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| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| --> |
| <h1>Apache Hadoop Changelog</h1> |
| <div class="section"> |
| <h2><a name="Release_0.1.0_-_2006-04-02"></a>Release 0.1.0 - 2006-04-02</h2> |
| <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/HADOOP-37">HADOOP-37</a> </td> |
| <td align="left"> A way to determine the size and overall activity of the cluster </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-80">HADOOP-80</a> </td> |
| <td align="left"> binary key </td> |
| <td align="left"> Major </td> |
| <td align="left"> io </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-44">HADOOP-44</a> </td> |
| <td align="left"> RPC exceptions should include remote stack trace </td> |
| <td align="left"> Major </td> |
| <td align="left"> ipc </td> |
| <td align="left"> Doug Cutting </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-46">HADOOP-46</a> </td> |
| <td align="left"> user-specified job names </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Doug Cutting </td> |
| <td align="left"> Owen O’Malley </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/HADOOP-25">HADOOP-25</a> </td> |
| <td align="left"> a new map/reduce example and moving the examples from src/java to src/examples </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-20">HADOOP-20</a> </td> |
| <td align="left"> Mapper, Reducer need an occasion to cleanup after the last record is processed. </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Michel Tourn </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-30">HADOOP-30</a> </td> |
| <td align="left"> DFS shell: support for ls -r and cat </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Michel Tourn </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-38">HADOOP-38</a> </td> |
| <td align="left"> default splitter should incorporate fs block size </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Doug Cutting </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-36">HADOOP-36</a> </td> |
| <td align="left"> Adding some uniformity/convenience to environment management </td> |
| <td align="left"> Major </td> |
| <td align="left"> conf </td> |
| <td align="left"> Bryan Pendleton </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-49">HADOOP-49</a> </td> |
| <td align="left"> JobClient cannot use a non-default server (unlike DFSShell) </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Michel Tourn </td> |
| <td align="left"> Michel Tourn </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-41">HADOOP-41</a> </td> |
| <td align="left"> JAVA_OPTS for the TaskRunner Child </td> |
| <td align="left"> Minor </td> |
| <td align="left"> conf </td> |
| <td align="left"> stack </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-60">HADOOP-60</a> </td> |
| <td align="left"> Specification of alternate conf. directory </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> stack </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-79">HADOOP-79</a> </td> |
| <td align="left"> listFiles optimization </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Konstantin Shvachko </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-87">HADOOP-87</a> </td> |
| <td align="left"> SequenceFile performance degrades substantially compression is on and large values are encountered </td> |
| <td align="left"> Major </td> |
| <td align="left"> io </td> |
| <td align="left"> Sameer Paranjpye </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-45">HADOOP-45</a> </td> |
| <td align="left"> JobTracker should log task errors </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Doug Cutting </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-67">HADOOP-67</a> </td> |
| <td align="left"> Added statistic/reporting info to DFS </td> |
| <td align="left"> Trivial </td> |
| <td align="left"> . </td> |
| <td align="left"> Barry Kaplan </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-33">HADOOP-33</a> </td> |
| <td align="left"> DF enhancement: performance and win XP support </td> |
| <td align="left"> Minor </td> |
| <td align="left"> fs </td> |
| <td align="left"> Konstantin Shvachko </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-103">HADOOP-103</a> </td> |
| <td align="left"> introduce a common parent class for Mapper and Reducer </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </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-6">HADOOP-6</a> </td> |
| <td align="left"> missing build directory in classpath </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-7">HADOOP-7</a> </td> |
| <td align="left"> MapReduce has a series of problems concerning task-allocation to worker nodes </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Mike Cafarella </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-10">HADOOP-10</a> </td> |
| <td align="left"> ndfs.replication is not documented within the nutch-default.xml configuration file. </td> |
| <td align="left"> Trivial </td> |
| <td align="left"> . </td> |
| <td align="left"> Rod Taylor </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-5">HADOOP-5</a> </td> |
| <td align="left"> need commons-logging-api jar file </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-21">HADOOP-21</a> </td> |
| <td align="left"> the webapps need to be updated for the move from nutch </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-22">HADOOP-22</a> </td> |
| <td align="left"> remove unused imports </td> |
| <td align="left"> Trivial </td> |
| <td align="left"> . </td> |
| <td align="left"> Sami Siren </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-28">HADOOP-28</a> </td> |
| <td align="left"> webapps broken </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12">HADOOP-12</a> </td> |
| <td align="left"> InputFormat used in job must be in JobTracker classpath (not loaded from job JAR) </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Bryan Pendleton </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-34">HADOOP-34</a> </td> |
| <td align="left"> Build Paths Relative to PWD in build.xml </td> |
| <td align="left"> Trivial </td> |
| <td align="left"> . </td> |
| <td align="left"> Jeremy Bensley </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-42">HADOOP-42</a> </td> |
| <td align="left"> PositionCache decrements its position for reads at the end of file </td> |
| <td align="left"> Major </td> |
| <td align="left"> fs </td> |
| <td align="left"> Konstantin Shvachko </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-40">HADOOP-40</a> </td> |
| <td align="left"> bufferSize argument is ignored in FileSystem.create(File, boolean, int) </td> |
| <td align="left"> Minor </td> |
| <td align="left"> fs </td> |
| <td align="left"> Konstantin Shvachko </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-16">HADOOP-16</a> </td> |
| <td align="left"> RPC call times out while indexing map task is computing splits </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Chris Schneider </td> |
| <td align="left"> Mike Cafarella </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-57">HADOOP-57</a> </td> |
| <td align="left"> hadoop dfs -ls / does not show root of file system </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Yoram Arnon </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-66">HADOOP-66</a> </td> |
| <td align="left"> dfs client writes all data for a chunk to /tmp </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Sameer Paranjpye </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-70">HADOOP-70</a> </td> |
| <td align="left"> the two file system tests TestDFS and TestFileSystem take too long </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-77">HADOOP-77</a> </td> |
| <td align="left"> hang / crash when input folder does not exists. </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Stefan Groschupf </td> |
| <td align="left"> </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-78">HADOOP-78</a> </td> |
| <td align="left"> rpc commands not buffered </td> |
| <td align="left"> Major </td> |
| <td align="left"> ipc </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-81">HADOOP-81</a> </td> |
| <td align="left"> speculative execution is only controllable from the default config </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-82">HADOOP-82</a> </td> |
| <td align="left"> JobTracker loses it: NoSuchElementException </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> stack </td> |
| <td align="left"> </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-86">HADOOP-86</a> </td> |
| <td align="left"> If corrupted map outputs, reducers get stuck fetching forever </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> stack </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-93">HADOOP-93</a> </td> |
| <td align="left"> allow minimum split size configurable </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Hairong Kuang </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-97">HADOOP-97</a> </td> |
| <td align="left"> DFSShell.cat returns NullPointerException if file does not exist </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Konstantin Shvachko </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-3">HADOOP-3</a> </td> |
| <td align="left"> Output directories are not cleaned up before the reduces run </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-83">HADOOP-83</a> </td> |
| <td align="left"> infinite retries accessing a missing block </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Yoram Arnon </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-52">HADOOP-52</a> </td> |
| <td align="left"> mapred input and output dirs must be absolute </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Doug Cutting </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-98">HADOOP-98</a> </td> |
| <td align="left"> The JobTracker’s count of the number of running maps and reduces is wrong </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-19">HADOOP-19</a> </td> |
| <td align="left"> Datanode corruption </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Rod Taylor </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-84">HADOOP-84</a> </td> |
| <td align="left"> client should report file name in which IO exception occurs </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Yoram Arnon </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-2">HADOOP-2</a> </td> |
| <td align="left"> Reused Keys and Values fail with a Combiner </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-110">HADOOP-110</a> </td> |
| <td align="left"> new key and value instances are allocated before each map </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-107">HADOOP-107</a> </td> |
| <td align="left"> Namenode errors “Failed to complete filename.crc because dir.getFile()==null and null” </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Igor Bolotin </td> |
| <td align="left"> Doug Cutting </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-100">HADOOP-100</a> </td> |
| <td align="left"> Inconsistent locking of the JobTracker.taskTrackers field </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Owen O’Malley </td> |
| <td align="left"> Owen O’Malley </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-102">HADOOP-102</a> </td> |
| <td align="left"> Two identical consecutive loops in FSNamesystem.chooseTarget() </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Konstantin Shvachko </td> |
| <td align="left"> Konstantin Shvachko </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-112">HADOOP-112</a> </td> |
| <td align="left"> copyFromLocal should exclude .crc files </td> |
| <td align="left"> Minor </td> |
| <td align="left"> . </td> |
| <td align="left"> Monu Ogbe </td> |
| <td align="left"> Doug Cutting </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/HADOOP-1">HADOOP-1</a> </td> |
| <td align="left"> initial import of code from Nutch </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Doug Cutting </td> |
| <td align="left"> Doug Cutting </td></tr> |
| </tbody> |
| </table></div></div> |
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