HADOOP-14891. Remove references to Guava Objects.toStringHelper. Contributed by Jonathan Eagles

(cherry picked from commit 0aac5af6e1a2b265cc8faa99b386276ed14faeda)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/AbstractMetric.java

@@ -84,9 +84,12 @@ public abstract class AbstractMetric implements MetricsInfo {
   }
 
   @Override public String toString() {
-    return Objects.toStringHelper(this)
-        .add("info", info)
-        .add("value", value())
-        .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{info=");
+    sb.append(info);
+    sb.append(", value=");
+    sb.append(value());
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/MetricsTag.java

@@ -80,9 +80,12 @@ public class MetricsTag implements MetricsInfo {
   }
 
   @Override public String toString() {
-    return Objects.toStringHelper(this)
-        .add("info", info)
-        .add("value", value())
-        .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{info=");
+    sb.append(info);
+    sb.append(", value=");
+    sb.append(value());
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/AbstractMetricsRecord.java

@@ -43,12 +43,18 @@ abstract class AbstractMetricsRecord implements MetricsRecord {
   }
 
   @Override public String toString() {
-    return Objects.toStringHelper(this)
-        .add("timestamp", timestamp())
-        .add("name", name())
-        .add("description", description())
-        .add("tags", tags())
-        .add("metrics", Iterables.toString(metrics()))
-        .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{timestamp=");
+    sb.append(timestamp());
+    sb.append(", name=");
+    sb.append(name());
+    sb.append(", description=");
+    sb.append(description());
+    sb.append(", tags=");
+    sb.append(tags());
+    sb.append(", metrics=");
+    sb.append(Iterables.toString(metrics()));
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/impl/MsInfo.java

@@ -18,8 +18,6 @@
 
 package org.apache.hadoop.metrics2.impl;
 
-import com.google.common.base.Objects;
-
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.metrics2.MetricsInfo;
 
@@ -48,8 +46,12 @@ public enum MsInfo implements MetricsInfo {
   }
 
   @Override public String toString() {
-    return Objects.toStringHelper(this)
-        .add("name", name()).add("description", desc)
-        .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{name=");
+    sb.append(name());
+    sb.append(", description=");
+    sb.append(desc);
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/lib/MetricsInfoImpl.java

@@ -55,8 +55,12 @@ class MetricsInfoImpl implements MetricsInfo {
   }
 
   @Override public String toString() {
-    return Objects.toStringHelper(this)
-        .add("name", name).add("description", description)
-        .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{name=");
+    sb.append(name);
+    sb.append(", description=");
+    sb.append(description);
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/lib/MetricsRegistry.java

@@ -22,7 +22,6 @@ import java.util.Collection;
 import java.util.Map;
 
 import com.google.common.collect.Maps;
-import com.google.common.base.Objects;
 
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.classification.InterfaceStability;
@@ -416,8 +415,14 @@ public class MetricsRegistry {
   }
 
   @Override public String toString() {
-    return Objects.toStringHelper(this)
-        .add("info", metricsInfo).add("tags", tags()).add("metrics", metrics())
-        .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{info=");
+    sb.append(metricsInfo);
+    sb.append(", tags=");
+    sb.append(tags());
+    sb.append(", metrics=");
+    sb.append(metrics());
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/source/JvmMetricsInfo.java

@@ -18,8 +18,6 @@
 
 package org.apache.hadoop.metrics2.source;
 
-import com.google.common.base.Objects;
-
 import org.apache.hadoop.classification.InterfaceAudience;
 import org.apache.hadoop.metrics2.MetricsInfo;
 
@@ -60,8 +58,12 @@ public enum JvmMetricsInfo implements MetricsInfo {
   @Override public String description() { return desc; }
 
   @Override public String toString() {
-  return Objects.toStringHelper(this)
-      .add("name", name()).add("description", desc)
-      .toString();
+    StringBuilder sb = new StringBuilder(32);
+    sb.append(this.getClass().getSimpleName());
+    sb.append("{name=");
+    sb.append(name());
+    sb.append(", description=");
+    sb.append(desc);
+    return sb.append('}').toString();
   }
 }

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/util/MetricsCache.java

@@ -31,7 +31,6 @@ import org.apache.hadoop.metrics2.AbstractMetric;
 import org.apache.hadoop.metrics2.MetricsRecord;
 import org.apache.hadoop.metrics2.MetricsTag;
 
-import com.google.common.base.Objects;
 import com.google.common.collect.Maps;
 
 /**
@@ -127,9 +126,13 @@ public class MetricsCache {
     }
 
     @Override public String toString() {
-      return Objects.toStringHelper(this)
-          .add("tags", tags).add("metrics", metrics)
-          .toString();
+      StringBuilder sb = new StringBuilder(32);
+      sb.append(this.getClass().getSimpleName());
+      sb.append("{tags=");
+      sb.append(tags);
+      sb.append(", metrics=");
+      sb.append(metrics);
+      return sb.append('}').toString();
     }
   }