HDFS-12438. Rename dfs.datanode.ec.reconstruction.stripedblock.threads.size to dfs.datanode.ec.reconstruction.threads. Contributed by Andrew Wang

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

@@ -575,8 +575,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
   public static final int     DFS_DN_EC_RECONSTRUCTION_STRIPED_READ_BUFFER_SIZE_DEFAULT = 64 * 1024;
   public static final String  DFS_DN_EC_RECONSTRUCTION_STRIPED_READ_TIMEOUT_MILLIS_KEY = "dfs.datanode.ec.reconstruction.stripedread.timeout.millis";
   public static final int     DFS_DN_EC_RECONSTRUCTION_STRIPED_READ_TIMEOUT_MILLIS_DEFAULT = 5000; //5s
-  public static final String  DFS_DN_EC_RECONSTRUCTION_STRIPED_BLK_THREADS_KEY = "dfs.datanode.ec.reconstruction.stripedblock.threads.size";
-  public static final int     DFS_DN_EC_RECONSTRUCTION_STRIPED_BLK_THREADS_DEFAULT = 8;
+  public static final String  DFS_DN_EC_RECONSTRUCTION_THREADS_KEY = "dfs.datanode.ec.reconstruction.threads";
+  public static final int     DFS_DN_EC_RECONSTRUCTION_THREADS_DEFAULT = 8;
 
   public static final String
       DFS_DATANODE_DIRECTORYSCAN_THROTTLE_LIMIT_MS_PER_SEC_KEY =

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/ErasureCodingWorker.java

@@ -57,8 +57,8 @@ public final class ErasureCodingWorker {
         DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_STRIPED_READ_THREADS_KEY,
         DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_STRIPED_READ_THREADS_DEFAULT));
     initializeStripedBlkReconstructionThreadPool(conf.getInt(
-        DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_STRIPED_BLK_THREADS_KEY,
-        DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_STRIPED_BLK_THREADS_DEFAULT));
+        DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_THREADS_KEY,
+        DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_THREADS_DEFAULT));
   }
 
   private void initializeStripedReadThreadPool(int num) {

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

@@ -3055,7 +3055,7 @@
 </property>
 
 <property>
-  <name>dfs.datanode.ec.reconstruction.stripedblock.threads.size</name>
+  <name>dfs.datanode.ec.reconstruction.threads</name>
   <value>8</value>
   <description>
     Number of threads used by the Datanode for background

hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSErasureCoding.md

@@ -136,7 +136,7 @@ Deployment
   1. `dfs.datanode.ec.reconstruction.stripedread.timeout.millis` - Timeout for striped reads. Default value is 5000 ms.
   1. `dfs.datanode.ec.reconstruction.stripedread.threads` - Number of concurrent reader threads. Default value is 20 threads.
   1. `dfs.datanode.ec.reconstruction.stripedread.buffer.size` - Buffer size for reader service. Default value is 64KB.
-  1. `dfs.datanode.ec.reconstruction.stripedblock.threads.size` - Number of threads used by the Datanode for background reconstruction work. Default value is 8 threads.
+  1. `dfs.datanode.ec.reconstruction.threads` - Number of threads used by the Datanode for background reconstruction work. Default value is 8 threads.
 
 ### Enable Intel ISA-L
 

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestReconstructStripedFile.java

@@ -447,7 +447,7 @@ public class TestReconstructStripedFile {
     conf.setInt(
         DFSConfigKeys.DFS_NAMENODE_RECONSTRUCTION_PENDING_TIMEOUT_SEC_KEY, 10);
     conf.setInt(DFSConfigKeys.DFS_NAMENODE_REPLICATION_MAX_STREAMS_KEY, 20);
-    conf.setInt(DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_STRIPED_BLK_THREADS_KEY,
+    conf.setInt(DFSConfigKeys.DFS_DN_EC_RECONSTRUCTION_THREADS_KEY,
         2);
     cluster = new MiniDFSCluster.Builder(conf)
         .numDataNodes(numDataNodes).build();