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<h1>Apache Hadoop Changelog</h1>
<div class="section">
<h2><a name="Release_1.1.0_-_2012-10-13"></a>Release 1.1.0 - 2012-10-13</h2>
<div class="section">
<h3><a name="INCOMPATIBLE_CHANGES:"></a>INCOMPATIBLE CHANGES:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5464">HADOOP-5464</a> </td>
<td align="left"> DFSClient does not treat write timeout of 0 properly </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Raghu Angadi </td>
<td align="left"> Raghu Angadi </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3044">HDFS-3044</a> </td>
<td align="left"> fsck move should be non-destructive by default </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Eli Collins </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8154">HADOOP-8154</a> </td>
<td align="left"> DNS#getIPs shouldn&#x2019;t silently return the local host IP for bogus interface names </td>
<td align="left"> Major </td>
<td align="left"> conf </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8314">HADOOP-8314</a> </td>
<td align="left"> HttpServer#hasAdminAccess should return false if authorization is enabled but user is not authenticated </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Alejandro Abdelnur </td>
<td align="left"> Alejandro Abdelnur </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8230">HADOOP-8230</a> </td>
<td align="left"> Enable sync by default and disable append </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3522">HDFS-3522</a> </td>
<td align="left"> If NN is in safemode, it should throw SafeModeException when getBlockLocations has zero locations </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Brandon Li </td>
<td align="left"> Brandon Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8365">HADOOP-8365</a> </td>
<td align="left"> Add flag to disable durable sync </td>
<td align="left"> Blocker </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8552">HADOOP-8552</a> </td>
<td align="left"> Conflict: Same security.log.file for multiple users. </td>
<td align="left"> Major </td>
<td align="left"> conf, security </td>
<td align="left"> Karthik Kambatla </td>
<td align="left"> Karthik Kambatla </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2617">HDFS-2617</a> </td>
<td align="left"> Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based solution </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Jakob Homan </td>
<td align="left"> Jakob Homan </td></tr>
</tbody>
</table></div>
<div class="section">
<h3><a name="NEW_FEATURES:"></a>NEW FEATURES:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3118">MAPREDUCE-3118</a> </td>
<td align="left"> Backport Gridmix and Rumen features from trunk to Hadoop 0.20 security branch </td>
<td align="left"> Major </td>
<td align="left"> contrib/gridmix, tools/rumen </td>
<td align="left"> Ravi Gummadi </td>
<td align="left"> Ravi Gummadi </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7806">HADOOP-7806</a> </td>
<td align="left"> Support binding to sub-interfaces </td>
<td align="left"> Major </td>
<td align="left"> util </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3148">HDFS-3148</a> </td>
<td align="left"> The client should be able to use multiple local interfaces for data transfer </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client, performance </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3055">HDFS-3055</a> </td>
<td align="left"> Implement recovery mode for branch-1 </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Colin P. McCabe </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3837">MAPREDUCE-3837</a> </td>
<td align="left"> Job tracker is not able to recover job in case of crash and after that no user can submit job. </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Mayank Bansal </td>
<td align="left"> Mayank Bansal </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7823">HADOOP-7823</a> </td>
<td align="left"> port HADOOP-4012 to branch-1 (splitting support for bzip2) </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Tim Broberg </td>
<td align="left"> Andrew Purtell </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3150">HDFS-3150</a> </td>
<td align="left"> Add option for clients to contact DNs via hostname </td>
<td align="left"> Major </td>
<td align="left"> datanode, hdfs-client </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
</tbody>
</table></div>
<div class="section">
<h3><a name="IMPROVEMENTS:"></a>IMPROVEMENTS:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-782">MAPREDUCE-782</a> </td>
<td align="left"> Use PureJavaCrc32 in mapreduce spills </td>
<td align="left"> Minor </td>
<td align="left"> performance </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-496">HDFS-496</a> </td>
<td align="left"> Use PureJavaCrc32 in HDFS </td>
<td align="left"> Minor </td>
<td align="left"> datanode, hdfs-client, performance </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-1906">MAPREDUCE-1906</a> </td>
<td align="left"> Lower default minimum heartbeat interval for tasktracker &gt; Jobtracker </td>
<td align="left"> Major </td>
<td align="left"> jobtracker, performance, tasktracker </td>
<td align="left"> Scott Carey </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6995">HADOOP-6995</a> </td>
<td align="left"> Allow wildcards to be used in ProxyUsers configurations </td>
<td align="left"> Minor </td>
<td align="left"> security </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2103">MAPREDUCE-2103</a> </td>
<td align="left"> task-controller shouldn&#x2019;t require o-r permissions </td>
<td align="left"> Trivial </td>
<td align="left"> task-controller </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2836">MAPREDUCE-2836</a> </td>
<td align="left"> Provide option to fail jobs when submitted to non-existent pools. </td>
<td align="left"> Minor </td>
<td align="left"> contrib/fair-share </td>
<td align="left"> Jeff Bean </td>
<td align="left"> Ahmed Radwan </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7509">HADOOP-7509</a> </td>
<td align="left"> Improve message when Authentication is required </td>
<td align="left"> Trivial </td>
<td align="left"> . </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2465">HDFS-2465</a> </td>
<td align="left"> Add HDFS support for fadvise readahead and drop-behind </td>
<td align="left"> Major </td>
<td align="left"> datanode, performance </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3278">MAPREDUCE-3278</a> </td>
<td align="left"> 0.20: avoid a busy-loop in ReduceTask scheduling </td>
<td align="left"> Major </td>
<td align="left"> mrv1, performance, task </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3365">MAPREDUCE-3365</a> </td>
<td align="left"> Uncomment eventlog settings from the documentation </td>
<td align="left"> Trivial </td>
<td align="left"> contrib/fair-share </td>
<td align="left"> Sho Shimauchi </td>
<td align="left"> Sho Shimauchi </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3395">MAPREDUCE-3395</a> </td>
<td align="left"> Add mapred.disk.healthChecker.interval to mapred-default.xml </td>
<td align="left"> Trivial </td>
<td align="left"> documentation </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3394">MAPREDUCE-3394</a> </td>
<td align="left"> Add log guard for a debug message in ReduceTask </td>
<td align="left"> Trivial </td>
<td align="left"> task </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2638">HDFS-2638</a> </td>
<td align="left"> Improve a block recovery log </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2653">HDFS-2653</a> </td>
<td align="left"> DFSClient should cache whether addrs are non-local when short-circuiting is enabled </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2654">HDFS-2654</a> </td>
<td align="left"> Make BlockReaderLocal not extend RemoteBlockReader2 </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3597">MAPREDUCE-3597</a> </td>
<td align="left"> Provide a way to access other info of history file from Rumentool </td>
<td align="left"> Major </td>
<td align="left"> tools/rumen </td>
<td align="left"> Ravi Gummadi </td>
<td align="left"> Ravi Gummadi </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2919">MAPREDUCE-2919</a> </td>
<td align="left"> The JT web UI should show job start times </td>
<td align="left"> Minor </td>
<td align="left"> jobtracker </td>
<td align="left"> Eli Collins </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2872">HDFS-2872</a> </td>
<td align="left"> Add sanity checks during edits loading that generation stamps are non-decreasing </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4001">MAPREDUCE-4001</a> </td>
<td align="left"> Improve MAPREDUCE-3789&#x2019;s fix logic by looking at job&#x2019;s slot demands instead </td>
<td align="left"> Minor </td>
<td align="left"> capacity-sched </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2835">MAPREDUCE-2835</a> </td>
<td align="left"> Make per-job counter limits configurable </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Tom White </td>
<td align="left"> Tom White </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3131">HDFS-3131</a> </td>
<td align="left"> Improve TestStorageRestore </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Brandon Li </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-1378">HDFS-1378</a> </td>
<td align="left"> Edit log replay should track and report file offsets in case of errors </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8209">HADOOP-8209</a> </td>
<td align="left"> Add option to relax build-version check for branch-1 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3094">HDFS-3094</a> </td>
<td align="left"> add -nonInteractive and -force option to namenode -format command </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Arpit Gupta </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8430">HADOOP-8430</a> </td>
<td align="left"> Backport new FileSystem methods introduced by HADOOP-8014 to branch-1 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3504">HDFS-3504</a> </td>
<td align="left"> Configurable retry in DFSClient </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Siddharth Seth </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3516">HDFS-3516</a> </td>
<td align="left"> Check content-type in WebHdfsFileSystem </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client, webhdfs </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3596">HDFS-3596</a> </td>
<td align="left"> Improve FSEditLog pre-allocation in branch-1 </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Colin P. McCabe </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3617">HDFS-3617</a> </td>
<td align="left"> Port HDFS-96 to branch-1 (support blocks greater than 2GB) </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Matt Foley </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3667">HDFS-3667</a> </td>
<td align="left"> Add retry support to WebHdfsFileSystem </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3289">MAPREDUCE-3289</a> </td>
<td align="left"> Make use of fadvise in the NM&#x2019;s shuffle handler </td>
<td align="left"> Major </td>
<td align="left"> mrv2, nodemanager, performance </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8656">HADOOP-8656</a> </td>
<td align="left"> backport forced daemon shutdown of HADOOP-8353 into branch-1 </td>
<td align="left"> Minor </td>
<td align="left"> bin </td>
<td align="left"> Steve Loughran </td>
<td align="left"> Roman Shaposhnik </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4511">MAPREDUCE-4511</a> </td>
<td align="left"> Add IFile readahead </td>
<td align="left"> Major </td>
<td align="left"> mrv1, mrv2, performance </td>
<td align="left"> Ahmed Radwan </td>
<td align="left"> Ahmed Radwan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3814">HDFS-3814</a> </td>
<td align="left"> Make the replication monitor multipliers configurable in 1.x </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Suresh Srinivas </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4328">MAPREDUCE-4328</a> </td>
<td align="left"> Add the option to quiesce the JobTracker </td>
<td align="left"> Major </td>
<td align="left"> mrv1 </td>
<td align="left"> Arun C Murthy </td>
<td align="left"> Arun C Murthy </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8748">HADOOP-8748</a> </td>
<td align="left"> Move dfsclient retry to a util class </td>
<td align="left"> Minor </td>
<td align="left"> io </td>
<td align="left"> Arun C Murthy </td>
<td align="left"> Arun C Murthy </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3871">HDFS-3871</a> </td>
<td align="left"> Change NameNodeProxies to use HADOOP-8748 </td>
<td align="left"> Minor </td>
<td align="left"> hdfs-client </td>
<td align="left"> Arun C Murthy </td>
<td align="left"> Arun C Murthy </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3703">HDFS-3703</a> </td>
<td align="left"> Decrease the datanode failure detection time </td>
<td align="left"> Major </td>
<td align="left"> datanode, namenode </td>
<td align="left"> Nicolas Liochon </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4603">MAPREDUCE-4603</a> </td>
<td align="left"> Allow JobClient to retry job-submission when JT is in safemode </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Arun C Murthy </td>
<td align="left"> Arun C Murthy </td></tr>
</tbody>
</table></div>
<div class="section">
<h3><a name="BUG_FIXES:"></a>BUG FIXES:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5836">HADOOP-5836</a> </td>
<td align="left"> Bug in S3N handling of directory markers using an object with a trailing &#x201c;/&#x201d; causes jobs to fail </td>
<td align="left"> Major </td>
<td align="left"> fs/s3 </td>
<td align="left"> Ian Nowland </td>
<td align="left"> Ian Nowland </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6546">HADOOP-6546</a> </td>
<td align="left"> BloomMapFile can return false negatives </td>
<td align="left"> Major </td>
<td align="left"> io </td>
<td align="left"> Clark Jefcoat </td>
<td align="left"> Clark Jefcoat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6947">HADOOP-6947</a> </td>
<td align="left"> Kerberos relogin should set refreshKrb5Config to true </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2305">HDFS-2305</a> </td>
<td align="left"> Running multiple 2NNs can result in corrupt file system </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7629">HADOOP-7629</a> </td>
<td align="left"> regression with MAPREDUCE-2289 - setPermission passed immutable FsPermission (rpc failure) </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Patrick Hunt </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7634">HADOOP-7634</a> </td>
<td align="left"> Cluster setup docs specify wrong owner for task-controller.cfg </td>
<td align="left"> Minor </td>
<td align="left"> documentation, security </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7665">HADOOP-7665</a> </td>
<td align="left"> branch-0.20-security doesn&#x2019;t include SPNEGO settings in core-default.xml </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7666">HADOOP-7666</a> </td>
<td align="left"> branch-0.20-security doesn&#x2019;t include o.a.h.security.TestAuthenticationFilter </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7621">HADOOP-7621</a> </td>
<td align="left"> alfredo config should be in a file not readable by users </td>
<td align="left"> Critical </td>
<td align="left"> security </td>
<td align="left"> Alejandro Abdelnur </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7653">HADOOP-7653</a> </td>
<td align="left"> tarball doesn&#x2019;t include .eclipse.templates </td>
<td align="left"> Minor </td>
<td align="left"> build </td>
<td align="left"> Jonathan Natkins </td>
<td align="left"> Jonathan Natkins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2932">MAPREDUCE-2932</a> </td>
<td align="left"> Missing instrumentation plugin class shouldn&#x2019;t crash the TT startup per design </td>
<td align="left"> Trivial </td>
<td align="left"> tasktracker </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7745">HADOOP-7745</a> </td>
<td align="left"> I switched variable names in HADOOP-7509 </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3405">MAPREDUCE-3405</a> </td>
<td align="left"> MAPREDUCE-3015 broke compilation of contrib scheduler tests </td>
<td align="left"> Critical </td>
<td align="left"> capacity-sched, contrib/fair-share </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3419">MAPREDUCE-3419</a> </td>
<td align="left"> Don&#x2019;t mark exited TT threads as dead in MiniMRCluster </td>
<td align="left"> Major </td>
<td align="left"> tasktracker, test </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7297">HADOOP-7297</a> </td>
<td align="left"> Error in the documentation regarding Checkpoint/Backup Node </td>
<td align="left"> Trivial </td>
<td align="left"> documentation </td>
<td align="left"> arnaud p </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2541">HDFS-2541</a> </td>
<td align="left"> For a sufficiently large value of blocks, the DN Scanner may request a random number with a negative seed value. </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2905">MAPREDUCE-2905</a> </td>
<td align="left"> CapBasedLoadManager incorrectly allows assignment when assignMultiple is true (was: assignmultiple per job) </td>
<td align="left"> Major </td>
<td align="left"> contrib/fair-share </td>
<td align="left"> Jeff Bean </td>
<td align="left"> Jeff Bean </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2806">MAPREDUCE-2806</a> </td>
<td align="left"> [Gridmix] Load job fails with timeout errors when resource emulation is turned on </td>
<td align="left"> Major </td>
<td align="left"> contrib/gridmix </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7870">HADOOP-7870</a> </td>
<td align="left"> fix SequenceFile#createWriter with boolean createParent arg to respect createParent. </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jonathan Hsieh </td>
<td align="left"> Jonathan Hsieh </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7879">HADOOP-7879</a> </td>
<td align="left"> DistributedFileSystem#createNonRecursive should also incrementWriteOps statistics. </td>
<td align="left"> Trivial </td>
<td align="left"> . </td>
<td align="left"> Jonathan Hsieh </td>
<td align="left"> Jonathan Hsieh </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2637">HDFS-2637</a> </td>
<td align="left"> The rpc timeout for block recovery is too low </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7898">HADOOP-7898</a> </td>
<td align="left"> Fix javadoc warnings in AuthenticationToken.java </td>
<td align="left"> Minor </td>
<td align="left"> security </td>
<td align="left"> Suresh Srinivas </td>
<td align="left"> Suresh Srinivas </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7908">HADOOP-7908</a> </td>
<td align="left"> Fix three javadoc warnings on branch-1 </td>
<td align="left"> Trivial </td>
<td align="left"> documentation </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2547">HDFS-2547</a> </td>
<td align="left"> ReplicationTargetChooser has incorrect block placement comments </td>
<td align="left"> Trivial </td>
<td align="left"> namenode </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2728">HDFS-2728</a> </td>
<td align="left"> Remove dfsadmin -printTopology from branch-1 docs since it does not exist </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2741">HDFS-2741</a> </td>
<td align="left"> dfs.datanode.max.xcievers missing in 0.20.205.0 </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Markus Jelsma </td>
<td align="left"> </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-1910">HDFS-1910</a> </td>
<td align="left"> when dfs.name.dir and dfs.name.edits.dir are same fsimage will be saved twice every time </td>
<td align="left"> Minor </td>
<td align="left"> namenode </td>
<td align="left"> Gokul </td>
<td align="left"> </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2790">HDFS-2790</a> </td>
<td align="left"> FSNamesystem.setTimes throws exception with wrong configuration name in the message </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Arpit Gupta </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7982">HADOOP-7982</a> </td>
<td align="left"> UserGroupInformation fails to login if thread&#x2019;s context classloader can&#x2019;t load HadoopLoginModule </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2751">HDFS-2751</a> </td>
<td align="left"> Datanode drops OS cache behind reads even for short reads </td>
<td align="left"> Major </td>
<td align="left"> datanode </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7988">HADOOP-7988</a> </td>
<td align="left"> Upper case in hostname part of the principals doesn&#x2019;t work with kerberos. </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Jitendra Nath Pandey </td>
<td align="left"> Jitendra Nath Pandey </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2877">HDFS-2877</a> </td>
<td align="left"> If locking of a storage dir fails, it will remove the other NN&#x2019;s lock file on exit </td>
<td align="left"> Major </td>
<td align="left"> namenode </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3789">MAPREDUCE-3789</a> </td>
<td align="left"> CapacityTaskScheduler may perform unnecessary reservations in heterogenous tracker environments </td>
<td align="left"> Critical </td>
<td align="left"> capacity-sched, scheduler </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2869">HDFS-2869</a> </td>
<td align="left"> Error in Webhdfs documentation for mkdir </td>
<td align="left"> Minor </td>
<td align="left"> webhdfs </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3008">HDFS-3008</a> </td>
<td align="left"> Negative caching of local addrs doesn&#x2019;t work </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3078">HDFS-3078</a> </td>
<td align="left"> 2NN https port setting is broken </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-1740">MAPREDUCE-1740</a> </td>
<td align="left"> NPE in getMatchingLevelForNodes when node locations are variable depth </td>
<td align="left"> Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Ahmed Radwan </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8159">HADOOP-8159</a> </td>
<td align="left"> NetworkTopology: getLeaf should check for invalid topologies </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Colin P. McCabe </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4087">MAPREDUCE-4087</a> </td>
<td align="left"> [Gridmix] GenerateDistCacheData job of Gridmix can become slow in some cases </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Ravi Gummadi </td>
<td align="left"> Ravi Gummadi </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4095">MAPREDUCE-4095</a> </td>
<td align="left"> TestJobInProgress#testLocality uses a bogus topology </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Eli Collins </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3176">HDFS-3176</a> </td>
<td align="left"> JsonUtil should not parse the MD5MD5CRC32FileChecksum bytes on its own. </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8269">HADOOP-8269</a> </td>
<td align="left"> Fix some javadoc warnings on branch-1 </td>
<td align="left"> Trivial </td>
<td align="left"> documentation </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3674">MAPREDUCE-3674</a> </td>
<td align="left"> If invoked with no queueName request param, jobqueue_details.jsp injects a null queue name into schedulers. </td>
<td align="left"> Critical </td>
<td align="left"> jobtracker </td>
<td align="left"> Harsh J </td>
<td align="left"> Harsh J </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4088">MAPREDUCE-4088</a> </td>
<td align="left"> Task stuck in JobLocalizer prevented other tasks on the same node from committing </td>
<td align="left"> Critical </td>
<td align="left"> mrv1 </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4241">MAPREDUCE-4241</a> </td>
<td align="left"> Pipes examples do not compile on Ubuntu 12.04 </td>
<td align="left"> Major </td>
<td align="left"> build, examples </td>
<td align="left"> Andrew Bayer </td>
<td align="left"> Andrew Bayer </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3330">HDFS-3330</a> </td>
<td align="left"> If GetImageServlet throws an Error or RTE, response has HTTP &#x201c;OK&#x201d; status </td>
<td align="left"> Critical </td>
<td align="left"> namenode </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8329">HADOOP-8329</a> </td>
<td align="left"> Build fails with Java 7 </td>
<td align="left"> Major </td>
<td align="left"> build </td>
<td align="left"> Kumar Ravi </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3453">HDFS-3453</a> </td>
<td align="left"> HDFS does not use ClientProtocol in a backward-compatible way </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Kihwal Lee </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8445">HADOOP-8445</a> </td>
<td align="left"> Token should not print the password in toString </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Ravi Prakash </td>
<td align="left"> Ravi Prakash </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2377">MAPREDUCE-2377</a> </td>
<td align="left"> task-controller fails to parse configuration if it doesn&#x2019;t end in \n </td>
<td align="left"> Major </td>
<td align="left"> task-controller </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Benoy Antony </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3518">HDFS-3518</a> </td>
<td align="left"> Provide API to check HDFS operational state </td>
<td align="left"> Major </td>
<td align="left"> hdfs-client </td>
<td align="left"> Bikas Saha </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3551">HDFS-3551</a> </td>
<td align="left"> WebHDFS CREATE does not use client location for redirection </td>
<td align="left"> Major </td>
<td align="left"> webhdfs </td>
<td align="left"> Tsz Wo Nicholas Sze </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-6527">HADOOP-6527</a> </td>
<td align="left"> UserGroupInformation::createUserForTesting clobbers already defined group mappings </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Jakob Homan </td>
<td align="left"> Ivan Mitic </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2129">MAPREDUCE-2129</a> </td>
<td align="left"> Job may hang if mapreduce.job.committer.setup.cleanup.needed=false and mapreduce.map/reduce.failures.maxpercent&gt;0 </td>
<td align="left"> Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Kang Xiao </td>
<td align="left"> Subroto Sanyal </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8417">HADOOP-8417</a> </td>
<td align="left"> HADOOP-6963 didn&#x2019;t update hadoop-core-pom-template.xml </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Ted Yu </td>
<td align="left"> Ted Yu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8399">HADOOP-8399</a> </td>
<td align="left"> Remove JDK5 dependency from Hadoop 1.0+ line </td>
<td align="left"> Major </td>
<td align="left"> build </td>
<td align="left"> Konstantin Boudnik </td>
<td align="left"> Konstantin Boudnik </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2903">MAPREDUCE-2903</a> </td>
<td align="left"> Map Tasks graph is throwing XML Parse error when Job is executed with 0 maps </td>
<td align="left"> Major </td>
<td align="left"> jobtracker </td>
<td align="left"> Devaraj K </td>
<td align="left"> Devaraj K </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-8617">HADOOP-8617</a> </td>
<td align="left"> backport pure Java CRC32 calculator changes to branch-1 </td>
<td align="left"> Major </td>
<td align="left"> performance </td>
<td align="left"> Brandon Li </td>
<td align="left"> Brandon Li </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4400">MAPREDUCE-4400</a> </td>
<td align="left"> Fix performance regression for small jobs/workflows </td>
<td align="left"> Major </td>
<td align="left"> performance, task </td>
<td align="left"> Luke Lu </td>
<td align="left"> Luke Lu </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3696">HDFS-3696</a> </td>
<td align="left"> Create files with WebHdfsFileSystem goes OOM when file size is big </td>
<td align="left"> Critical </td>
<td align="left"> webhdfs </td>
<td align="left"> Kihwal Lee </td>
<td align="left"> Tsz Wo Nicholas Sze </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4558">MAPREDUCE-4558</a> </td>
<td align="left"> TestJobTrackerSafeMode is failing </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Siddharth Seth </td>
<td align="left"> Siddharth Seth </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3466">HDFS-3466</a> </td>
<td align="left"> The SPNEGO filter for the NameNode should come out of the web keytab file </td>
<td align="left"> Major </td>
<td align="left"> namenode, security </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Owen O&#x2019;Malley </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3966">HDFS-3966</a> </td>
<td align="left"> For branch-1, TestFileCreation should use JUnit4 to make assumeTrue work </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Jing Zhao </td>
<td align="left"> Jing Zhao </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3698">HDFS-3698</a> </td>
<td align="left"> TestHftpFileSystem is failing in branch-1 due to changed default secure port </td>
<td align="left"> Major </td>
<td align="left"> security </td>
<td align="left"> Aaron T. Myers </td>
<td align="left"> Aaron T. Myers </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4673">MAPREDUCE-4673</a> </td>
<td align="left"> make TestRawHistoryFile and TestJobHistoryServer more robust </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Arpit Gupta </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4675">MAPREDUCE-4675</a> </td>
<td align="left"> TestKillSubProcesses fails as the process is still alive after the job is done </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Arpit Gupta </td>
<td align="left"> Bikas Saha </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3701">HDFS-3701</a> </td>
<td align="left"> HDFS may miss the final block when reading a file opened for writing if one of the datanode is dead </td>
<td align="left"> Critical </td>
<td align="left"> hdfs-client </td>
<td align="left"> Nicolas Liochon </td>
<td align="left"> Nicolas Liochon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-4698">MAPREDUCE-4698</a> </td>
<td align="left"> TestJobHistoryConfig throws Exception in testJobHistoryLogging </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Gopal V </td>
<td align="left"> Gopal V </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3461">HDFS-3461</a> </td>
<td align="left"> HFTP should use the same port &amp; protocol for getting the delegation token </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Owen O&#x2019;Malley </td>
<td align="left"> Owen O&#x2019;Malley </td></tr>
</tbody>
</table></div>
<div class="section">
<h3><a name="TESTS:"></a>TESTS:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2073">MAPREDUCE-2073</a> </td>
<td align="left"> TestTrackerDistributedCacheManager should be up-front about requirements on build environment </td>
<td align="left"> Trivial </td>
<td align="left"> distributed-cache, test </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-2332">HDFS-2332</a> </td>
<td align="left"> Add test for HADOOP-7629: using an immutable FsPermission as an IPC parameter </td>
<td align="left"> Major </td>
<td align="left"> test </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-3129">HDFS-3129</a> </td>
<td align="left"> NetworkTopology: add test that getLeaf should check for invalid topologies </td>
<td align="left"> Minor </td>
<td align="left"> . </td>
<td align="left"> Colin P. McCabe </td>
<td align="left"> Colin P. McCabe </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7942">HADOOP-7942</a> </td>
<td align="left"> enabling clover coverage reports fails hadoop unit test compilation </td>
<td align="left"> Major </td>
<td align="left"> . </td>
<td align="left"> Giridharan Kesavan </td>
<td align="left"> Jitendra Nath Pandey </td></tr>
</tbody>
</table></div>
<div class="section">
<h3><a name="SUB-TASKS:"></a>SUB-TASKS:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3008">MAPREDUCE-3008</a> </td>
<td align="left"> [Gridmix] Improve cumulative CPU usage emulation for short running tasks </td>
<td align="left"> Major </td>
<td align="left"> contrib/gridmix </td>
<td align="left"> Amar Kamat </td>
<td align="left"> Amar Kamat </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2957">MAPREDUCE-2957</a> </td>
<td align="left"> The TT should not re-init if it has no good local dirs </td>
<td align="left"> Major </td>
<td align="left"> tasktracker </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7753">HADOOP-7753</a> </td>
<td align="left"> Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class </td>
<td align="left"> Major </td>
<td align="left"> io, native, performance </td>
<td align="left"> Todd Lipcon </td>
<td align="left"> Todd Lipcon </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2850">MAPREDUCE-2850</a> </td>
<td align="left"> Add test for TaskTracker disk failure handling (MR-2413) </td>
<td align="left"> Major </td>
<td align="left"> tasktracker </td>
<td align="left"> Eli Collins </td>
<td align="left"> Ravi Gummadi </td></tr>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3015">MAPREDUCE-3015</a> </td>
<td align="left"> Add local dir failure info to metrics and the web UI </td>
<td align="left"> Major </td>
<td align="left"> tasktracker </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
<tr class="a">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-3424">MAPREDUCE-3424</a> </td>
<td align="left"> Some LinuxTaskController cleanup </td>
<td align="left"> Minor </td>
<td align="left"> tasktracker </td>
<td align="left"> Eli Collins </td>
<td align="left"> Eli Collins </td></tr>
</tbody>
</table></div>
<div class="section">
<h3><a name="OTHER:"></a>OTHER:</h3>
<table border="0" class="bodyTable">
<thead>
<tr class="a">
<th align="left"> JIRA </th>
<th align="left"> Summary </th>
<th align="left"> Priority </th>
<th align="left"> Component </th>
<th align="left"> Reporter </th>
<th align="left"> Contributor </th></tr>
</thead><tbody>
<tr class="b">
<td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-2517">MAPREDUCE-2517</a> </td>
<td align="left"> Porting Gridmix v3 system tests into trunk branch. </td>
<td align="left"> Major </td>
<td align="left"> contrib/gridmix </td>
<td align="left"> Vinay Kumar Thota </td>
<td align="left"> Vinay Kumar Thota </td></tr>
</tbody>
</table></div></div>
</div>
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