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# Apache Hadoop Changelog

## Release 0.12.2 - 2007-03-23

### INCOMPATIBLE CHANGES:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


### IMPORTANT ISSUES:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


### NEW FEATURES:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


### IMPROVEMENTS:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


### BUG FIXES:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |
| [HADOOP-1150](https://issues.apache.org/jira/browse/HADOOP-1150) | Streaming -reducer and -mapper no longer have defaults |  Major | . | Nigel Daley | Owen O'Malley |
| [HADOOP-1145](https://issues.apache.org/jira/browse/HADOOP-1145) | XmlRecordInput class should be public |  Major | record | Runping Qi | Milind Bhandarkar |
| [HADOOP-1140](https://issues.apache.org/jira/browse/HADOOP-1140) | Deadlock bug involving the o.a.h.metrics package |  Major | metrics | David Bowen | David Bowen |
| [HADOOP-1135](https://issues.apache.org/jira/browse/HADOOP-1135) | A block report processing may incorrectly cause the namenode to delete blocks |  Major | . | dhruba borthakur | dhruba borthakur |


### TESTS:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


### SUB-TASKS:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


### OTHER:

| JIRA | Summary | Priority | Component | Reporter | Contributor |
|:---- |:---- | :--- |:---- |:---- |:---- |


