HADOOP-8753. LocalDirAllocator throws ArithmeticException: divide by zero when there is no available space on configured local dir. Contributed by Benoy Antony.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550570 13f79535-47bb-0310-9956-ffa450edef68

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -282,6 +282,9 @@ Trunk (Unreleased)
 
     HADOOP-10044 Improve the javadoc of rpc code (sanjay Radia)
 
+    HADOOP-8753. LocalDirAllocator throws "ArithmeticException: / by zero" when
+    there is no available space on configured local dir. (Benoy Antony via hitesh)
+
   OPTIMIZATIONS
 
     HADOOP-7761. Improve the performance of raw comparisons. (todd)

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/LocalDirAllocator.java

@@ -365,6 +365,10 @@ public class LocalDirAllocator {
           totalAvailable += availableOnDisk[i];
         }
 
+        if (totalAvailable == 0){
+          throw new DiskErrorException("No space available in any of the local directories.");
+        }
+
         // Keep rolling the wheel till we get a valid path
         Random r = new java.util.Random();
         while (numDirsSearched < numDirs && returnPath == null) {