HBASE-28775 Change the output of DatanodeInfo in the log to the hostn…

hbase-asyncfs/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputHelper.java

@@ -35,13 +35,15 @@
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.EnumSet;
 import java.util.HashSet;
 import java.util.IdentityHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.crypto.CryptoProtocolVersion;
 import org.apache.hadoop.crypto.Encryptor;
@@ -533,8 +535,10 @@ private static FanOutOneBlockAsyncDFSOutput createOutput(DistributedFileSystem d
     Set<DatanodeInfo> toExcludeNodes =
       new HashSet<>(excludeDatanodeManager.getExcludeDNs().keySet());
     for (int retry = 0;; retry++) {
-      LOG.debug("When create output stream for {}, exclude list is {}, retry={}", src,
-        toExcludeNodes, retry);
+      if (LOG.isDebugEnabled()) {
+        LOG.debug("When create output stream for {}, exclude list is {}, retry={}", src,
+          getDataNodeInfo(toExcludeNodes), retry);
+      }
       HdfsFileStatus stat;
       try {
         stat = FILE_CREATOR.create(namenode, src,
@@ -680,4 +684,15 @@ static void sleepIgnoreInterrupt(int retry) {
     } catch (InterruptedException e) {
     }
   }
+
+  public static String getDataNodeInfo(Collection<DatanodeInfo> datanodeInfos) {
+    if (datanodeInfos.isEmpty()) {
+      return "[]";
+    }
+    return datanodeInfos.stream()
+      .map(datanodeInfo -> new StringBuilder().append("(").append(datanodeInfo.getHostName())
+        .append("/").append(datanodeInfo.getInfoAddr()).append(":")
+        .append(datanodeInfo.getInfoPort()).append(")").toString())
+      .collect(Collectors.joining(",", "[", "]"));
+  }
 }

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.java

@@ -56,6 +56,7 @@
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.concurrent.locks.ReentrantLock;
+import java.util.stream.Collectors;
 import org.apache.commons.lang3.mutable.MutableLong;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FileStatus;
@@ -69,6 +70,7 @@
 import org.apache.hadoop.hbase.PrivateCellUtil;
 import org.apache.hadoop.hbase.client.RegionInfo;
 import org.apache.hadoop.hbase.exceptions.TimeoutIOException;
+import org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper;
 import org.apache.hadoop.hbase.io.util.MemorySizeUtil;
 import org.apache.hadoop.hbase.ipc.RpcServer;
 import org.apache.hadoop.hbase.ipc.ServerCall;
@@ -921,7 +923,8 @@ private Map<byte[], List<byte[]>> rollWriterInternal(boolean force) throws IOExc
         tellListenersAboutPostLogRoll(oldPath, newPath);
         if (LOG.isDebugEnabled()) {
           LOG.debug("Create new " + implClassName + " writer with pipeline: "
-            + Arrays.toString(getPipeline()));
+            + FanOutOneBlockAsyncDFSOutputHelper
+              .getDataNodeInfo(Arrays.stream(getPipeline()).collect(Collectors.toList())));
         }
         // We got a new writer, so reset the slow sync count
         lastTimeCheckSlowSync = EnvironmentEdgeManager.currentTime();