Preparing for release 0.19.1

git-svn-id: https://svn.apache.org/repos/asf/hadoop/core/branches/branch-0.19@745383 13f79535-47bb-0310-9956-ffa450edef68

CHANGES.txt

@@ -1,8 +1,6 @@
 Hadoop Change Log
 
-    HADOOP-4924. Fixes a race condition in TaskTracker re-init. (ddas)
-
-Release 0.19.1 - Unreleased
+Release 0.19.1 - 2009-02-23
 
   INCOMPATIBLE CHANGES
 
@@ -1223,6 +1221,8 @@ Release 0.18.3 - 2009-01-27
     HADOOP-4983. Fixes a problem in updating Counters in the status reporting.
     (Amareshwari Sriramadasu via ddas)
 
+    HADOOP-4924. Fixes a race condition in TaskTracker re-init. (ddas)
+
 Release 0.18.2 - 2008-11-03
 
   BUG FIXES

build.xml

@@ -26,7 +26,7 @@
  
   <property name="Name" value="Hadoop"/>
   <property name="name" value="hadoop"/>
-  <property name="version" value="0.19.1-dev"/>
+  <property name="version" value="0.19.2-dev"/>
   <property name="final.name" value="${name}-${version}"/>
   <property name="year" value="2008"/>
   <property name="libhdfs.version" value="1"/>

docs/changes.html

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@@ -52,19 +52,31 @@
 <a href="http://hadoop.apache.org/core/"><img class="logoImage" alt="Hadoop" src="images/hadoop-logo.jpg" title="Scalable Computing Platform"></a>
 <h1>Hadoop Change Log</h1>
 
-<h2><a href="javascript:toggleList('release_0.19.1_-_unreleased_')">Release 0.19.1 - Unreleased
+<h2><a href="javascript:toggleList('release_0.19.1_-_2009-02-23_')">Release 0.19.1 - 2009-02-23
 </a></h2>
-<ul id="release_0.19.1_-_unreleased_">
-  <li><a href="javascript:toggleList('release_0.19.1_-_unreleased_._improvements_')">  IMPROVEMENTS
-</a>&nbsp;&nbsp;&nbsp;(1)
-    <ol id="release_0.19.1_-_unreleased_._improvements_">
+<ul id="release_0.19.1_-_2009-02-23_">
+  <li><a href="javascript:toggleList('release_0.19.1_-_2009-02-23_._incompatible_changes_')">  INCOMPATIBLE CHANGES
+</a>&nbsp;&nbsp;&nbsp;(2)
+    <ol id="release_0.19.1_-_2009-02-23_._incompatible_changes_">
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5225">HADOOP-5225</a>. Workaround for tmp file handling in HDFS. sync() is
+incomplete as a result. committed only to 0.19.x.<br />(Raghu Angadi)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5224">HADOOP-5224</a>. HDFS append() is disabled. It throws
+UnsupportedOperationException. committed only to 0.19.x<br />(Raghu Angadi)</li>
+    </ol>
+  </li>
+  <li><a href="javascript:toggleList('release_0.19.1_-_2009-02-23_._improvements_')">  IMPROVEMENTS
+</a>&nbsp;&nbsp;&nbsp;(4)
+    <ol id="release_0.19.1_-_2009-02-23_._improvements_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4739">HADOOP-4739</a>. Fix spelling and grammar, improve phrasing of some sections in
 mapred tutorial.<br />(Vivek Ratan via cdouglas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-3894">HADOOP-3894</a>. DFSClient logging improvements.<br />(Steve Loughran via shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5126">HADOOP-5126</a>. Remove empty file BlocksWithLocations.java<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5127">HADOOP-5127</a>. Remove public methods in FSDirectory.<br />(Jakob Homan via shv)</li>
     </ol>
   </li>
-  <li><a href="javascript:toggleList('release_0.19.1_-_unreleased_._bug_fixes_')">  BUG FIXES
-</a>&nbsp;&nbsp;&nbsp;(6)
-    <ol id="release_0.19.1_-_unreleased_._bug_fixes_">
+  <li><a href="javascript:toggleList('release_0.19.1_-_2009-02-23_._bug_fixes_')">  BUG FIXES
+</a>&nbsp;&nbsp;&nbsp;(31)
+    <ol id="release_0.19.1_-_2009-02-23_._bug_fixes_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4697">HADOOP-4697</a>. Fix getBlockLocations in KosmosFileSystem to handle multiple
 blocks correctly.<br />(Sriram Rao via cdouglas)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4420">HADOOP-4420</a>. Add null checks for job, caused by invalid job IDs.<br />(Aaron Kimball via tomwhite)</li>
@@ -76,6 +88,48 @@ szetszwo)</li>
 fuse-dfs.<br />(Brian Bockelman via szetszwo)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4731">HADOOP-4731</a>. Fix capacity scheduler to correctly remove job on completion
 from waiting queue.<br />(Amar Kamat via yhemanth)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4836">HADOOP-4836</a>. Correct typos in mapred related documentation.<br />(Jord? Polo
+via szetszwo)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4821">HADOOP-4821</a>. Usage description in the Quotas guide documentations are
+incorrect.<br />(Boris Shkolnik via hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4847">HADOOP-4847</a>. Moves the loading of OutputCommitter to the Task.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4966">HADOOP-4966</a>. Marks completed setup tasks for removal.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4992">HADOOP-4992</a>. Fixes a package name problem introduced by <a href="http://issues.apache.org/jira/browse/HADOOP-4847">HADOOP-4847</a>.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4982">HADOOP-4982</a>. TestFsck should run in Eclipse.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5008">HADOOP-5008</a>. TestReplication#testPendingReplicationRetry leaves an opened
+fd unclosed.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4906">HADOOP-4906</a>. Fix TaskTracker OOM by keeping a shallow copy of JobConf in
+TaskTracker.TaskInProgress.<br />(Sharad Agarwal via acmurthy)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4918">HADOOP-4918</a>. Fix bzip2 compression to work with Sequence Files.
+(Zheng Shao via dhruba).
+</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4965">HADOOP-4965</a>. TestFileAppend3 should close FileSystem.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4967">HADOOP-4967</a>. Fixes a race condition in the JvmManager to do with killing
+tasks.<br />(ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5002">HADOOP-5002</a>. Fixes a problem to do with the order of initialization of
+reduce task and instantiating the reducer class.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5009">HADOOP-5009</a>. DataNode#shutdown sometimes leaves data block scanner
+verification log unclosed.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5086">HADOOP-5086</a>. Use the appropriate FileSystem for trash URIs.<br />(cdouglas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4955">HADOOP-4955</a>. Make DBOutputFormat us column names from setOutput().<br />(Kevin Peterson via enis)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4862">HADOOP-4862</a>. Minor : <a href="http://issues.apache.org/jira/browse/HADOOP-3678">HADOOP-3678</a> did not remove all the cases of
+spurious IOExceptions logged by DataNode.<br />(Raghu Angadi)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5034">HADOOP-5034</a>. NameNode should send both replication and deletion requests
+to DataNode in one reply to a heartbeat.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5156">HADOOP-5156</a>. TestHeartbeatHandling uses MiiDFSCluster.getNamesystem()
+which does not exit in branch 0.19 and 0.20.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4759">HADOOP-4759</a>. <a href="http://issues.apache.org/jira/browse/HADOOP-4759">HADOOP-4759</a>. Removes temporary output directory for failed and
+killed tasks by launching special CLEANUP tasks for the same.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5161">HADOOP-5161</a>. Accepted sockets do not get placed in
+DataXceiverServer#childSockets.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5193">HADOOP-5193</a>. Correct calculation of edits modification time.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4494">HADOOP-4494</a>. Allow libhdfs to append to files.<br />(Pete Wyckoff via dhruba)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5166">HADOOP-5166</a>. Fix JobTracker restart to work when ACLs are configured
+for the JobTracker. (Amar Kamat via yhemanth).
+</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5067">HADOOP-5067</a>. Fixes TaskInProgress.java to keep track of count of failed and
+killed tasks correctly.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4760">HADOOP-4760</a>. HDFS streams should not throw exceptions when closed twice.<br />(enis)</li>
     </ol>
   </li>
 </ul>
@@ -705,19 +759,34 @@ path rather than the JobClient.<br />(Joydeep Sen Sarma via dhruba)</li>
 </ul>
 <h2><a href="javascript:toggleList('older')">Older Releases</a></h2>
 <ul id="older">
-<h3><a href="javascript:toggleList('release_0.18.3_-_unreleased_')">Release 0.18.3 - Unreleased
+<h3><a href="javascript:toggleList('release_0.18.4_-_unreleased_')">Release 0.18.4 - Unreleased
+</a></h3>
+<ul id="release_0.18.4_-_unreleased_">
+  <li><a href="javascript:toggleList('release_0.18.4_-_unreleased_._bug_fixes_')">  BUG FIXES
+</a>&nbsp;&nbsp;&nbsp;(3)
+    <ol id="release_0.18.4_-_unreleased_._bug_fixes_">
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5114">HADOOP-5114</a>. Remove timeout for accept() in DataNode. This makes accept()
+fail in JDK on Windows and causes many tests to fail.<br />(Raghu Angadi)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5192">HADOOP-5192</a>. Block receiver should not remove a block that's created or
+being written by other threads.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-5134">HADOOP-5134</a>. FSNamesystem#commitBlockSynchronization adds under-construction
+block locations to blocksMap.<br />(Dhruba Borthakur via hairong)</li>
+    </ol>
+  </li>
+</ul>
+<h3><a href="javascript:toggleList('release_0.18.3_-_2009-01-27_')">Release 0.18.3 - 2009-01-27
 </a></h3>
-<ul id="release_0.18.3_-_unreleased_">
-  <li><a href="javascript:toggleList('release_0.18.3_-_unreleased_._improvements_')">  IMPROVEMENTS
+<ul id="release_0.18.3_-_2009-01-27_">
+  <li><a href="javascript:toggleList('release_0.18.3_-_2009-01-27_._improvements_')">  IMPROVEMENTS
 </a>&nbsp;&nbsp;&nbsp;(1)
-    <ol id="release_0.18.3_-_unreleased_._improvements_">
+    <ol id="release_0.18.3_-_2009-01-27_._improvements_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4150">HADOOP-4150</a>. Include librecordio in hadoop releases.<br />(Giridharan Kesavan
 via acmurthy)</li>
     </ol>
   </li>
-  <li><a href="javascript:toggleList('release_0.18.3_-_unreleased_._bug_fixes_')">  BUG FIXES
-</a>&nbsp;&nbsp;&nbsp;(27)
-    <ol id="release_0.18.3_-_unreleased_._bug_fixes_">
+  <li><a href="javascript:toggleList('release_0.18.3_-_2009-01-27_._bug_fixes_')">  BUG FIXES
+</a>&nbsp;&nbsp;&nbsp;(41)
+    <ol id="release_0.18.3_-_2009-01-27_._bug_fixes_">
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4499">HADOOP-4499</a>. DFSClient should invoke checksumOk only once.<br />(Raghu Angadi)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4597">HADOOP-4597</a>. Calculate mis-replicated blocks when safe-mode is turned
 off manually.<br />(shv)</li>
@@ -761,6 +830,28 @@ receiver's tmp data directory.<br />(hairong)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4806">HADOOP-4806</a>. HDFS rename should not use src path as a regular expression.<br />(szetszwo)</li>
       <li><a href="http://issues.apache.org/jira/browse/HADOOP-4795">HADOOP-4795</a>. Prevent lease monitor getting into an infinite loop when
 leases and the namespace tree does not match.<br />(szetszwo)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4620">HADOOP-4620</a>. Fixes Streaming to handle well the cases of map/reduce with empty
+input/output.<br />(Ravi Gummadi via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4857">HADOOP-4857</a>. Fixes TestUlimit to have exactly 1 map in the jobs spawned.<br />(Ravi Gummadi via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4810">HADOOP-4810</a>. Data lost at cluster startup time.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4797">HADOOP-4797</a>. Improve how RPC server reads and writes large buffers. Avoids
+soft-leak of direct buffers and excess copies in NIO layer.<br />(Raghu Angadi)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4840">HADOOP-4840</a>. TestNodeCount sometimes fails with NullPointerException.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4904">HADOOP-4904</a>. Fix deadlock while leaving safe mode.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-1980">HADOOP-1980</a>. 'dfsadmin -safemode enter' should prevent the namenode from
+leaving safemode automatically.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4951">HADOOP-4951</a>. Lease monitor should acquire the LeaseManager lock but not the
+Monitor lock.<br />(szetszwo)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4935">HADOOP-4935</a>. processMisReplicatedBlocks() should not clear
+excessReplicateMap.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4961">HADOOP-4961</a>. Fix ConcurrentModificationException in lease recovery
+of empty files.<br />(shv)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4971">HADOOP-4971</a>. A long (unexpected) delay at datanodes could make subsequent
+block reports from many datanode at the same time.<br />(Raghu Angadi)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4910">HADOOP-4910</a>. NameNode should exclude replicas when choosing excessive
+replicas to delete to avoid data lose.<br />(hairong)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4983">HADOOP-4983</a>. Fixes a problem in updating Counters in the status reporting.<br />(Amareshwari Sriramadasu via ddas)</li>
+      <li><a href="http://issues.apache.org/jira/browse/HADOOP-4924">HADOOP-4924</a>. Fixes a race condition in TaskTracker re-init.<br />(ddas)</li>
     </ol>
   </li>
 </ul>

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docs/cn/hadoop-default.html

@@ -190,30 +190,17 @@ creations/deletions), or "all".</td>
   </td>
 </tr>
 <tr>
-<td><a name="dfs.https.enable">dfs.https.enable</a></td><td>false</td><td>Decide if HTTPS(SSL) is supported on HDFS
-  </td>
-</tr>
-<tr>
-<td><a name="dfs.https.need.client.auth">dfs.https.need.client.auth</a></td><td>false</td><td>Whether SSL client certificate authentication is required
-  </td>
+<td><a name="dfs.datanode.https.address">dfs.datanode.https.address</a></td><td>0.0.0.0:50475</td><td></td>
 </tr>
 <tr>
-<td><a name="dfs.https.server.keystore.resource">dfs.https.server.keystore.resource</a></td><td>ssl-server.xml</td><td>Resource file from which ssl server keystore
-  information will be extracted
-  </td>
+<td><a name="dfs.https.address">dfs.https.address</a></td><td>0.0.0.0:50470</td><td></td>
 </tr>
 <tr>
-<td><a name="dfs.https.client.keystore.resource">dfs.https.client.keystore.resource</a></td><td>ssl-client.xml</td><td>Resource file from which ssl client keystore
-  information will be extracted
+<td><a name="https.keystore.info.rsrc">https.keystore.info.rsrc</a></td><td>sslinfo.xml</td><td>The name of the resource from which ssl keystore information
+  will be extracted
   </td>
 </tr>
 <tr>
-<td><a name="dfs.datanode.https.address">dfs.datanode.https.address</a></td><td>0.0.0.0:50475</td><td></td>
-</tr>
-<tr>
-<td><a name="dfs.https.address">dfs.https.address</a></td><td>0.0.0.0:50470</td><td></td>
-</tr>
-<tr>
 <td><a name="dfs.datanode.dns.interface">dfs.datanode.dns.interface</a></td><td>default</td><td>The name of the Network Interface from which a data node should 
   report its IP address.
   </td>
@@ -455,122 +442,6 @@ creations/deletions), or "all".</td>
   </td>
 </tr>
 <tr>
-<td><a name="mapred.tasktracker.vmem.reserved">mapred.tasktracker.vmem.reserved</a></td><td>-1</td><td>Configuration property to specify the amount of virtual memory
-    that has to be reserved by the TaskTracker for system usage (OS, TT etc).
-    The reserved virtual memory should be a part of the total virtual memory
-    available on the TaskTracker.
-    
-    The reserved virtual memory and the total virtual memory values are
-    reported by the TaskTracker as part of heart-beat so that they can
-    considered by a scheduler. Please refer to the documentation of the
-    configured scheduler to see how this property is used.
-    
-    These two values are also used by a TaskTracker for tracking tasks' memory
-    usage. Memory management functionality on a TaskTracker is disabled if this
-    property is set to -1, if it more than the total virtual memory on the 
-    tasktracker, or if either of the values is negative.
-  </td>
-</tr>
-<tr>
-<td><a name="mapred.tasktracker.pmem.reserved">mapred.tasktracker.pmem.reserved</a></td><td>-1</td><td>Configuration property to specify the amount of physical memory
-    that has to be reserved by the TaskTracker for system usage (OS, TT etc).
-    The reserved physical memory should be a part of the total physical memory
-    available on the TaskTracker.
-
-    The reserved physical memory and the total physical memory values are
-    reported by the TaskTracker as part of heart-beat so that they can
-    considered by a scheduler. Please refer to the documentation of the
-    configured scheduler to see how this property is used.
-  </td>
-</tr>
-<tr>
-<td><a name="mapred.task.default.maxvmem">mapred.task.default.maxvmem</a></td><td>-1</td><td>
-    Cluster-wide configuration in bytes to be set by the administrators that
-    provides default amount of maximum virtual memory for job's tasks. This has
-    to be set on both the JobTracker node for the sake of scheduling decisions
-    and on the TaskTracker nodes for the sake of memory management.
-
-    If a job doesn't specify its virtual memory requirement by setting
-    mapred.task.maxvmem to -1, tasks are assured a memory limit set
-    to this property. This property is set to -1 by default.
-
-    This value should in general be less than the cluster-wide
-    configuration mapred.task.limit.maxvmem. If not or if it is not set,
-    TaskTracker's memory management will be disabled and a scheduler's memory
-    based scheduling decisions may be affected. Please refer to the
-    documentation of the configured scheduler to see how this property is used.
-  </td>
-</tr>
-<tr>
-<td><a name="mapred.task.limit.maxvmem">mapred.task.limit.maxvmem</a></td><td>-1</td><td>
-    Cluster-wide configuration in bytes to be set by the site administrators
-    that provides an upper limit on the maximum virtual memory that can be
-    specified by a job via mapred.task.maxvmem. This has to be set on both the
-    JobTracker node for the sake of scheduling decisions and on the TaskTracker
-    nodes for the sake of memory management.
-    
-    The job configuration mapred.task.maxvmem should not be more than this
-    value, otherwise depending on the scheduler being configured, the job may
-    be rejected or the job configuration may just be ignored. Please refer to
-    the documentation of the configured scheduler to see how this property is
-    used.
-
-    If it is not set a TaskTracker, TaskTracker's memory management will be
-    disabled.
-  </td>
-</tr>
-<tr>
-<td><a name="mapred.task.maxvmem">mapred.task.maxvmem</a></td><td>-1</td><td>
-    The maximum amount of virtual memory any task of a job will use, in bytes.
-
-    This value will be used by TaskTrackers for monitoring the memory usage of
-    tasks of this jobs. If a TaskTracker's memory management functionality is
-    enabled, each task of this job will be allowed to use a maximum virtual
-    memory specified by this property. If the task's memory usage goes over 
-    this value, the task will be failed by the TT. If not set, the
-    cluster-wide configuration mapred.task.default.maxvmem is used as the
-    default value for memory requirements. If this property cascaded with
-    mapred.task.default.maxvmem becomes equal to -1, the job's tasks will
-    not be assured any particular amount of virtual memory and may be killed by
-    a TT that intends to control the total memory usage of the tasks via memory
-    management functionality. If the memory management functionality is
-    disabled on a TT, this value is ignored.
-
-    This value should not be more than the cluster-wide configuration
-    mapred.task.limit.maxvmem.
-
-    This value may be used by schedulers that support scheduling based on job's
-    memory requirements. Please refer to the documentation of the scheduler
-    being configured to see if it does memory based scheduling and if it does,
-    how this property is used by that scheduler.
-  </td>
-</tr>
-<tr>
-<td><a name="mapred.task.maxpmem">mapred.task.maxpmem</a></td><td>-1</td><td>
-   The maximum amount of physical memory any task of a job will use in bytes.
-
-   This value may be used by schedulers that support scheduling based on job's
-   memory requirements. In general, a task of this job will be scheduled on a
-   TaskTracker, only if the amount of physical memory still unoccupied on the
-   TaskTracker is greater than or equal to this value. Different schedulers can
-   take different decisions, some might just ignore this value. Please refer to
-   the documentation of the scheduler being configured to see if it does
-   memory based scheduling and if it does, how this variable is used by that
-   scheduler.
-  </td>
-</tr>
-<tr>
-<td><a name="mapred.tasktracker.memory_calculator_plugin">mapred.tasktracker.memory_calculator_plugin</a></td><td></td><td>
-   Name of the class whose instance will be used to query memory information
-   on the tasktracker.
-   
-   The class must be an instance of 
-   org.apache.hadoop.util.MemoryCalculatorPlugin. If the value is null, the
-   tasktracker attempts to use a class appropriate to the platform. 
-   Currently, the only platform supported is Linux.
-  </td>
-</tr>
-<tr>
 <td><a name="mapred.tasktracker.taskmemorymanager.monitoring-interval">mapred.tasktracker.taskmemorymanager.monitoring-interval</a></td><td>5000</td><td>The interval, in milliseconds, for which the tasktracker waits
    between two cycles of monitoring its tasks' memory usage. Used only if
    tasks' memory management is enabled via mapred.tasktracker.tasks.maxmemory.
@@ -836,14 +707,6 @@ creations/deletions), or "all".</td>
   hosts are excluded.</td>
 </tr>
 <tr>
-<td><a name="mapred.max.tracker.blacklists">mapred.max.tracker.blacklists</a></td><td>4</td><td>The number of blacklists for a taskTracker by various jobs 
-               after which the task tracker could be blacklisted across
-               all jobs. The tracker will be given a tasks later 
-               (after a day). The tracker will become a healthy 
-               tracker after a restart. 
-  </td>
-</tr>
-<tr>
 <td><a name="mapred.max.tracker.failures">mapred.max.tracker.failures</a></td><td>4</td><td>The number of task-failures on a tasktracker of a given job 
                after which new tasks of that job aren't assigned to it.
   </td>

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+<span class="codefrag">dfsadmin -setQuota &lt;N&gt; &lt;directory&gt;...&lt;directory&gt;</span> 
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docs/releasenotes.html

@@ -1,8 +1,154 @@
 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html><head>
-    <title>Hadoop 0.19.0</title></head>
+    <title>Hadoop 0.19.1</title></head>
 <body>
 <font face="sans-serif">
+
+<h1>Hadoop 0.19.1 Release Notes</h1>
+Hadoop 0.19.1 fixes serveral problems that may lead to data loss
+from the file system and makes some incompatible changes from Hadoop 0.19.0. For instance, the file append API has been disabled in this release due to implementation issues that can lead to data loss.
+The bug fixes are listed below.
+<ul>
+<h2>Changes Since Hadoop 0.19.0</h2>
+<h3>        Bug
+</h3>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-3874'>HADOOP-3874</a>] -         TestFileAppend2.testComplexAppend sometimes fails
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4061'>HADOOP-4061</a>] -         Large number of decommission freezes the Namenode
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4420'>HADOOP-4420</a>] -         JobTracker.killJob() doesn't check for the JobID being valid
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4494'>HADOOP-4494</a>] -         libhdfs does not call FileSystem.append when O_APPEND passed to hdfsOpenFile
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4508'>HADOOP-4508</a>] -         FSDataOutputStream.getPos() == 0when appending to existing file and should be file length
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4616'>HADOOP-4616</a>] -         assertion makes fuse-dfs exit when reading incomplete data
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4619'>HADOOP-4619</a>] -         hdfs_write infinite loop when dfs fails and cannot write files &gt; 2 GB
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4632'>HADOOP-4632</a>] -         TestJobHistoryVersion should not create directory in current dir.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4635'>HADOOP-4635</a>] -         Memory leak ?
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4680'>HADOOP-4680</a>] -         fuse-dfs - df -kh on hdfs mount shows much less %used than the dfs UI
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4681'>HADOOP-4681</a>] -         DFSClient block read failures cause open DFSInputStream to become unusable
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4697'>HADOOP-4697</a>] -         KFS::getBlockLocations() fails with files having multiple blocks
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4715'>HADOOP-4715</a>] -         Fix quickstart.html to reflect that Hadoop works with Java 1.6.x now
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4720'>HADOOP-4720</a>] -         docs/api does not contain the hdfs directory after building
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4727'>HADOOP-4727</a>] -         Groups do not work for fuse-dfs out of the box on 0.19.0
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4731'>HADOOP-4731</a>] -         Job is not removed from the waiting jobs queue upon completion.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4759'>HADOOP-4759</a>] -         HADOOP-4654 to be fixed for branches &gt;= 0.19
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4760'>HADOOP-4760</a>] -         HDFS streams should not throw exceptions when closed twice
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4797'>HADOOP-4797</a>] -         RPC Server can leave a lot of direct buffers 
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4821'>HADOOP-4821</a>] -         Usage description in the Quotas guide documentations are incorrect
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4836'>HADOOP-4836</a>] -         Minor typos in documentation and comments
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4847'>HADOOP-4847</a>] -         OutputCommitter is loaded in the TaskTracker in localizeConfiguration
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4862'>HADOOP-4862</a>] -         A spurious IOException log on DataNode is not completely removed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4873'>HADOOP-4873</a>] -         display minMaps/Reduces on advanced scheduler page
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4906'>HADOOP-4906</a>] -         TaskTracker running out of memory after running several tasks
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4918'>HADOOP-4918</a>] -         Fix bzip2 work with SequenceFile
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4924'>HADOOP-4924</a>] -         Race condition in re-init of TaskTracker
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4943'>HADOOP-4943</a>] -         fair share scheduler does not utilize all slots if the task trackers are configured heterogeneously
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4955'>HADOOP-4955</a>] -         Make DBOutputFormat us column names from setOutput(...)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4965'>HADOOP-4965</a>] -         DFSClient should log instead of printing into std err.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4966'>HADOOP-4966</a>] -         Setup tasks are not removed from JobTracker's taskIdToTIPMap even after the job completes
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4967'>HADOOP-4967</a>] -         Inconsistent state in JVM manager
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4976'>HADOOP-4976</a>] -         Mapper runs out of memory
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4982'>HADOOP-4982</a>] -         TestFsck does not run in Eclipse.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4983'>HADOOP-4983</a>] -         Job counters sometimes go down as tasks run without task failures
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4992'>HADOOP-4992</a>] -         TestCustomOutputCommitter fails on hadoop-0.19
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5002'>HADOOP-5002</a>] -         2 core tests TestFileOutputFormat and TestHarFileSystem are failing in branch 19
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5008'>HADOOP-5008</a>] -         TestReplication#testPendingReplicationRetry leaves an opened fd unclosed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5009'>HADOOP-5009</a>] -         DataNode#shutdown sometimes leaves data block scanner verification log unclosed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5067'>HADOOP-5067</a>] -         Failed/Killed attempts column in jobdetails.jsp does not show the number of failed/killed attempts correctly
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5134'>HADOOP-5134</a>] -         FSNamesystem#commitBlockSynchronization adds under-construction block locations to blocksMap
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5156'>HADOOP-5156</a>] -         TestHeartbeatHandling uses MiniDFSCluster.getNamesystem() which does not exist in branch 0.20
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5161'>HADOOP-5161</a>] -         Accepted sockets do not get placed in DataXceiverServer#childSockets
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5166'>HADOOP-5166</a>] -         JobTracker fails to restart if recovery and ACLs are enabled
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5192'>HADOOP-5192</a>] -         Block reciever should not remove a finalized block when block replication fails
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5193'>HADOOP-5193</a>] -         SecondaryNameNode does not rollImage because of incorrect calculation of edits modification time.
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5213'>HADOOP-5213</a>] -         BZip2CompressionOutputStream NullPointerException
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5224'>HADOOP-5224</a>] -         Disable append
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5225'>HADOOP-5225</a>] -         workaround for tmp file handling on DataNodes in 0.19.1 (HADOOP-4663)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5233'>HADOOP-5233</a>] -         Reducer not Succeded after 100%
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5235'>HADOOP-5235</a>] -         possible NPE in tip.kill()
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5241'>HADOOP-5241</a>] -         Reduce tasks get stuck because of over-estimated task size (regression from 0.18)
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5269'>HADOOP-5269</a>] -         TaskTracker.runningTasks holding FAILED_UNCLEAN and KILLED_UNCLEAN taskStatuses forever in some cases.
+</li>
+</ul>
+    
+<h3>        Improvement
+</h3>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-3894'>HADOOP-3894</a>] -         DFSClient chould log errors better, and provide better diagnostics
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4482'>HADOOP-4482</a>] -         Hadoop JMX usage makes Nagios monitoring impossible
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4675'>HADOOP-4675</a>] -         Current Ganglia metrics implementation is incompatible with Ganglia 3.1
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4739'>HADOOP-4739</a>] -         Minor enhancements to some sections of the Map/Reduce tutorial
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-4751'>HADOOP-4751</a>] -         FileSystem.listStatus should report the current length of a file if it has been sync'd
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5086'>HADOOP-5086</a>] -         Trash URI semantics can be relaxed
+</li>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5127'>HADOOP-5127</a>] -         FSDirectory should not have public methods.
+</li>
+</ul>
+    
+<h3>        New Feature
+</h3>
+<ul>
+<li>[<a href='https://issues.apache.org/jira/browse/HADOOP-5034'>HADOOP-5034</a>] -         NameNode should send both replication and deletion requests to DataNode in one reply to a heartbeat
+</li>
+</ul>
+</ul>
+                            
+
     <h1>Hadoop 0.19.0 Release Notes</h1>
 
 These release notes include new developer and user facing incompatibilities, features, and major improvements.