Add java yaml example (#10835)

* java example

* Update python/ray/autoscaler/aws/example-java.yaml

Co-authored-by: Eric Liang <ekhliang@gmail.com>

python/ray/autoscaler/aws/example-java.yaml

@@ -0,0 +1,81 @@
+# An unique identifier for the head node and workers of this cluster.
+cluster_name: java
+# The minimum number of workers nodes to launch in addition to the head
+# node. This number should be >= 0.
+min_workers: 1  
+# The maximum number of workers nodes to launch in addition to the head
+# node. This takes precedence over min_workers.
+max_workers: 1
+
+# Cloud-provider specific configuration.
+provider:
+    type: aws
+    region: us-west-2
+    # Availability zone(s), comma-separated, that nodes may be launched in.
+    # Nodes are currently spread between zones by a round-robin approach,
+    # however this implementation detail should not be relied upon.
+    availability_zone: us-west-2a,us-west-2b
+# How Ray will authenticate with newly launched nodes.
+auth:
+    ssh_user: ubuntu
+# Provider-specific config for the head node, e.g. instance type. By default
+# Ray will auto-configure unspecified fields such as SubnetId and KeyName.
+# For more documentation on available fields, see:
+# http://boto3.readthedocs.io/en/latest/reference/services/ec2.html#EC2.ServiceResource.create_instances
+head_node:
+    InstanceType: m4.4xlarge
+    ImageId: ami-06d51e91cea0dac8d # Ubuntu 18.04
+    # You can provision additional disk space with a conf as follows
+    BlockDeviceMappings:
+        - DeviceName: /dev/sda1
+          Ebs:
+              VolumeSize: 20
+    # Additional options in the boto docs.
+# Provider-specific config for worker nodes, e.g. instance type. By default
+# Ray will auto-configure unspecified fields such as SubnetId and KeyName.
+# For more documentation on available fields, see:
+# http://boto3.readthedocs.io/en/latest/reference/services/ec2.html#EC2.ServiceResource.create_instances
+worker_nodes:
+    InstanceType: m4.4xlarge
+    ImageId: ami-06d51e91cea0dac8d # Ubuntu 18.04
+    # Run workers on spot by default. Comment this out to use on-demand.
+    InstanceMarketOptions:
+        MarketType: spot
+        # Additional options can be found in the boto docs, e.g.
+        #   SpotOptions:
+        #       MaxPrice: MAX_HOURLY_PRICE
+# Files or directories to copy to the head and worker nodes. The format is a
+# dictionary from REMOTE_PATH: LOCAL_PATH, e.g.
+file_mounts: {
+#    "/path1/on/remote/machine": "/path1/on/local/machine",
+#    "/path2/on/remote/machine": "/path2/on/local/machine",
+}
+# List of commands that will be run before `setup_commands`. If docker is
+# enabled, these commands will run outside the container and before docker
+# is setup.
+initialization_commands:
+    - sudo apt-get update
+    - sudo apt-get install -y maven
+    - git clone https://github.com/wuisawesome/ray-word-count.git || (pushd ray-word-count; git pull; popd)
+    - pushd ray-word-count; mvn clean package; popd
+    - cp -rv ray-word-count/files ./
+# List of shell commands to run to set up nodes.
+setup_commands:
+    - sudo apt-get install -y python3 python3-pip
+    - python3 -m pip install --upgrade pip
+    - python3 -m pip install https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.9.0.dev0-cp36-cp36m-manylinux1_x86_64.whl
+# Custom commands that will be run on the head node after common setup.
+head_setup_commands:
+    - python3 -m pip install boto3==1.4.8  # 1.4.8 adds InstanceMarketOptions
+# Custom commands that will be run on worker nodes after common setup.
+worker_setup_commands: []
+# Command to start ray on the head node. You don't need to change this.
+head_start_ray_commands:
+    - ray stop
+    - ulimit -n 65536; ray start --head --port=6379 --object-manager-port=8076 --autoscaling-config=~/ray_bootstrap_config.yaml --code-search-path=~/ray-word-count/target
+# Command to start ray on worker nodes. You don't need to change this.
+worker_start_ray_commands:
+    - ray stop
+    - ulimit -n 65536; ray start --address=$RAY_HEAD_IP:6379 --object-manager-port=8076 --code-search-path=ray-word-count/target
+
+# To run the program, run `ray exec java.yaml "java -jar ray-word-count/target/ray-word-count-1.0-SNAPSHOT-jar-with-dependencies.jar"`