http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/CHANGES.0.19.1.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/CHANGES.0.19.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/CHANGES.0.19.1.md new file mode 100644 index 0000000..275ea5b --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/CHANGES.0.19.1.md @@ -0,0 +1,112 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop Changelog + +## Release 0.19.1 - 2009-02-24 + +### INCOMPATIBLE CHANGES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-5225](https://issues.apache.org/jira/browse/HADOOP-5225) | workaround for tmp file handling on DataNodes in 0.19.1 (HADOOP-4663) | Blocker | . | Nigel Daley | Raghu Angadi | +| [HADOOP-5224](https://issues.apache.org/jira/browse/HADOOP-5224) | Disable append | Blocker | . | Nigel Daley | | +| [HADOOP-4061](https://issues.apache.org/jira/browse/HADOOP-4061) | Large number of decommission freezes the Namenode | Major | . | Koji Noguchi | Tsz Wo Nicholas Sze | + + +### NEW FEATURES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-5034](https://issues.apache.org/jira/browse/HADOOP-5034) | NameNode should send both replication and deletion requests to DataNode in one reply to a heartbeat | Major | . | Hairong Kuang | Hairong Kuang | + + +### IMPROVEMENTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-5127](https://issues.apache.org/jira/browse/HADOOP-5127) | FSDirectory should not have public methods. | Major | . | Konstantin Shvachko | Jakob Homan | +| [HADOOP-5086](https://issues.apache.org/jira/browse/HADOOP-5086) | Trash URI semantics can be relaxed | Minor | fs | Chris Douglas | Chris Douglas | +| [HADOOP-4739](https://issues.apache.org/jira/browse/HADOOP-4739) | Minor enhancements to some sections of the Map/Reduce tutorial | Trivial | . | Vivek Ratan | Vivek Ratan | +| [HADOOP-3894](https://issues.apache.org/jira/browse/HADOOP-3894) | DFSClient chould log errors better, and provide better diagnostics | Trivial | . | Steve Loughran | Steve Loughran | + + +### BUG FIXES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-5665](https://issues.apache.org/jira/browse/HADOOP-5665) | Namenode could not be formatted because the "whoami" program could not be run. | Major | . | Evelyn Sylvia | | +| [HADOOP-5268](https://issues.apache.org/jira/browse/HADOOP-5268) | Using MultipleOutputFormat and setting reducers to 0 causes org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException and job to fail | Major | . | Thibaut | | +| [HADOOP-5193](https://issues.apache.org/jira/browse/HADOOP-5193) | SecondaryNameNode does not rollImage because of incorrect calculation of edits modification time. | Major | . | Konstantin Shvachko | Konstantin Shvachko | +| [HADOOP-5192](https://issues.apache.org/jira/browse/HADOOP-5192) | Block reciever should not remove a finalized block when block replication fails | Blocker | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-5166](https://issues.apache.org/jira/browse/HADOOP-5166) | JobTracker fails to restart if recovery and ACLs are enabled | Blocker | . | Karam Singh | Amar Kamat | +| [HADOOP-5161](https://issues.apache.org/jira/browse/HADOOP-5161) | Accepted sockets do not get placed in DataXceiverServer#childSockets | Major | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-5156](https://issues.apache.org/jira/browse/HADOOP-5156) | TestHeartbeatHandling uses MiniDFSCluster.getNamesystem() which does not exist in branch 0.20 | Major | test | Konstantin Shvachko | Hairong Kuang | +| [HADOOP-5134](https://issues.apache.org/jira/browse/HADOOP-5134) | FSNamesystem#commitBlockSynchronization adds under-construction block locations to blocksMap | Blocker | . | Hairong Kuang | dhruba borthakur | +| [HADOOP-5067](https://issues.apache.org/jira/browse/HADOOP-5067) | Failed/Killed attempts column in jobdetails.jsp does not show the number of failed/killed attempts correctly | Major | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-5009](https://issues.apache.org/jira/browse/HADOOP-5009) | DataNode#shutdown sometimes leaves data block scanner verification log unclosed | Major | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-5008](https://issues.apache.org/jira/browse/HADOOP-5008) | TestReplication#testPendingReplicationRetry leaves an opened fd unclosed | Major | test | Hairong Kuang | Hairong Kuang | +| [HADOOP-5002](https://issues.apache.org/jira/browse/HADOOP-5002) | 2 core tests TestFileOutputFormat and TestHarFileSystem are failing in branch 19 | Blocker | . | Ravi Gummadi | Amareshwari Sriramadasu | +| [HADOOP-4992](https://issues.apache.org/jira/browse/HADOOP-4992) | TestCustomOutputCommitter fails on hadoop-0.19 | Blocker | . | Amar Kamat | Amareshwari Sriramadasu | +| [HADOOP-4983](https://issues.apache.org/jira/browse/HADOOP-4983) | Job counters sometimes go down as tasks run without task failures | Critical | . | Owen O'Malley | Amareshwari Sriramadasu | +| [HADOOP-4982](https://issues.apache.org/jira/browse/HADOOP-4982) | TestFsck does not run in Eclipse. | Major | test | Konstantin Shvachko | Konstantin Shvachko | +| [HADOOP-4967](https://issues.apache.org/jira/browse/HADOOP-4967) | Inconsistent state in JVM manager | Major | . | Amareshwari Sriramadasu | Devaraj Das | +| [HADOOP-4966](https://issues.apache.org/jira/browse/HADOOP-4966) | Setup tasks are not removed from JobTracker's taskIdToTIPMap even after the job completes | Major | . | Amar Kamat | Amareshwari Sriramadasu | +| [HADOOP-4965](https://issues.apache.org/jira/browse/HADOOP-4965) | DFSClient should log instead of printing into std err. | Major | test | Konstantin Shvachko | Konstantin Shvachko | +| [HADOOP-4955](https://issues.apache.org/jira/browse/HADOOP-4955) | Make DBOutputFormat us column names from setOutput(...) | Major | . | Kevin Peterson | Kevin Peterson | +| [HADOOP-4943](https://issues.apache.org/jira/browse/HADOOP-4943) | fair share scheduler does not utilize all slots if the task trackers are configured heterogeneously | Major | . | Zheng Shao | Zheng Shao | +| [HADOOP-4924](https://issues.apache.org/jira/browse/HADOOP-4924) | Race condition in re-init of TaskTracker | Blocker | . | Devaraj Das | Devaraj Das | +| [HADOOP-4918](https://issues.apache.org/jira/browse/HADOOP-4918) | Fix bzip2 work with SequenceFile | Major | io | Zheng Shao | Zheng Shao | +| [HADOOP-4906](https://issues.apache.org/jira/browse/HADOOP-4906) | TaskTracker running out of memory after running several tasks | Blocker | . | Arun C Murthy | Sharad Agarwal | +| [HADOOP-4862](https://issues.apache.org/jira/browse/HADOOP-4862) | A spurious IOException log on DataNode is not completely removed | Blocker | . | Raghu Angadi | Raghu Angadi | +| [HADOOP-4847](https://issues.apache.org/jira/browse/HADOOP-4847) | OutputCommitter is loaded in the TaskTracker in localizeConfiguration | Blocker | . | Owen O'Malley | Amareshwari Sriramadasu | +| [HADOOP-4836](https://issues.apache.org/jira/browse/HADOOP-4836) | Minor typos in documentation and comments | Trivial | documentation | Jordà Polo | Jordà Polo | +| [HADOOP-4821](https://issues.apache.org/jira/browse/HADOOP-4821) | Usage description in the Quotas guide documentations are incorrect | Minor | documentation | Boris Shkolnik | Boris Shkolnik | +| [HADOOP-4797](https://issues.apache.org/jira/browse/HADOOP-4797) | RPC Server can leave a lot of direct buffers | Blocker | ipc | Raghu Angadi | Raghu Angadi | +| [HADOOP-4760](https://issues.apache.org/jira/browse/HADOOP-4760) | HDFS streams should not throw exceptions when closed twice | Major | fs, fs/s3 | Alejandro Abdelnur | Enis Soztutar | +| [HADOOP-4759](https://issues.apache.org/jira/browse/HADOOP-4759) | HADOOP-4654 to be fixed for branches \>= 0.19 | Major | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-4731](https://issues.apache.org/jira/browse/HADOOP-4731) | Job is not removed from the waiting jobs queue upon completion. | Major | . | Hemanth Yamijala | Amar Kamat | +| [HADOOP-4727](https://issues.apache.org/jira/browse/HADOOP-4727) | Groups do not work for fuse-dfs out of the box on 0.19.0 | Blocker | . | Brian Bockelman | Brian Bockelman | +| [HADOOP-4720](https://issues.apache.org/jira/browse/HADOOP-4720) | docs/api does not contain the hdfs directory after building | Major | build | Ramya Sunil | | +| [HADOOP-4697](https://issues.apache.org/jira/browse/HADOOP-4697) | KFS::getBlockLocations() fails with files having multiple blocks | Major | fs | Lohit Vijayarenu | Sriram Rao | +| [HADOOP-4635](https://issues.apache.org/jira/browse/HADOOP-4635) | Memory leak ? | Blocker | . | Marc-Olivier Fleury | Pete Wyckoff | +| [HADOOP-4632](https://issues.apache.org/jira/browse/HADOOP-4632) | TestJobHistoryVersion should not create directory in current dir. | Major | . | Amareshwari Sriramadasu | Amar Kamat | +| [HADOOP-4616](https://issues.apache.org/jira/browse/HADOOP-4616) | assertion makes fuse-dfs exit when reading incomplete data | Blocker | . | Marc-Olivier Fleury | Pete Wyckoff | +| [HADOOP-4508](https://issues.apache.org/jira/browse/HADOOP-4508) | FSDataOutputStream.getPos() == 0when appending to existing file and should be file length | Major | fs | Pete Wyckoff | dhruba borthakur | +| [HADOOP-4494](https://issues.apache.org/jira/browse/HADOOP-4494) | libhdfs does not call FileSystem.append when O\_APPEND passed to hdfsOpenFile | Major | . | Pete Wyckoff | Pete Wyckoff | +| [HADOOP-4420](https://issues.apache.org/jira/browse/HADOOP-4420) | JobTracker.killJob() doesn't check for the JobID being valid | Minor | . | Steve Loughran | Aaron Kimball | + + +### TESTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### OTHER: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + +
http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/RELEASENOTES.0.19.1.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/RELEASENOTES.0.19.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/RELEASENOTES.0.19.1.md new file mode 100644 index 0000000..25984a4 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.1/RELEASENOTES.0.19.1.md @@ -0,0 +1,101 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop 0.19.1 Release Notes + +These release notes cover new developer and user-facing incompatibilities, features, and major improvements. + + +--- + +* [HADOOP-5225](https://issues.apache.org/jira/browse/HADOOP-5225) | *Blocker* | **workaround for tmp file handling on DataNodes in 0.19.1 (HADOOP-4663)** + +Work around for tmp file handling. sync() does not work as a result. + + +--- + +* [HADOOP-5224](https://issues.apache.org/jira/browse/HADOOP-5224) | *Blocker* | **Disable append** + +HDFS append() is disabled. It throws UnsupportedOperationException. + + +--- + +* [HADOOP-5034](https://issues.apache.org/jira/browse/HADOOP-5034) | *Major* | **NameNode should send both replication and deletion requests to DataNode in one reply to a heartbeat** + +This patch changes the DatanodeProtocoal version number from 18 to 19. The patch allows NameNode to send both block replication and deletion request to a DataNode in response to a heartbeat. + + +--- + +* [HADOOP-5002](https://issues.apache.org/jira/browse/HADOOP-5002) | *Blocker* | **2 core tests TestFileOutputFormat and TestHarFileSystem are failing in branch 19** + +This patch solves the null pointer exception issue in the 2 core tests TestFileOutputFormat and TestHarFileSystem in branch 19. + + +--- + +* [HADOOP-4943](https://issues.apache.org/jira/browse/HADOOP-4943) | *Major* | **fair share scheduler does not utilize all slots if the task trackers are configured heterogeneously** + +HADOOP-4943: Fixed fair share scheduler to utilize all slots when the task trackers are configured heterogeneously. + + +--- + +* [HADOOP-4906](https://issues.apache.org/jira/browse/HADOOP-4906) | *Blocker* | **TaskTracker running out of memory after running several tasks** + +Fix the tasktracker for OOM exception by sharing the jobconf properties across tasks of the same job. Earlier a new instance was held for each task. With this fix, the job level configuration properties are shared across tasks of the same job. + + +--- + +* [HADOOP-4862](https://issues.apache.org/jira/browse/HADOOP-4862) | *Blocker* | **A spurious IOException log on DataNode is not completely removed** + +Minor : HADOOP-3678 did not remove all the cases of spurious IOExceptions logged by DataNode. + + +--- + +* [HADOOP-4797](https://issues.apache.org/jira/browse/HADOOP-4797) | *Blocker* | **RPC Server can leave a lot of direct buffers** + +Improve how RPC server reads and writes large buffers. Avoids soft-leak of direct buffers and excess copies in NIO layer. + + +--- + +* [HADOOP-4635](https://issues.apache.org/jira/browse/HADOOP-4635) | *Blocker* | **Memory leak ?** + +fix memory leak of user/group information in fuse-dfs + + +--- + +* [HADOOP-4494](https://issues.apache.org/jira/browse/HADOOP-4494) | *Major* | **libhdfs does not call FileSystem.append when O\_APPEND passed to hdfsOpenFile** + +libhdfs supports O\_APPEND flag + + +--- + +* [HADOOP-4061](https://issues.apache.org/jira/browse/HADOOP-4061) | *Major* | **Large number of decommission freezes the Namenode** + +Added a new conf property dfs.namenode.decommission.nodes.per.interval so that NameNode checks decommission status of x nodes for every y seconds, where x is the value of dfs.namenode.decommission.nodes.per.interval and y is the value of dfs.namenode.decommission.interval. + + + http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/CHANGES.0.19.2.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/CHANGES.0.19.2.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/CHANGES.0.19.2.md new file mode 100644 index 0000000..0a823a2 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/CHANGES.0.19.2.md @@ -0,0 +1,104 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop Changelog + +## Release 0.19.2 - 2009-07-23 + +### INCOMPATIBLE CHANGES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-5332](https://issues.apache.org/jira/browse/HADOOP-5332) | Make support for file append API configurable | Blocker | . | Nigel Daley | dhruba borthakur | + + +### NEW FEATURES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### IMPROVEMENTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-5379](https://issues.apache.org/jira/browse/HADOOP-5379) | Throw exception instead of writing to System.err when there is a CRC error on CBZip2InputStream | Minor | io | Rodrigo Schmidt | Rodrigo Schmidt | + + +### BUG FIXES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-6017](https://issues.apache.org/jira/browse/HADOOP-6017) | NameNode and SecondaryNameNode fail to restart because of abnormal filenames. | Blocker | . | Raghu Angadi | Tsz Wo Nicholas Sze | +| [HADOOP-5951](https://issues.apache.org/jira/browse/HADOOP-5951) | StorageInfo needs Apache license header. | Major | . | Suresh Srinivas | Suresh Srinivas | +| [HADOOP-5816](https://issues.apache.org/jira/browse/HADOOP-5816) | ArrayIndexOutOfBoundsException when using KeyFieldBasedComparator | Minor | . | Min Zhou | He Yongqiang | +| [HADOOP-5728](https://issues.apache.org/jira/browse/HADOOP-5728) | FSEditLog.printStatistics may cause IndexOutOfBoundsException | Major | . | Wang Xu | Wang Xu | +| [HADOOP-5671](https://issues.apache.org/jira/browse/HADOOP-5671) | DistCp.sameFile(..) should return true if src fs does not support checksum | Major | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze | +| [HADOOP-5644](https://issues.apache.org/jira/browse/HADOOP-5644) | Namnode is stuck in safe mode | Major | . | Suresh Srinivas | Suresh Srinivas | +| [HADOOP-5579](https://issues.apache.org/jira/browse/HADOOP-5579) | libhdfs does not set errno correctly | Major | . | Brian Bockelman | Brian Bockelman | +| [HADOOP-5557](https://issues.apache.org/jira/browse/HADOOP-5557) | Two minor problems in TestOverReplicatedBlocks | Minor | test | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze | +| [HADOOP-5554](https://issues.apache.org/jira/browse/HADOOP-5554) | DataNodeCluster should create blocks with the same generation stamp as the blocks created in CreateEditsLog | Major | test | Hairong Kuang | Hairong Kuang | +| [HADOOP-5551](https://issues.apache.org/jira/browse/HADOOP-5551) | Namenode permits directory destruction on overwrite | Critical | . | Brian Bockelman | Brian Bockelman | +| [HADOOP-5549](https://issues.apache.org/jira/browse/HADOOP-5549) | ReplicationMonitor should schedule both replication and deletion work in one iteration | Major | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-5522](https://issues.apache.org/jira/browse/HADOOP-5522) | Document job setup/cleaup tasks and task cleanup tasks in mapred tutorial | Blocker | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-5479](https://issues.apache.org/jira/browse/HADOOP-5479) | NameNode should not send empty block replication request to DataNode | Critical | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-5465](https://issues.apache.org/jira/browse/HADOOP-5465) | Blocks remain under-replicated | Blocker | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-5449](https://issues.apache.org/jira/browse/HADOOP-5449) | Verify if JobHistory.HistoryCleaner works as expected | Blocker | . | Amar Kamat | Amareshwari Sriramadasu | +| [HADOOP-5446](https://issues.apache.org/jira/browse/HADOOP-5446) | TaskTracker metrics are disabled | Major | metrics | Chris Douglas | Chris Douglas | +| [HADOOP-5440](https://issues.apache.org/jira/browse/HADOOP-5440) | Successful taskid are not removed from TaskMemoryManager | Blocker | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-5421](https://issues.apache.org/jira/browse/HADOOP-5421) | HADOOP-4638 has broken 0.19 compilation | Blocker | . | Amar Kamat | Devaraj Das | +| [HADOOP-5392](https://issues.apache.org/jira/browse/HADOOP-5392) | JobTracker crashes during recovery if job files are garbled | Blocker | . | Amar Kamat | Amar Kamat | +| [HADOOP-5384](https://issues.apache.org/jira/browse/HADOOP-5384) | DataNodeCluster should not create blocks with generationStamp == 1 | Blocker | test | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze | +| [HADOOP-5376](https://issues.apache.org/jira/browse/HADOOP-5376) | JobInProgress.obtainTaskCleanupTask() throws an ArrayIndexOutOfBoundsException | Blocker | . | Vinod Kumar Vavilapalli | Amareshwari Sriramadasu | +| [HADOOP-5374](https://issues.apache.org/jira/browse/HADOOP-5374) | NPE in JobTracker.getTasksToSave() method | Major | . | Vinod Kumar Vavilapalli | Amareshwari Sriramadasu | +| [HADOOP-5333](https://issues.apache.org/jira/browse/HADOOP-5333) | The libhdfs append API is not coded correctly | Major | . | dhruba borthakur | dhruba borthakur | +| [HADOOP-5326](https://issues.apache.org/jira/browse/HADOOP-5326) | bzip2 codec (CBZip2OutputStream) creates corrupted output file for some inputs | Major | io | Rodrigo Schmidt | Rodrigo Schmidt | +| [HADOOP-5285](https://issues.apache.org/jira/browse/HADOOP-5285) | JobTracker hangs for long periods of time | Blocker | . | Vinod Kumar Vavilapalli | Devaraj Das | +| [HADOOP-5280](https://issues.apache.org/jira/browse/HADOOP-5280) | When expiring a lost launched task, JT doesn't remove the attempt from the taskidToTIPMap. | Blocker | . | Vinod Kumar Vavilapalli | Devaraj Das | +| [HADOOP-5269](https://issues.apache.org/jira/browse/HADOOP-5269) | TaskTracker.runningTasks holding FAILED\_UNCLEAN and KILLED\_UNCLEAN taskStatuses forever in some cases. | Blocker | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-5247](https://issues.apache.org/jira/browse/HADOOP-5247) | NPEs in JobTracker and JobClient when mapred.jobtracker.completeuserjobs.maximum is set to zero. | Blocker | . | Vinod Kumar Vavilapalli | Amar Kamat | +| [HADOOP-5241](https://issues.apache.org/jira/browse/HADOOP-5241) | Reduce tasks get stuck because of over-estimated task size (regression from 0.18) | Blocker | . | Andy Pavlo | Sharad Agarwal | +| [HADOOP-5233](https://issues.apache.org/jira/browse/HADOOP-5233) | Reducer not Succeded after 100% | Blocker | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-5231](https://issues.apache.org/jira/browse/HADOOP-5231) | Negative number of maps in cluster summary | Major | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu | +| [HADOOP-5213](https://issues.apache.org/jira/browse/HADOOP-5213) | BZip2CompressionOutputStream NullPointerException | Blocker | io | Zheng Shao | Zheng Shao | +| [HADOOP-5154](https://issues.apache.org/jira/browse/HADOOP-5154) | 4-way deadlock in FairShare scheduler | Blocker | . | Vinod Kumar Vavilapalli | Matei Zaharia | +| [HADOOP-5146](https://issues.apache.org/jira/browse/HADOOP-5146) | LocalDirAllocator misses files on the local filesystem | Blocker | . | Arun C Murthy | Devaraj Das | +| [HADOOP-4780](https://issues.apache.org/jira/browse/HADOOP-4780) | Task Tracker burns a lot of cpu in calling getLocalCache | Major | . | Runping Qi | He Yongqiang | +| [HADOOP-4719](https://issues.apache.org/jira/browse/HADOOP-4719) | The ls shell command documentation is out-dated | Major | documentation | Tsz Wo Nicholas Sze | Ravi Phulari | +| [HADOOP-4638](https://issues.apache.org/jira/browse/HADOOP-4638) | Exception thrown in/from RecoveryManager.recover() should be caught and handled | Blocker | . | Amar Kamat | Amar Kamat | +| [HADOOP-3998](https://issues.apache.org/jira/browse/HADOOP-3998) | Got an exception from ClientFinalizer when the JT is terminated | Blocker | . | Amar Kamat | dhruba borthakur | + + +### TESTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### OTHER: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/RELEASENOTES.0.19.2.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/RELEASENOTES.0.19.2.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/RELEASENOTES.0.19.2.md new file mode 100644 index 0000000..5cf2ebf --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.19.2/RELEASENOTES.0.19.2.md @@ -0,0 +1,38 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop 0.19.2 Release Notes + +These release notes cover new developer and user-facing incompatibilities, features, and major improvements. + + +--- + +* [HADOOP-5332](https://issues.apache.org/jira/browse/HADOOP-5332) | *Blocker* | **Make support for file append API configurable** + +Appending to HDFS files is supported only if dfs.support.append is set to true. + + +--- + +* [HADOOP-4780](https://issues.apache.org/jira/browse/HADOOP-4780) | *Major* | **Task Tracker burns a lot of cpu in calling getLocalCache** + +make DistributedCache remember the size of each cache directory + + + http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/CHANGES.0.2.0.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/CHANGES.0.2.0.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/CHANGES.0.2.0.md new file mode 100644 index 0000000..9769965 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/CHANGES.0.2.0.md @@ -0,0 +1,119 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop Changelog + +## Release 0.2.0 - 2006-05-05 + +### INCOMPATIBLE CHANGES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### NEW FEATURES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-191](https://issues.apache.org/jira/browse/HADOOP-191) | add hadoopStreaming to src/contrib | Major | . | Michel Tourn | Doug Cutting | +| [HADOOP-189](https://issues.apache.org/jira/browse/HADOOP-189) | Add job jar lib, classes, etc. to CLASSPATH when in standalone mode | Major | . | stack | Doug Cutting | +| [HADOOP-148](https://issues.apache.org/jira/browse/HADOOP-148) | add a failure count to task trackers | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-132](https://issues.apache.org/jira/browse/HADOOP-132) | An API for reporting performance metrics | Major | . | David Bowen | | +| [HADOOP-65](https://issues.apache.org/jira/browse/HADOOP-65) | add a record I/O framework to hadoop | Minor | io, ipc | Sameer Paranjpye | | +| [HADOOP-51](https://issues.apache.org/jira/browse/HADOOP-51) | per-file replication counts | Major | . | Doug Cutting | Konstantin Shvachko | + + +### IMPROVEMENTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-198](https://issues.apache.org/jira/browse/HADOOP-198) | adding owen's examples to exampledriver | Minor | . | Mahadev konar | Mahadev konar | +| [HADOOP-178](https://issues.apache.org/jira/browse/HADOOP-178) | piggyback block work requests to heartbeats and move block replication/deletion startup delay from datanodes to namenode | Major | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-177](https://issues.apache.org/jira/browse/HADOOP-177) | improvement to browse through the map/reduce tasks | Minor | . | Mahadev konar | Mahadev konar | +| [HADOOP-173](https://issues.apache.org/jira/browse/HADOOP-173) | optimize allocation of tasks w/ local data | Major | . | Doug Cutting | Doug Cutting | +| [HADOOP-170](https://issues.apache.org/jira/browse/HADOOP-170) | setReplication and related bug fixes | Major | fs | Konstantin Shvachko | Konstantin Shvachko | +| [HADOOP-167](https://issues.apache.org/jira/browse/HADOOP-167) | reducing the number of Configuration & JobConf objects created | Major | conf | Owen O'Malley | Owen O'Malley | +| [HADOOP-166](https://issues.apache.org/jira/browse/HADOOP-166) | IPC is unable to invoke methods that use interfaces as parameter | Minor | ipc | Stefan Groschupf | Doug Cutting | +| [HADOOP-150](https://issues.apache.org/jira/browse/HADOOP-150) | tip and task names should reflect the job name | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-144](https://issues.apache.org/jira/browse/HADOOP-144) | the dfs client id isn't relatable to the map/reduce task ids | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-142](https://issues.apache.org/jira/browse/HADOOP-142) | failed tasks should be rescheduled on different hosts after other jobs | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-138](https://issues.apache.org/jira/browse/HADOOP-138) | stop all tasks | Trivial | . | Stefan Groschupf | Doug Cutting | +| [HADOOP-131](https://issues.apache.org/jira/browse/HADOOP-131) | Separate start/stop-dfs.sh and start/stop-mapred.sh scripts | Minor | . | Chris A. Mattmann | Doug Cutting | +| [HADOOP-129](https://issues.apache.org/jira/browse/HADOOP-129) | FileSystem should not name files with java.io.File | Major | fs | Doug Cutting | Doug Cutting | +| [HADOOP-116](https://issues.apache.org/jira/browse/HADOOP-116) | cleaning up /tmp/hadoop/mapred/system | Major | . | raghavendra prabhu | Doug Cutting | +| [HADOOP-114](https://issues.apache.org/jira/browse/HADOOP-114) | Non-informative error message | Trivial | . | Rod Taylor | Doug Cutting | +| [HADOOP-96](https://issues.apache.org/jira/browse/HADOOP-96) | name server should log decisions that affect data: block creation, removal, replication | Critical | . | Yoram Arnon | Hairong Kuang | + + +### BUG FIXES: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-192](https://issues.apache.org/jira/browse/HADOOP-192) | Trivial JRE 1.5 versus 1.4 bug | Blocker | . | David Bowen | | +| [HADOOP-190](https://issues.apache.org/jira/browse/HADOOP-190) | Job fails though task succeeded if we fail to exit | Major | . | stack | | +| [HADOOP-188](https://issues.apache.org/jira/browse/HADOOP-188) | more unprotected RPC calls in JobClient.runJob allow loss of job due to timeout | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-186](https://issues.apache.org/jira/browse/HADOOP-186) | communication problems in the task tracker cause long latency | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-185](https://issues.apache.org/jira/browse/HADOOP-185) | tasks are lost during pollForNewTask | Critical | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-183](https://issues.apache.org/jira/browse/HADOOP-183) | adjust file replication factor when loading image and edits according to replication.min and replication.max | Minor | . | Hairong Kuang | Hairong Kuang | +| [HADOOP-182](https://issues.apache.org/jira/browse/HADOOP-182) | lost task trackers should not update status of completed jobs | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-174](https://issues.apache.org/jira/browse/HADOOP-174) | jobclient kills job for one timeout | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-172](https://issues.apache.org/jira/browse/HADOOP-172) | rpc doesn't handle returning null for a String[] | Blocker | ipc | Owen O'Malley | Owen O'Malley | +| [HADOOP-169](https://issues.apache.org/jira/browse/HADOOP-169) | a single failure from locateMapOutputs kills the entire job | Critical | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-168](https://issues.apache.org/jira/browse/HADOOP-168) | JobSubmissionProtocol and InterTrackerProtocol don't include "throws IOException" on all methods | Minor | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-162](https://issues.apache.org/jira/browse/HADOOP-162) | concurrent modification exception in FSNamesystem.Lease.releaseLocks | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-160](https://issues.apache.org/jira/browse/HADOOP-160) | sleeping with locks held | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-157](https://issues.apache.org/jira/browse/HADOOP-157) | job fails because pendingCreates is not cleaned up after a task fails | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-151](https://issues.apache.org/jira/browse/HADOOP-151) | RPC code has socket leak? | Major | ipc | p sutter | Doug Cutting | +| [HADOOP-143](https://issues.apache.org/jira/browse/HADOOP-143) | exception call stacks are word wrapped in webapp | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-139](https://issues.apache.org/jira/browse/HADOOP-139) | Deadlock in LocalFileSystem lock/release | Major | fs | Igor Bolotin | Doug Cutting | +| [HADOOP-137](https://issues.apache.org/jira/browse/HADOOP-137) | Different TaskTrackers may get the same task tracker id, thus cause many problems. | Critical | . | Runping Qi | Owen O'Malley | +| [HADOOP-134](https://issues.apache.org/jira/browse/HADOOP-134) | JobTracker trapped in a loop if it fails to localize a task | Major | . | Runping Qi | Owen O'Malley | +| [HADOOP-133](https://issues.apache.org/jira/browse/HADOOP-133) | the TaskTracker.Child.ping thread calls exit | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-128](https://issues.apache.org/jira/browse/HADOOP-128) | Failure to replicate dfs block kills client | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-126](https://issues.apache.org/jira/browse/HADOOP-126) | "hadoop dfs -cp" does not copy crc files | Major | . | Konstantin Shvachko | Konstantin Shvachko | +| [HADOOP-125](https://issues.apache.org/jira/browse/HADOOP-125) | LocalFileSystem.makeAbsolute bug on Windows | Minor | fs | p sutter | Doug Cutting | +| [HADOOP-118](https://issues.apache.org/jira/browse/HADOOP-118) | Namenode does not always clean up pendingCreates | Critical | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-117](https://issues.apache.org/jira/browse/HADOOP-117) | mapred temporary files not deleted | Blocker | . | raghavendra prabhu | Doug Cutting | +| [HADOOP-92](https://issues.apache.org/jira/browse/HADOOP-92) | Error Reporting/logging in MapReduce | Minor | . | Mahadev konar | Mahadev konar | +| [HADOOP-69](https://issues.apache.org/jira/browse/HADOOP-69) | Unchecked lookup value causes NPE in FSNamesystemgetDatanodeHints | Major | . | Bryan Pendleton | | +| [HADOOP-68](https://issues.apache.org/jira/browse/HADOOP-68) | "Cannot abandon block during write to \<file\>" and "Cannot obtain additional block for file \<file\>" errors during dfs write test | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-63](https://issues.apache.org/jira/browse/HADOOP-63) | problem with webapp when start a jobtracker | Minor | . | Hairong Kuang | Hairong Kuang | + + +### TESTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | +| [HADOOP-194](https://issues.apache.org/jira/browse/HADOOP-194) | Distributed checkup of the file system consistency. | Major | . | Konstantin Shvachko | Konstantin Shvachko | +| [HADOOP-193](https://issues.apache.org/jira/browse/HADOOP-193) | DFS i/o benchmark. | Major | fs | Konstantin Shvachko | | +| [HADOOP-187](https://issues.apache.org/jira/browse/HADOOP-187) | simple distributed dfs random data writer & sort example applications | Major | . | Owen O'Malley | Owen O'Malley | +| [HADOOP-184](https://issues.apache.org/jira/browse/HADOOP-184) | hadoop nightly build and regression test on a cluster | Minor | . | Mahadev konar | Mahadev konar | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### OTHER: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/RELEASENOTES.0.2.0.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/RELEASENOTES.0.2.0.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/RELEASENOTES.0.2.0.md new file mode 100644 index 0000000..75182d1 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.0/RELEASENOTES.0.2.0.md @@ -0,0 +1,24 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop 0.2.0 Release Notes + +These release notes cover new developer and user-facing incompatibilities, features, and major improvements. + + + http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/CHANGES.0.2.1.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/CHANGES.0.2.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/CHANGES.0.2.1.md new file mode 100644 index 0000000..19e53c2 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/CHANGES.0.2.1.md @@ -0,0 +1,67 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop Changelog + +## Release 0.2.1 - 2006-05-12 + +### INCOMPATIBLE CHANGES: + +| 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-207](https://issues.apache.org/jira/browse/HADOOP-207) | Patch to HADOOP-96 uses long deprecated call | Critical | . | Bryan Pendleton | Hairong Kuang | +| [HADOOP-201](https://issues.apache.org/jira/browse/HADOOP-201) | hadoop dfs -report throws exception | Minor | . | Johan Oskarsson | Doug Cutting | +| [HADOOP-199](https://issues.apache.org/jira/browse/HADOOP-199) | reduce copy progress not updating | Minor | . | Owen O'Malley | Owen O'Malley | + + +### TESTS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### SUB-TASKS: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + +### OTHER: + +| JIRA | Summary | Priority | Component | Reporter | Contributor | +|:---- |:---- | :--- |:---- |:---- |:---- | + + http://git-wip-us.apache.org/repos/asf/hadoop/blob/d759b4bd/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/RELEASENOTES.0.2.1.md ---------------------------------------------------------------------- diff --git a/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/RELEASENOTES.0.2.1.md b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/RELEASENOTES.0.2.1.md new file mode 100644 index 0000000..0e5f033 --- /dev/null +++ b/hadoop-common-project/hadoop-common/src/site/markdown/release/0.2.1/RELEASENOTES.0.2.1.md @@ -0,0 +1,24 @@ + +<!--- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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. +--> +# Apache Hadoop 0.2.1 Release Notes + +These release notes cover new developer and user-facing incompatibilities, features, and major improvements. + + +
