo.register(BigEndianLongCoder.class);
@@ -283,5 +283,13 @@ public void registerClasses(Kryo kryo) {
       kryo.register(TupleTag.class);
       kryo.register(TupleTagList.class);
     }
+
+    private void tryToRegister(Kryo kryo, String className) {
+      try {
+        kryo.register(Class.forName(className));
+      } catch (ClassNotFoundException e) {
+        LOG.info("Class {}} was not found on classpath", className);
+      }
+    }
   }
 }
diff --git a/runners/spark/spark_runner.gradle b/runners/spark/spark_runner.gradle
@@ -161,6 +161,7 @@ dependencies {
   implementation project(":runners:java-fn-execution")
   implementation project(":runners:java-job-service")
   implementation project(":sdks:java:extensions:google-cloud-platform-core")
+  implementation project(":sdks:java:extensions:avro")
   implementation library.java.jackson_annotations
   implementation library.java.slf4j_api
   implementation library.java.joda_time
@@ -191,6 +192,7 @@ dependencies {
   testImplementation project(path: ":sdks:java:core", configuration: "shadowTest")
   // SparkStateInternalsTest extends abstract StateInternalsTest
   testImplementation project(path: ":runners:core-java", configuration: "testRuntimeMigration")
+  testImplementation project(path: ":sdks:java:extensions:avro", configuration: "testRuntimeMigration")
   testImplementation project(":sdks:java:harness")
   testImplementation library.java.avro
   testImplementation "org.apache.kafka:kafka_$spark_scala_version:2.4.1"

diff --git a/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java b/runners/spark/src/test/java/org/apache/beam/runners/spark/io/AvroPipelineTest.java
@@ -30,7 +30,7 @@
 import org.apache.avro.generic.GenericDatumReader;
 import org.apache.avro.generic.GenericDatumWriter;
 import org.apache.avro.generic.GenericRecord;
-import org.apache.beam.sdk.io.AvroIO;
+import org.apache.beam.sdk.extensions.avro.io.AvroIO;
 import org.apache.beam.sdk.testing.TestPipeline;
 import org.apache.beam.sdk.values.PCollection;
 import org.apache.beam.vendor.guava.v26_0_jre.com.google.common.collect.Lists;

diff --git a/sdks/java/core/src/main/java/org/apache/beam/sdk/coders/DefaultCoder.java b/sdks/java/core/src/main/java/org/apache/beam/sdk/coders/DefaultCoder.java
@@ -74,7 +74,7 @@ public List<CoderProvider> getCoderProviders() {
      * A {@link CoderProvider} that uses the {@code @DefaultCoder} annotation to provide {@link
      * CoderProvider coder providers} that create {@link Coder}s.
      */
-    static class DefaultCoderProvider extends CoderProvider {
+    public static class DefaultCoderProvider extends CoderProvider {
       private static final Logger LOG = LoggerFactory.getLogger(DefaultCoderProvider.class);
 
       /**