HBASE-24228 Merge the code in hbase-hadoop2-compat module to hbase-hadoop-compat (#1563)

Signed-off-by: stack <stack@apache.org>

hbase-assembly/pom.xml

@@ -236,10 +236,6 @@
         </exclusion>
       </exclusions>
     </dependency>
-    <dependency>
-      <groupId>org.apache.hbase</groupId>
-      <artifactId>${compat.module}</artifactId>
-    </dependency>
     <dependency>
       <groupId>org.apache.hbase</groupId>
       <artifactId>hbase-shell</artifactId>

hbase-assembly/src/main/assembly/hadoop-three-compat.xml

@@ -41,7 +41,6 @@
         <include>org.apache.hbase:hbase-examples</include>
         <include>org.apache.hbase:hbase-external-blockcache</include>
         <include>org.apache.hbase:hbase-hadoop-compat</include>
-        <include>org.apache.hbase:hbase-hadoop2-compat</include>
         <include>org.apache.hbase:hbase-http</include>
         <include>org.apache.hbase:hbase-it</include>
         <include>org.apache.hbase:hbase-mapreduce</include>

hbase-assembly/src/main/assembly/hadoop-two-compat.xml

@@ -41,7 +41,6 @@
         <include>org.apache.hbase:hbase-examples</include>
         <include>org.apache.hbase:hbase-external-blockcache</include>
         <include>org.apache.hbase:hbase-hadoop-compat</include>
-        <include>org.apache.hbase:hbase-hadoop2-compat</include>
         <include>org.apache.hbase:hbase-http</include>
         <include>org.apache.hbase:hbase-it</include>
         <include>org.apache.hbase:hbase-mapreduce</include>

hbase-client/pom.xml

@@ -73,10 +73,6 @@
     <dependency>
       <groupId>org.apache.hbase</groupId>
       <artifactId>hbase-hadoop-compat</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.apache.hbase</groupId>
-      <artifactId>hbase-hadoop2-compat</artifactId>
       <exclusions>
         <!-- We don't need MR support classes here. -->
         <exclusion>

hbase-endpoint/pom.xml

@@ -95,18 +95,6 @@
       <type>test-jar</type>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>org.apache.hbase</groupId>
-      <artifactId>${compat.module}</artifactId>
-      <version>${project.version}</version>
-    </dependency>
-    <dependency>
-      <groupId>org.apache.hbase</groupId>
-      <artifactId>${compat.module}</artifactId>
-      <version>${project.version}</version>
-      <type>test-jar</type>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.apache.hbase</groupId>
       <artifactId>hbase-protocol-shaded</artifactId>

hbase-hadoop-compat/pom.xml

@@ -70,17 +70,42 @@
         <type>test-jar</type>
         <scope>test</scope>
       </dependency>
+      <dependency>
+        <groupId>org.apache.hbase</groupId>
+        <artifactId>hbase-common</artifactId>
+      </dependency>
       <dependency>
         <groupId>org.apache.hbase</groupId>
         <artifactId>hbase-common</artifactId>
         <type>test-jar</type>
         <scope>test</scope>
       </dependency>
+      <dependency>
+        <groupId>org.apache.hbase</groupId>
+        <artifactId>hbase-metrics</artifactId>
+      </dependency>
+      <dependency>
+        <groupId>org.apache.hbase</groupId>
+        <artifactId>hbase-metrics-api</artifactId>
+      </dependency>
       <dependency>
         <groupId>org.apache.hbase.thirdparty</groupId>
         <artifactId>hbase-shaded-miscellaneous</artifactId>
       </dependency>
-      <!-- General dependencies -->
+      <dependency>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-mapreduce-client-core</artifactId>
+        <exclusions>
+          <exclusion>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+          </exclusion>
+        </exclusions>
+      </dependency>
+      <dependency>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-common</artifactId>
+      </dependency>
       <dependency>
         <groupId>org.slf4j</groupId>
         <artifactId>slf4j-api</artifactId>
@@ -89,6 +114,18 @@
         <groupId>org.apache.hbase</groupId>
         <artifactId>hbase-metrics-api</artifactId>
       </dependency>
+      <dependency>
+      <!--
+        a missing transitive dependency on JDK9+ (obsoleted by Hadoop-3.3.0+, HADOOP-15775)
+      -->
+        <groupId>javax.activation</groupId>
+        <artifactId>javax.activation-api</artifactId>
+        <scope>runtime</scope>
+      </dependency>
+      <dependency>
+        <groupId>org.apache.commons</groupId>
+        <artifactId>commons-lang3</artifactId>
+      </dependency>
       <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>

hbase-hadoop-compat/src/test/java/org/apache/hadoop/hbase/master/TestMetricsMasterSourceFactory.java

@@ -17,6 +17,9 @@
  */
 package org.apache.hadoop.hbase.master;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.MetricsTests;
@@ -26,19 +29,18 @@ import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
 /**
- *  Test for the CompatibilitySingletonFactory and building MetricsMasterSource
+ * Test for the CompatibilitySingletonFactory and building MetricsMasterSource
  */
-@Category({MetricsTests.class, SmallTests.class})
+@Category({ MetricsTests.class, SmallTests.class })
 public class TestMetricsMasterSourceFactory {
 
   @ClassRule
   public static final HBaseClassTestRule CLASS_RULE =
-      HBaseClassTestRule.forClass(TestMetricsMasterSourceFactory.class);
+    HBaseClassTestRule.forClass(TestMetricsMasterSourceFactory.class);
-
-  @Test(expected=RuntimeException.class)
-  public void testGetInstanceNoHadoopCompat() throws Exception {
-    //This should throw an exception because there is no compat lib on the class path.
-    CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class);
 
+  @Test
+  public void testGetInstance() throws Exception {
+    assertThat(CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class),
+      instanceOf(MetricsMasterSourceFactoryImpl.class));
   }
 }

hbase-hadoop-compat/src/test/java/org/apache/hadoop/hbase/regionserver/TestMetricsRegionServerSourceFactory.java

@@ -17,8 +17,13 @@
  */
 package org.apache.hadoop.hbase.regionserver;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.master.MetricsMasterSourceFactory;
+import org.apache.hadoop.hbase.master.MetricsMasterSourceFactoryImpl;
 import org.apache.hadoop.hbase.testclassification.MetricsTests;
 import org.apache.hadoop.hbase.testclassification.SmallTests;
 import org.junit.ClassRule;
@@ -26,19 +31,18 @@ import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
 /**
- *  Test for the CompatibilitySingletonFactory and building MetricsRegionServerSource
+ * Test for the CompatibilitySingletonFactory and building MetricsRegionServerSource
  */
-@Category({MetricsTests.class, SmallTests.class})
+@Category({ MetricsTests.class, SmallTests.class })
 public class TestMetricsRegionServerSourceFactory {
 
   @ClassRule
   public static final HBaseClassTestRule CLASS_RULE =
-      HBaseClassTestRule.forClass(TestMetricsRegionServerSourceFactory.class);
+    HBaseClassTestRule.forClass(TestMetricsRegionServerSourceFactory.class);
-
-  @Test(expected=RuntimeException.class)
-  public void testGetInstanceNoHadoopCompat() throws Exception {
-    //This should throw an exception because there is no compat lib on the class path.
-    CompatibilitySingletonFactory.getInstance(MetricsRegionServerSourceFactory.class);
 
+  @Test
+  public void testGetInstance() throws Exception {
+    assertThat(CompatibilitySingletonFactory.getInstance(MetricsMasterSourceFactory.class),
+      instanceOf(MetricsMasterSourceFactoryImpl.class));
   }
 }

hbase-hadoop-compat/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestMetricsWALSource.java

@@ -17,6 +17,9 @@
  */
 package org.apache.hadoop.hbase.regionserver.wal;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.MetricsTests;
@@ -25,17 +28,17 @@ import org.junit.ClassRule;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
-@Category({MetricsTests.class, SmallTests.class})
+@Category({ MetricsTests.class, SmallTests.class })
 public class TestMetricsWALSource {
 
   @ClassRule
   public static final HBaseClassTestRule CLASS_RULE =
-      HBaseClassTestRule.forClass(TestMetricsWALSource.class);
+    HBaseClassTestRule.forClass(TestMetricsWALSource.class);
-
-  @Test(expected=RuntimeException.class)
-  public void testGetInstanceNoHadoopCompat() throws Exception {
-    //This should throw an exception because there is no compat lib on the class path.
-    CompatibilitySingletonFactory.getInstance(MetricsWALSource.class);
 
+  @Test
+  public void testGetInstance() throws Exception {
+    // This should throw an exception because there is no compat lib on the class path.
+    assertThat(CompatibilitySingletonFactory.getInstance(MetricsWALSource.class),
+      instanceOf(MetricsWALSourceImpl.class));
   }
 }

hbase-hadoop-compat/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestMetricsReplicationSourceFactory.java

@@ -17,6 +17,9 @@
  */
 package org.apache.hadoop.hbase.replication.regionserver;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.MetricsTests;
@@ -26,18 +29,18 @@ import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
 /**
- *  Test for the CompatibilitySingletonFactory and building MetricsReplicationSource
+ * Test for the CompatibilitySingletonFactory and building MetricsReplicationSource
  */
-@Category({MetricsTests.class, SmallTests.class})
+@Category({ MetricsTests.class, SmallTests.class })
 public class TestMetricsReplicationSourceFactory {
 
   @ClassRule
   public static final HBaseClassTestRule CLASS_RULE =
-      HBaseClassTestRule.forClass(TestMetricsReplicationSourceFactory.class);
+    HBaseClassTestRule.forClass(TestMetricsReplicationSourceFactory.class);
 
-  @Test(expected=RuntimeException.class)
+  @Test
-  public void testGetInstanceNoHadoopCompat() throws Exception {
+  public void testGetInstance() throws Exception {
-    //This should throw an exception because there is no compat lib on the class path.
+    assertThat(CompatibilitySingletonFactory.getInstance(MetricsReplicationSource.class),
-    CompatibilitySingletonFactory.getInstance(MetricsReplicationSource.class);
+      instanceOf(MetricsReplicationSourceImpl.class));
   }
 }

hbase-hadoop-compat/src/test/java/org/apache/hadoop/hbase/rest/TestMetricsRESTSource.java

@@ -17,6 +17,9 @@
  */
 package org.apache.hadoop.hbase.rest;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
+
 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
 import org.apache.hadoop.hbase.HBaseClassTestRule;
 import org.apache.hadoop.hbase.testclassification.MetricsTests;
@@ -26,18 +29,18 @@ import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
 /**
- *   Test of Rest Metrics Source interface.
+ * Test of Rest Metrics Source interface.
  */
-@Category({MetricsTests.class, SmallTests.class})
+@Category({ MetricsTests.class, SmallTests.class })
 public class TestMetricsRESTSource {
 
   @ClassRule
   public static final HBaseClassTestRule CLASS_RULE =
-      HBaseClassTestRule.forClass(TestMetricsRESTSource.class);
+    HBaseClassTestRule.forClass(TestMetricsRESTSource.class);
 
-  @Test(expected=RuntimeException.class)
+  @Test
   public void testGetInstanceNoHadoopCompat() throws Exception {
-    //This should throw an exception because there is no compat lib on the class path.
+    assertThat(CompatibilitySingletonFactory.getInstance(MetricsRESTSource.class),
-    CompatibilitySingletonFactory.getInstance(MetricsRESTSource.class);
+      instanceOf(MetricsRESTSourceImpl.class));
   }
 }