Ashutosh Gupta 00e2405fbd YARN-8234. Improve RM system metrics publisher's performance by pushing events to timeline server in batch (#3793) 3 years ago
..
bin 6185056f4d YARN-11047. ResourceManager and NodeManager unable to connect to Hbase when ATSv2 is enabled (#3802) 3 years ago
conf 8b159d296d [YARN-10998] Add YARN_ROUTER_HEAPSIZE to yarn-env for routers (#3603) 3 years ago
dev-support ec22850dbe Make upstream aware of 3.2.2 release. 4 years ago
hadoop-yarn-api 00e2405fbd YARN-8234. Improve RM system metrics publisher's performance by pushing events to timeline server in batch (#3793) 3 years ago
hadoop-yarn-applications 04b6b9a87b HADOOP-16908. Prune Jackson 1 from the codebase and restrict it's usage for future (#3789) 3 years ago
hadoop-yarn-client c0bdba8fac HADOOP-18017. unguava: remove Preconditions from hadoop-yarn-project modules (#3687) 3 years ago
hadoop-yarn-common 00e2405fbd YARN-8234. Improve RM system metrics publisher's performance by pushing events to timeline server in batch (#3793) 3 years ago
hadoop-yarn-csi f1e1809029 HADOOP-17653. Do not use guava's Files.createTempDir(). (#2945) 4 years ago
hadoop-yarn-registry 8914cf9167 Preparing for 3.4.0 development 5 years ago
hadoop-yarn-server 00e2405fbd YARN-8234. Improve RM system metrics publisher's performance by pushing events to timeline server in batch (#3793) 3 years ago
hadoop-yarn-site c9d64bad37 YARN-11007. Correct words in YARN documents (#3680) 3 years ago
hadoop-yarn-ui 7a8c2e0097 YARN-11020. [UI2] No container is found for an application attempt with a single AM container. Contributed by Andras Gyori 3 years ago
shellprofile.d 730bc746f9 HADOOP-12930. Dynamic subcommands for hadoop shell scripts (aw) 9 years ago
README c9b525bd94 YARN-6943. Update Yarn to YARN in documentation. Contributed by Chetna Chaudhari. 7 years ago
pom.xml 516f36c6f1 HADOOP-17967. Keep restrict-imports-enforcer-rule for Guava VisibleForTesting in hadoop-main pom (#3555) 3 years ago

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