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Arun Suresh c53d45a687 YARN-3535. Scheduler must re-request container resources when RMContainer transitions from ALLOCATED to KILLED (rohithsharma and peng.zhang via asuresh) 
(cherry picked from commit 9b272ccae7)

Conflicts:
	hadoop-yarn-project/CHANGES.txt
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/rmcontainer/RMContainerImpl.java
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/event/SchedulerEventType.java
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/TestAbstractYarnScheduler.java
	hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestFairScheduler.java
 		2015-12-14 23:50:55 -08:00
..
bin YARN-2827. Fixed bugs in "yarn queue" CLI. Contributed by Wangda Tan. 2014-11-07 12:01:33 -08:00
conf YARN-1982. Renamed the daemon name to be TimelineServer instead of History Server and deprecated the old usage. Contributed by Zhijie Shen. 2014-05-11 00:05:31 +00:00
dev-support YARN-3124. Fixed CS LeafQueue/ParentQueue to use QueueCapacities to track capacities-by-label. Contributed by Wangda Tan 2015-09-06 11:54:40 -07:00
hadoop-yarn-api Preparing for 2.6.3 development 2015-10-21 10:58:06 -07:00
hadoop-yarn-applications YARN-4326. Fix TestDistributedShell timeout as AHS in MiniYarnCluster no longer binds to default port 8188. (Meng Ding via wangda) 2015-11-06 09:10:12 -08:00
hadoop-yarn-client Preparing for 2.6.3 development 2015-10-21 10:58:06 -07:00
hadoop-yarn-common YARN-4365. FileSystemNodeLabelStore should check for root dir existence on startup. Contributed by Kuhu Shukla 2015-11-24 23:59:40 +00:00
hadoop-yarn-registry Preparing for 2.6.3 development 2015-10-21 10:58:06 -07:00
hadoop-yarn-server YARN-3535. Scheduler must re-request container resources when RMContainer transitions from ALLOCATED to KILLED (rohithsharma and peng.zhang via asuresh) 2015-12-14 23:50:55 -08:00
hadoop-yarn-site YARN-4434. NodeManager Disk Checker parameter documentation is not correct. Contributed by Weiwei Yang. 2015-12-09 16:30:39 +09:00
README
…
pom.xml Preparing for 2.6.3 development 2015-10-21 10:58:06 -07:00

README 

YARN (YET ANOTHER RESOURCE NEGOTIATOR or YARN Application Resource Negotiator)
------------------------------------------------------------------------------

Requirements
-------------
Java: JDK 1.6
Maven: Maven 3

Setup
-----
Install protobuf 2.5.0 (Download from http://code.google.com/p/protobuf/downloads/list)
 - install the protoc executable (configure, make, make install)
 - install the maven artifact (cd java; mvn install)


Quick Maven Tips
----------------
clean workspace: mvn clean
compile and test: mvn install
skip tests: mvn install -DskipTests
skip test execution but compile: mvn install -Dmaven.test.skip.exec=true
clean and test: mvn clean install
run selected test after compile: mvn test -Dtest=TestClassName (combined: mvn clean install -Dtest=TestClassName)
create runnable binaries after install: mvn assembly:assembly -Pnative (combined: mvn clean install assembly:assembly -Pnative)

Eclipse Projects
----------------
http://maven.apache.org/guides/mini/guide-ide-eclipse.html

1. Generate .project and .classpath files in all maven modules
mvn eclipse:eclipse
CAUTION: If the project structure has changed from your previous workspace, clean up all .project and .classpath files recursively. Then run:
mvn eclipse:eclipse

2. Import the projects in eclipse.

3. Set the environment variable M2_REPO to point to your .m2/repository location.

NetBeans Projects
-----------------

NetBeans has builtin support of maven projects. Just "Open Project..."
and everything is setup automatically. Verified with NetBeans 6.9.1.


Custom Hadoop Dependencies
--------------------------

By default Hadoop dependencies are specified in the top-level pom.xml
properties section. One can override them via -Dhadoop-common.version=...
on the command line. ~/.m2/settings.xml can also be used to specify
these properties in different profiles, which is useful for IDEs.

Modules
-------
YARN consists of multiple modules. The modules are listed below as per the directory structure:

hadoop-yarn-api - Yarn's cross platform external interface

hadoop-yarn-common - Utilities which can be used by yarn clients and server

hadoop-yarn-server - Implementation of the hadoop-yarn-api
	hadoop-yarn-server-common - APIs shared between resourcemanager and nodemanager
	hadoop-yarn-server-nodemanager (TaskTracker replacement)
	hadoop-yarn-server-resourcemanager (JobTracker replacement)

Utilities for understanding the code
------------------------------------
Almost all of the yarn components as well as the mapreduce framework use
state-machines for all the data objects. To understand those central pieces of
the code, a visual representation of the state-machines helps much. You can first
convert the state-machines into graphviz(.gv) format by
running:
   mvn compile -Pvisualize
Then you can use the dot program for generating directed graphs and convert the above
.gv files to images. The graphviz package has the needed dot program and related
utilites.For e.g., to generate png files you can run:
   dot -Tpng NodeManager.gv > NodeManager.png