HDFS-16908. Fix javadoc of field IncrementalBlockReportManager#readyT…

…oSend. (apache#5351). Contributed by farmmamba.

Reviewed-by: Tao Li <tomscut@apache.org>
Signed-off-by: Ayush Saxena <ayushsaxena@apache.org>

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

@@ -128,8 +128,8 @@ int putMissing(ReceivedDeletedBlockInfo[] rdbis) {
       = Maps.newHashMap();
 
   /**
-   * If this flag is set then an IBR will be sent immediately by the actor
-   * thread without waiting for the IBR timer to elapse.
+   * If this flag is set then an IBR will be sent by the actor
+   * thread after waiting for the IBR timer to elapse.
    */
   private volatile boolean readyToSend = false;