HDFS-11466. Change dfs.namenode.write-lock-reporting-threshold-ms default from 1000ms to 5000ms. Contributed by Andrew Wang.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java

@@ -425,7 +425,7 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
   // event to be logged
   public static final String  DFS_NAMENODE_WRITE_LOCK_REPORTING_THRESHOLD_MS_KEY =
       "dfs.namenode.write-lock-reporting-threshold-ms";
-  public static final long    DFS_NAMENODE_WRITE_LOCK_REPORTING_THRESHOLD_MS_DEFAULT = 1000L;
+  public static final long    DFS_NAMENODE_WRITE_LOCK_REPORTING_THRESHOLD_MS_DEFAULT = 5000L;
   public static final String  DFS_NAMENODE_READ_LOCK_REPORTING_THRESHOLD_MS_KEY =
       "dfs.namenode.read-lock-reporting-threshold-ms";
   public static final long    DFS_NAMENODE_READ_LOCK_REPORTING_THRESHOLD_MS_DEFAULT = 5000L;

hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml

@@ -2720,7 +2720,7 @@
 
 <property>
   <name>dfs.namenode.write-lock-reporting-threshold-ms</name>
-  <value>1000</value>
+  <value>5000</value>
   <description>When a write lock is held on the namenode for a long time,
     this will be logged as the lock is released. This sets how long the
     lock must be held for logging to occur.