HADOOP-15868. AliyunOSS: update document for properties of multiple part download, multiple part upload and directory copy. Contributed by Jinhu Wu.

hadoop-tools/hadoop-aliyun/src/site/markdown/tools/hadoop-aliyun/index.md

@@ -228,6 +228,42 @@ please raise your issues with them.
       <description>Size of each of multipart pieces in bytes.</description>
     </property>
 
+    <property>
+      <name>fs.oss.upload.active.blocks</name>
+      <value>4</value>
+      <description>Active(Concurrent) upload blocks when uploading a file.</description>
+    </property>
+
+    <property>
+      <name>fs.oss.multipart.download.threads</name>
+      <value>10</value>
+      <description>The maximum number of threads allowed in the pool for multipart download and upload.</description>
+    </property>
+
+    <property>
+      <name>fs.oss.multipart.download.ahead.part.max.number</name>
+      <value>4</value>
+      <description>The maximum number of read ahead parts when reading a file.</description>
+    </property>
+
+    <property>
+      <name>fs.oss.max.total.tasks</name>
+      <value>128</value>
+      <description>The maximum queue number for multipart download and upload.</description>
+    </property>
+
+    <property>
+      <name>fs.oss.max.copy.threads</name>
+      <value>25</value>
+      <description>The maximum number of threads allowed in the pool for copy operations.</description>
+    </property>
+
+    <property>
+      <name>fs.oss.max.copy.tasks.per.dir</name>
+      <value>5</value>
+      <description>The maximum number of concurrent tasks allowed when copying a directory.</description>
+    </property>
+
     <property>
       <name>fs.oss.multipart.upload.threshold</name>
       <value>20971520</value>