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From d...@apache.org
Subject svn commit: r639655 - in /hadoop/core/trunk: ./ docs/ src/contrib/hod/hodlib/Common/ src/contrib/hod/hodlib/Hod/ src/docs/src/documentation/content/xdocs/
Date Fri, 21 Mar 2008 14:28:12 GMT
Author: ddas
Date: Fri Mar 21 07:27:51 2008
New Revision: 639655

URL: http://svn.apache.org/viewvc?rev=639655&view=rev
Log:
HADOOP-2796. Enables distinguishing exit codes from user code vis-a-vis HOD's exit code. Contributed
by Hemanth Yamijala.

Modified:
    hadoop/core/trunk/CHANGES.txt
    hadoop/core/trunk/docs/changes.html
    hadoop/core/trunk/docs/hod_user_guide.html
    hadoop/core/trunk/docs/hod_user_guide.pdf
    hadoop/core/trunk/src/contrib/hod/hodlib/Common/setup.py
    hadoop/core/trunk/src/contrib/hod/hodlib/Hod/hod.py
    hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hod_user_guide.xml

Modified: hadoop/core/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/CHANGES.txt?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/CHANGES.txt (original)
+++ hadoop/core/trunk/CHANGES.txt Fri Mar 21 07:27:51 2008
@@ -131,6 +131,9 @@
 
     HADOOP-2373. Improvement in safe-mode reporting. (shv)
 
+    HADOOP-2796. Enables distinguishing exit codes from user code vis-a-vis
+    HOD's exit code. (Hemanth Yamijala via ddas)
+
   OPTIMIZATIONS
 
     HADOOP-2790.  Fixed inefficient method hasSpeculativeTask by removing

Modified: hadoop/core/trunk/docs/changes.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/changes.html?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/docs/changes.html (original)
+++ hadoop/core/trunk/docs/changes.html Fri Mar 21 07:27:51 2008
@@ -56,7 +56,7 @@
 </a></h2>
 <ul id="trunk_(unreleased_changes)_">
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._incompatible_changes_')">
 INCOMPATIBLE CHANGES
-</a>&nbsp;&nbsp;&nbsp;(10)
+</a>&nbsp;&nbsp;&nbsp;(11)
     <ol id="trunk_(unreleased_changes)_._incompatible_changes_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2786">HADOOP-2786</a>.
 Move hbase out of hadoop core
 </li>
@@ -79,6 +79,7 @@
 </li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2822">HADOOP-2822</a>.
Remove depreceted code for classes InputFormatBase and
 PhasedFileSystem.<br />(Amareshwari Sriramadasu via enis)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2116">HADOOP-2116</a>.
Changes the layout of the task execution directory.<br />(Amareshwari Sriramadasu via
ddas)</li>
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._new_features_')">
 NEW FEATURES
@@ -101,7 +102,7 @@
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._improvements_')">
 IMPROVEMENTS
-</a>&nbsp;&nbsp;&nbsp;(20)
+</a>&nbsp;&nbsp;&nbsp;(22)
     <ol id="trunk_(unreleased_changes)_._improvements_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2655">HADOOP-2655</a>.
Copy on write for data and metadata files in the
 presence of snapshots. Needed for supporting appends to HDFS
@@ -143,6 +144,8 @@
 the cluster directory.<br />(Hemanth Yamijala via ddas)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2899">HADOOP-2899</a>.
[HOD] Cleans up hdfs:///mapredsystem directory after
 deallocation.<br />(Hemanth Yamijala via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2886">HADOOP-2886</a>.
 Track individual RPC metrics.<br />(girish vaitheeswaran via dhruba)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-2373">HADOOP-2373</a>.
Improvement in safe-mode reporting.<br />(shv)</li>
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._optimizations_')">
 OPTIMIZATIONS
@@ -168,7 +171,7 @@
     </ol>
   </li>
   <li><a href="javascript:toggleList('trunk_(unreleased_changes)_._bug_fixes_')">
 BUG FIXES
-</a>&nbsp;&nbsp;&nbsp;(51)
+</a>&nbsp;&nbsp;&nbsp;(53)
     <ol id="trunk_(unreleased_changes)_._bug_fixes_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2195">HADOOP-2195</a>.
'-mkdir' behaviour is now closer to Linux shell in case of
 errors.<br />(Mahadev Konar via rangadi)</li>
@@ -268,6 +271,10 @@
 hod/hodlib/Common/xmlrpc.py.<br />(Vinod Kumar Vavilapalli via ddas)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-2936">HADOOP-2936</a>.
Fixes HOD in a way that it generates hdfs://host:port on the
 client side configs.<br />(Vinod Kumar Vavilapalli via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3025">HADOOP-3025</a>.
ChecksumFileSystem supports the delete method with
+the recursive flag.<br />(Mahadev Konar via dhruba)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3012">HADOOP-3012</a>.
dfs -mv file to user home directory throws exception if
+the user home directory does not exist.<br />(Mahadev Konar via dhruba)</li>
     </ol>
   </li>
 </ul>

Modified: hadoop/core/trunk/docs/hod_user_guide.html
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hod_user_guide.html?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hod_user_guide.html (original)
+++ hadoop/core/trunk/docs/hod_user_guide.html Fri Mar 21 07:27:51 2008
@@ -1080,10 +1080,18 @@
         <td colspan="1" rowspan="1"> An operation which requires an allocated cluster
is given a cluster directory with no state information. </td>
       
 </tr>
-    
+   
+      
+<tr>
+        
+<td colspan="1" rowspan="1"> Any non-zero exit code </td>
+        <td colspan="1" rowspan="1"> HOD script error </td>
+        <td colspan="1" rowspan="1"> If the hod script option was used, it is likely
that the exit code is from the script. Unfortunately, this could clash with the exit codes
of the hod command itself. In order to help users differentiate these two, hod writes the
script's exit code to a file called script.exitcode in the cluster directory, if the script
returned an exit code. You can cat this file to determine the script's exit code. If it does
not exist, then it is a hod command exit code.</td> 
+      
+</tr>
   
 </table>
-<a name="N1072E"></a><a name="Hadoop+Jobs+Not+Running+on+a+Successfully+Allocated+Cluster"></a>
+<a name="N10740"></a><a name="Hadoop+Jobs+Not+Running+on+a+Successfully+Allocated+Cluster"></a>
 <h3 class="h4"> Hadoop Jobs Not Running on a Successfully Allocated Cluster </h3>
 <a name="Hadoop_Jobs_Not_Running_on_a_Suc" id="Hadoop_Jobs_Not_Running_on_a_Suc"></a>
 <p>This scenario generally occurs when a cluster is allocated, and is left inactive
for sometime, and then hadoop jobs are attempted to be run on them. Then Hadoop jobs fail
with the following exception:</p>
@@ -1102,31 +1110,31 @@
 <em>Possible Cause:</em> There is a version mismatch between the version of the
hadoop client being used to submit jobs and the hadoop used in provisioning (typically via
the tarball option). Ensure compatible versions are being used.</p>
 <p>
 <em>Possible Cause:</em> You used one of the options for specifying Hadoop configuration
<span class="codefrag">-M or -H</span>, which had special characters like space
or comma that were not escaped correctly. Refer to the section <em>Options Configuring
HOD</em> for checking how to specify such options correctly.</p>
-<a name="N10769"></a><a name="My+Hadoop+Job+Got+Killed"></a>
+<a name="N1077B"></a><a name="My+Hadoop+Job+Got+Killed"></a>
 <h3 class="h4"> My Hadoop Job Got Killed </h3>
 <a name="My_Hadoop_Job_Got_Killed" id="My_Hadoop_Job_Got_Killed"></a>
 <p>
 <em>Possible Cause:</em> The wallclock limit specified by the Torque administrator
or the <span class="codefrag">-l</span> option defined in the section <em>Specifying
Additional Job Attributes</em> was exceeded since allocation time. Thus the cluster
would have got released. Deallocate the cluster and allocate it again, this time with a larger
wallclock time.</p>
 <p>
 <em>Possible Cause:</em> Problems with the JobTracker node. Refer to the section
in <em>Collecting and Viewing Hadoop Logs</em> to get more information.</p>
-<a name="N10784"></a><a name="Hadoop+Job+Fails+with+Message%3A+%27Job+tracker+still+initializing%27"></a>
+<a name="N10796"></a><a name="Hadoop+Job+Fails+with+Message%3A+%27Job+tracker+still+initializing%27"></a>
 <h3 class="h4"> Hadoop Job Fails with Message: 'Job tracker still initializing' </h3>
 <a name="Hadoop_Job_Fails_with_Message_Jo" id="Hadoop_Job_Fails_with_Message_Jo"></a>
 <p>
 <em>Possible Cause:</em> The hadoop job was being run as part of the HOD script
command, and it started before the JobTracker could come up fully. Allocate the cluster using
a large value for the configuration option <span class="codefrag">--hod.script-wait-time</span>.
Typically a value of 120 should work, though it is typically unnecessary to be that large.</p>
-<a name="N10794"></a><a name="The+Exit+Codes+For+HOD+Are+Not+Getting+Into+Torque"></a>
+<a name="N107A6"></a><a name="The+Exit+Codes+For+HOD+Are+Not+Getting+Into+Torque"></a>
 <h3 class="h4"> The Exit Codes For HOD Are Not Getting Into Torque </h3>
 <a name="The_Exit_Codes_For_HOD_Are_Not_G" id="The_Exit_Codes_For_HOD_Are_Not_G"></a>
 <p>
 <em>Possible Cause:</em> Version 0.16 of hadoop is required for this functionality
to work. The version of Hadoop used does not match. Use the required version of Hadoop.</p>
 <p>
 <em>Possible Cause:</em> The deallocation was done without using the <span
class="codefrag">hod</span> command; for e.g. directly using <span class="codefrag">qdel</span>.
When the cluster is deallocated in this manner, the HOD processes are terminated using signals.
This results in the exit code to be based on the signal number, rather than the exit code
of the program.</p>
-<a name="N107AC"></a><a name="The+Hadoop+Logs+are+Not+Uploaded+to+DFS"></a>
+<a name="N107BE"></a><a name="The+Hadoop+Logs+are+Not+Uploaded+to+DFS"></a>
 <h3 class="h4"> The Hadoop Logs are Not Uploaded to DFS </h3>
 <a name="The_Hadoop_Logs_are_Not_Uploaded" id="The_Hadoop_Logs_are_Not_Uploaded"></a>
 <p>
 <em>Possible Cause:</em> There is a version mismatch between the version of the
hadoop being used for uploading the logs and the external HDFS. Ensure that the correct version
is specified in the <span class="codefrag">hodring.pkgs</span> option.</p>
-<a name="N107BC"></a><a name="Locating+Ringmaster+Logs"></a>
+<a name="N107CE"></a><a name="Locating+Ringmaster+Logs"></a>
 <h3 class="h4"> Locating Ringmaster Logs </h3>
 <a name="Locating_Ringmaster_Logs" id="Locating_Ringmaster_Logs"></a>
 <p>To locate the ringmaster logs, follow these steps: </p>
@@ -1143,7 +1151,7 @@
 <li> If you don't get enough information, you may want to set the ringmaster debug
level to 4. This can be done by passing <span class="codefrag">--ringmaster.debug 4</span>
to the hod command line.</li>
   
 </ul>
-<a name="N107E8"></a><a name="Locating+Hodring+Logs"></a>
+<a name="N107FA"></a><a name="Locating+Hodring+Logs"></a>
 <h3 class="h4"> Locating Hodring Logs </h3>
 <a name="Locating_Hodring_Logs" id="Locating_Hodring_Logs"></a>
 <p>To locate hodring logs, follow the steps below: </p>

Modified: hadoop/core/trunk/docs/hod_user_guide.pdf
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/docs/hod_user_guide.pdf?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/docs/hod_user_guide.pdf (original)
+++ hadoop/core/trunk/docs/hod_user_guide.pdf Fri Mar 21 07:27:51 2008
@@ -5,10 +5,10 @@
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@@ -1142,151 +1142,151 @@
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@@ -1294,5 +1294,5 @@
 /Info 4 0 R
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 startxref
-64359
+65173
 %%EOF

Modified: hadoop/core/trunk/src/contrib/hod/hodlib/Common/setup.py
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/contrib/hod/hodlib/Common/setup.py?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/src/contrib/hod/hodlib/Common/setup.py (original)
+++ hadoop/core/trunk/src/contrib/hod/hodlib/Common/setup.py Fri Mar 21 07:27:51 2008
@@ -600,6 +600,7 @@
         return ", ".join(opts)    
 
 class options(OptionParser, baseConfig):
+
     def __init__(self, optionDef, usage, version, originalDir=None, 
                  withConfig=False, defaultConfig=None, defaultLocation=None,
                  name=None):
@@ -730,6 +731,9 @@
               clusterDir = getattr(self.__parsedOptions, 'hod.clusterdir')
               numNodes = getattr(self.__parsedOptions, 'hod.nodecount')
 
+              if clusterDir:
+                self.remove_exit_code_file(originalDir, clusterDir)
+
               if not _script or not clusterDir or not numNodes:
                 print getattr(hodhelp, "help_%s" % cmdstr)()
                 sys.exit(3)
@@ -771,6 +775,24 @@
                         self.__defaultLoc, self.config)
         self.__build_dict()   
 
+    def norm_cluster_dir(self, orig_dir, directory):
+        directory = os.path.expanduser(directory)
+        if not os.path.isabs(directory):
+            directory = os.path.join(orig_dir, directory)
+        directory = os.path.abspath(directory)
+
+        return directory
+
+
+    def remove_exit_code_file(self, orig_dir, dir):
+        try:
+            dir = self.norm_cluster_dir(orig_dir, dir)
+            if os.path.exists(dir):
+                exit_code_file = os.path.join(dir, "script.exitcode")
+                if os.path.exists(exit_code_file):
+                    os.remove(exit_code_file)
+        except:
+            print >>sys.stderr, "Could not remove the script.exitcode file."
     
     def __init_display_options(self):
         self.__orig_option_list = self.option_list[:]

Modified: hadoop/core/trunk/src/contrib/hod/hodlib/Hod/hod.py
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/contrib/hod/hodlib/Hod/hod.py?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/src/contrib/hod/hodlib/Hod/hod.py (original)
+++ hadoop/core/trunk/src/contrib/hod/hodlib/Hod/hod.py Fri Mar 21 07:27:51 2008
@@ -453,6 +453,7 @@
   def script(self):
     errorFlag = False
     errorMsgs = []
+    scriptRet = 0 # return from the script, if run
     
     script = self.__cfg['hod']['script']
     nodes = self.__cfg['hod']['nodecount']
@@ -480,9 +481,9 @@
     if errorFlag:
       for msg in errorMsgs:
         self.__log.critical(msg)
+      self.handle_script_exit_code(scriptRet, clusterDir)
       sys.exit(3)
 
-    ret = 0
     try:
       self._op_allocate(('allocate', clusterDir, str(nodes)))
       if self.__opCode == 0:
@@ -495,8 +496,8 @@
           scriptRunner = hadoopScript(clusterDir, 
                                   self.__cfg['hod']['original-dir'])
           self.__opCode = scriptRunner.run(script)
-          ret = self.__opCode
-          self.__log.debug("Exit code from running the script: %d" % self.__opCode)
+          scriptRet = self.__opCode
+          self.__log.info("Exit code from running the script: %d" % self.__opCode)
       else:
         self.__log.critical("Error %d in allocating the cluster. Cannot run the script."
% self.__opCode)
 
@@ -513,13 +514,27 @@
                           get_exception_error_string()))
       self.__log.debug(get_exception_string())
     
-    self.__cleanup()      
-    
-    # We want to give importance to a failed script's exit code.
-    if ret != 0:
-      self.__opCode = ret
+    self.__cleanup()
 
+    self.handle_script_exit_code(scriptRet, clusterDir)
+    
     return self.__opCode
+
+  def handle_script_exit_code(self, scriptRet, clusterDir):
+    # We want to give importance to a failed script's exit code, and write out exit code
to a file separately
+    # so users can easily get it if required. This way they can differentiate between the
script's exit code
+    # and hod's exit code.
+    if os.path.exists(clusterDir):
+      exit_code_file_name = (os.path.join(clusterDir, 'script.exitcode'))
+      if scriptRet != 0:
+        exit_code_file = open(exit_code_file_name, 'w')
+        print >>exit_code_file, scriptRet
+        exit_code_file.close()
+        self.__opCode = scriptRet
+      else:
+        #ensure script exit code file is not there:
+        if (os.path.exists(exit_code_file_name)):
+          os.remove(exit_code_file_name)
 
 class hodHelp:
   def __init__(self):

Modified: hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hod_user_guide.xml
URL: http://svn.apache.org/viewvc/hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hod_user_guide.xml?rev=639655&r1=639654&r2=639655&view=diff
==============================================================================
--- hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hod_user_guide.xml (original)
+++ hadoop/core/trunk/src/docs/src/documentation/content/xdocs/hod_user_guide.xml Fri Mar
21 07:27:51 2008
@@ -464,7 +464,12 @@
         <td> Cluster not allocated </td>
         <td> An operation which requires an allocated cluster is given a cluster directory
with no state information. </td>
       </tr>
-    
+   
+      <tr>
+        <td> Any non-zero exit code </td>
+        <td> HOD script error </td>
+        <td> If the hod script option was used, it is likely that the exit code is
from the script. Unfortunately, this could clash with the exit codes of the hod command itself.
In order to help users differentiate these two, hod writes the script's exit code to a file
called script.exitcode in the cluster directory, if the script returned an exit code. You
can cat this file to determine the script's exit code. If it does not exist, then it is a
hod command exit code.</td> 
+      </tr>
   </table>
     </section>
   <section><title> Hadoop Jobs Not Running on a Successfully Allocated Cluster
</title><anchor id="Hadoop_Jobs_Not_Running_on_a_Suc"></anchor>



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