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From d...@apache.org
Subject svn commit: r772877 - in /hadoop/core/branches/branch-0.20: ./ CHANGES.txt src/core/org/apache/hadoop/fs/LocalDirAllocator.java
Date Fri, 08 May 2009 08:04:09 GMT
Author: ddas
Date: Fri May  8 08:04:09 2009
New Revision: 772877

URL: http://svn.apache.org/viewvc?rev=772877&view=rev
Log:
Merge -r 772875:772876 from trunk onto 0.20 branch. Fixes HADOOP-5349.

Modified:
    hadoop/core/branches/branch-0.20/   (props changed)
    hadoop/core/branches/branch-0.20/CHANGES.txt   (contents, props changed)
    hadoop/core/branches/branch-0.20/src/core/org/apache/hadoop/fs/LocalDirAllocator.java

Propchange: hadoop/core/branches/branch-0.20/
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Fri May  8 08:04:09 2009
@@ -1,2 +1,2 @@
 /hadoop/core/branches/branch-0.19:713112
-/hadoop/core/trunk:727001,727117,727191,727212,727217,727228,727255,727869,728187,729052,729987,732385,732572,732613,732777,732838,732869,733887,734870,734916,736426,738328,738697,740077,740157,741703,741762,743745,743816,743892,744894,745180,746010,746206,746227,746233,746274,746338,746902-746903,746925,746944,746968,746970,747279,747289,747802,748084,748090,748783,749262,749318,749863,750533,752073,752609,752834,752836,752913,752932,753112-753113,753346,754645,754847,754927,755035,755226,755348,755370,755418,755426,755790,755905,755938,755960,755986,755998,756352,757448,757624,757849,758156,759398,759932,760502,760783,761046,761482,761632,762216,762879,763107,763502,764967,765016,765809,765951,771607,771661,772844
+/hadoop/core/trunk:727001,727117,727191,727212,727217,727228,727255,727869,728187,729052,729987,732385,732572,732613,732777,732838,732869,733887,734870,734916,736426,738328,738697,740077,740157,741703,741762,743745,743816,743892,744894,745180,746010,746206,746227,746233,746274,746338,746902-746903,746925,746944,746968,746970,747279,747289,747802,748084,748090,748783,749262,749318,749863,750533,752073,752609,752834,752836,752913,752932,753112-753113,753346,754645,754847,754927,755035,755226,755348,755370,755418,755426,755790,755905,755938,755960,755986,755998,756352,757448,757624,757849,758156,759398,759932,760502,760783,761046,761482,761632,762216,762879,763107,763502,764967,765016,765809,765951,771607,771661,772844,772876

Modified: hadoop/core/branches/branch-0.20/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/core/branches/branch-0.20/CHANGES.txt?rev=772877&r1=772876&r2=772877&view=diff
==============================================================================
--- hadoop/core/branches/branch-0.20/CHANGES.txt (original)
+++ hadoop/core/branches/branch-0.20/CHANGES.txt Fri May  8 08:04:09 2009
@@ -53,6 +53,10 @@
     kills itself if it ever discovers that the port to which jetty is actually
     bound is invalid (-1). (ddas)
 
+    HADOOP-5349. Fixes a problem in LocalDirAllocator to check for the return
+    path value that is returned for the case where the file we want to write
+    is of an unknown size. (Vinod Kumar Vavilapalli via ddas)
+
 Release 0.20.0 - 2009-04-15
 
   INCOMPATIBLE CHANGES

Propchange: hadoop/core/branches/branch-0.20/CHANGES.txt
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Fri May  8 08:04:09 2009
@@ -1,3 +1,3 @@
 /hadoop/core/branches/branch-0.18/CHANGES.txt:727226
 /hadoop/core/branches/branch-0.19/CHANGES.txt:713112
-/hadoop/core/trunk/CHANGES.txt:727001,727117,727191,727212,727228,727255,727869,728187,729052,729987,732385,732572,732613,732777,732838,732869,733887,734870,734916,735082,736426,738602,738697,739416,740077,740157,741703,741762,743296,743745,743816,743892,744894,745180,745268,746010,746193,746206,746227,746233,746274,746902-746903,746925,746944,746968,746970,747279,747289,747802,748084,748090,748783,749262,749318,749863,750533,752073,752514,752555,752590,752609,752834,752836,752913,752932,753112-753113,753346,754645,754847,754927,755035,755226,755348,755370,755418,755426,755790,755905,755938,755986,755998,756352,757448,757624,757849,758156,759398,759932,760502,760783,761046,761482,761632,762216,762879,763107,763502,764967,765016,765809,765951,771607,772844
+/hadoop/core/trunk/CHANGES.txt:727001,727117,727191,727212,727228,727255,727869,728187,729052,729987,732385,732572,732613,732777,732838,732869,733887,734870,734916,735082,736426,738602,738697,739416,740077,740157,741703,741762,743296,743745,743816,743892,744894,745180,745268,746010,746193,746206,746227,746233,746274,746902-746903,746925,746944,746968,746970,747279,747289,747802,748084,748090,748783,749262,749318,749863,750533,752073,752514,752555,752590,752609,752834,752836,752913,752932,753112-753113,753346,754645,754847,754927,755035,755226,755348,755370,755418,755426,755790,755905,755938,755986,755998,756352,757448,757624,757849,758156,759398,759932,760502,760783,761046,761482,761632,762216,762879,763107,763502,764967,765016,765809,765951,771607,772844,772876

Modified: hadoop/core/branches/branch-0.20/src/core/org/apache/hadoop/fs/LocalDirAllocator.java
URL: http://svn.apache.org/viewvc/hadoop/core/branches/branch-0.20/src/core/org/apache/hadoop/fs/LocalDirAllocator.java?rev=772877&r1=772876&r2=772877&view=diff
==============================================================================
--- hadoop/core/branches/branch-0.20/src/core/org/apache/hadoop/fs/LocalDirAllocator.java
(original)
+++ hadoop/core/branches/branch-0.20/src/core/org/apache/hadoop/fs/LocalDirAllocator.java
Fri May  8 08:04:09 2009
@@ -306,16 +306,24 @@
           availableOnDisk[i] = dirDF[i].getAvailable();
           totalAvailable += availableOnDisk[i];
         }
-            // "roll the ball" -- pick a directory
+
+        // Keep rolling the wheel till we get a valid path
         Random r = new java.util.Random();
-        long randomPosition = Math.abs(r.nextLong()) % totalAvailable;
-        int dir=0;
-        while(randomPosition > availableOnDisk[dir]) {
-          randomPosition -= availableOnDisk[dir];
-          dir++;
+        while (numDirsSearched < numDirs && returnPath == null) {
+          long randomPosition = Math.abs(r.nextLong()) % totalAvailable;
+          int dir = 0;
+          while (randomPosition > availableOnDisk[dir]) {
+            randomPosition -= availableOnDisk[dir];
+            dir++;
+          }
+          dirNumLastAccessed = dir;
+          returnPath = createPath(pathStr);
+          if (returnPath == null) {
+            totalAvailable -= availableOnDisk[dir];
+            availableOnDisk[dir] = 0; // skip this disk
+            numDirsSearched++;
+          }
         }
-        dirNumLastAccessed = dir;
-        returnPath = createPath(pathStr);
       } else {
         while (numDirsSearched < numDirs && returnPath == null) {
           long capacity = dirDF[dirNumLastAccessed].getAvailable();



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