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This section contains the following topics:

Table of Contents

Prerequisites

  • Virtualbox
  • Vagrant


Starting the Cluster

To start the cluster, run following:

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The password for the vagrant user is vagrant.

Setting up YARN/Hadoop

To setup YARN/Hadoop inside VM, run the following yarn setup shell files:

...

Note

Process IDs are different.

 


Building the Myriad Scheduler

Building the Myriad Scheduler involves:

1. Running ` ./gradlew build`build.
2. Copying myriad-scheduler jar files to YARN home.
3. Copying myriad-executor jar files to mesos.
4. Configuring YARN to use Myriad (yarn-site.xml).
5. Configuring Myriad (myriad-config-default.yml).

Step 1: Run gradlew build

To build the Myriad Scheduler inside a VM, run the gradlew build:

Code Block
 cd /vagrant
./gradlew build

...

Note

If a build failure occurs, the issue is not with the build itself, but a failure to write to disk. This can happen when you build outside the vagrant instance first. To resolve this issue, exit the user

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hduser (type: exit) and build again as the

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vagrant user.

  {% include endnote.html %}

Step 2: Copy the Myriad Scheduler Jar Files

At this point, myriad's scheduler jar and all the runtime dependencies are available in the following location:

...

Code Block
cp /vagrant/myriad-scheduler/build/libs/* /usr/local/hadoop/share/hadoop/yarn/lib/ 

Step 3: Copy the Myriad Executor Jar File

The self-contained myriad executor jar is available at the following location:

Code Block

...

/vagrant/myriad-executor/build/libs/myriad-executor-runnable-x.y.z.jar

 jar`

Copy the myriad executor jar file to `the /usr/local/libexec/mesos/` directory.

Code Block
sudo mkdir -p /usr/local/libexec/mesos/
sudo cp /vagrant/myriad-executor/build/libs/myriad-executor-runnable-0.0.1.jar /usr/local/libexec/mesos/
sudo chown hduser:hadoop -R /usr/local/libexec/mesos/

Step 4: Configure YARN to use Myriad


To configure YARN to use Myriad, update ```$YARN$YARN_HOME/etc/hadoop/yarn-site.xml``` xml with following content:

Code Block
<property>
<name>yarn.nodemanager.resource.cpu-vcores</name>
<value>${nodemanager.resource.cpu-vcores}</value>
</property>
<property>
<name>yarn.nodemanager.resource.memory-mb</name>
<value>${nodemanager.resource.memory-mb}</value>
</property>
<!-- Configure Myriad Scheduler here -->
<property>
<name>yarn.resourcemanager.scheduler.class</name>
<value>com.ebay.myriad.scheduler.yarn.MyriadFairScheduler</value>
<description>One can configure other scehdulers as well from following list: com.ebay.myriad.scheduler.yarn.MyriadCapacityScheduler, com.ebay.myriad.scheduler.yarn.MyriadFifoScheduler</description>
</property>

Step 5: Configure Myriad Defaults

To configure Myriad itself, update $YARN_HOME/etc/hadoop/myriad-default-config.yml with the following content: 

Code Block
mesosMaster: 10.141.141.20:5050
checkpoint: false
frameworkFailoverTimeout: 43200000
frameworkName: MyriadAlpha
nativeLibrary: /usr/local/lib/libmesos.so
zkServers: localhost:2181
zkTimeout: 20000
profiles:
small:
cpu: 1
mem: 1100
medium:
cpu: 2
mem: 2048
large:
cpu: 4
mem: 4096
rebalancer: true
nodemanager:
jvmMaxMemoryMB: 1024
user: hduser
cpus: 0.2
cgroups: false
executor:
jvmMaxMemoryMB: 256
path: file://localhost/usr/local/libexec/mesos/myriad-executor-runnable-0.0.1.jar

Getting Started

To launch Myriad, run following:

Code Block
 sudo su hduser
yarn-daemon.sh start resourcemanager

Verifying Activity

To check that things are running, from a browser on the host check out the following urls:

Shutting Down

To shut down from the vagrant ssh console, do the following:

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