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# Apache Hadoop Changelog

## Release 0.15.1 - 2007-11-27



### IMPROVEMENTS:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HADOOP-1917](https://issues.apache.org/jira/browse/HADOOP-1917) | Need configuration guides for Hadoop |  Critical | documentation | Sameer Paranjpye | Arun C Murthy |
| [HADOOP-713](https://issues.apache.org/jira/browse/HADOOP-713) | dfs list operation is too expensive |  Blocker | . | Hairong Kuang | dhruba borthakur |


### BUG FIXES:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HADOOP-2174](https://issues.apache.org/jira/browse/HADOOP-2174) | distcp throws a NullPointerException in the close() method of mapper class due to the Reporter becoming invalid |  Critical | util | Riccardo Boscolo | Chris Douglas |
| [HADOOP-2169](https://issues.apache.org/jira/browse/HADOOP-2169) | libhdfs makefile wrongly sets up DT\_SONAME field of libhdfs.so |  Critical | . | Arun C Murthy | Arun C Murthy |
| [HADOOP-2172](https://issues.apache.org/jira/browse/HADOOP-2172) | PositionCache was removed from FSDataInputStream, causes extremely bad MapFile performance |  Blocker | fs | Johan Oskarsson | Doug Cutting |
| [HADOOP-2205](https://issues.apache.org/jira/browse/HADOOP-2205) | Regenerate entire hadoop website since site.xml was changed by HADOOP-1917 |  Blocker | documentation | Arun C Murthy | Arun C Murthy |


### OTHER:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HADOOP-2140](https://issues.apache.org/jira/browse/HADOOP-2140) | C and C++ files are missing Apache license header |  Blocker | . | Owen O'Malley | Owen O'Malley |


