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DockerHadoop
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  1. 20
      Makefile
  2. 63
      README.md
  3. 43
      hadoop.env

20
Makefile
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DOCKER_NETWORK = docker-hadoop_default
ENV_FILE = hadoop.env
current_branch := $(shell git rev-parse --abbrev-ref HEAD)
build:
docker build -t bde2020/hadoop-base:$(current_branch) ./base
docker build -t bde2020/hadoop-namenode:$(current_branch) ./namenode
docker build -t bde2020/hadoop-datanode:$(current_branch) ./datanode
docker build -t bde2020/hadoop-resourcemanager:$(current_branch) ./resourcemanager
docker build -t bde2020/hadoop-nodemanager:$(current_branch) ./nodemanager
docker build -t bde2020/hadoop-historyserver:$(current_branch) ./historyserver
docker build -t bde2020/hadoop-submit:$(current_branch) ./submit
wordcount:
docker build -t hadoop-wordcount ./submit
docker run --network ${DOCKER_NETWORK} --env-file ${ENV_FILE} bde2020/hadoop-base:$(current_branch) hdfs dfs -mkdir -p /input/
docker run --network ${DOCKER_NETWORK} --env-file ${ENV_FILE} bde2020/hadoop-base:$(current_branch) hdfs dfs -copyFromLocal -f /opt/hadoop-3.2.1/README.txt /input/
docker run --network ${DOCKER_NETWORK} --env-file ${ENV_FILE} hadoop-wordcount
docker run --network ${DOCKER_NETWORK} --env-file ${ENV_FILE} bde2020/hadoop-base:$(current_branch) hdfs dfs -cat /output/*
docker run --network ${DOCKER_NETWORK} --env-file ${ENV_FILE} bde2020/hadoop-base:$(current_branch) hdfs dfs -rm -r /output
docker run --network ${DOCKER_NETWORK} --env-file ${ENV_FILE} bde2020/hadoop-base:$(current_branch) hdfs dfs -rm -r /input

63
README.md
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[![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/big-data-europe/Lobby)
# Changes
Version 2.0.0 introduces uses wait_for_it script for the cluster startup
# Hadoop Docker
## Supported Hadoop Versions
See repository branches for supported hadoop versions
## Quick Start
To deploy an example HDFS cluster, run:
```
docker-compose up
```
Run example wordcount job:
```
make wordcount
```
Or deploy in swarm:
```
docker stack deploy -c docker-compose-v3.yml hadoop
```
`docker-compose` creates a docker network that can be found by running `docker network list`, e.g. `dockerhadoop_default`.
Run `docker network inspect` on the network (e.g. `dockerhadoop_default`) to find the IP the hadoop interfaces are published on. Access these interfaces with the following URLs:
* Namenode: http://<dockerhadoop_IP_address>:9870/dfshealth.html#tab-overview
* History server: http://<dockerhadoop_IP_address>:8188/applicationhistory
* Datanode: http://<dockerhadoop_IP_address>:9864/
* Nodemanager: http://<dockerhadoop_IP_address>:8042/node
* Resource manager: http://<dockerhadoop_IP_address>:8088/
## Configure Environment Variables
The configuration parameters can be specified in the hadoop.env file or as environmental variables for specific services (e.g. namenode, datanode etc.):
```
CORE_CONF_fs_defaultFS=hdfs://namenode:8020
```
CORE_CONF corresponds to core-site.xml. fs_defaultFS=hdfs://namenode:8020 will be transformed into:
```
<property><name>fs.defaultFS</name><value>hdfs://namenode:8020</value></property>
```
To define dash inside a configuration parameter, use triple underscore, such as YARN_CONF_yarn_log___aggregation___enable=true (yarn-site.xml):
```
<property><name>yarn.log-aggregation-enable</name><value>true</value></property>
```
The available configurations are:
* /etc/hadoop/core-site.xml CORE_CONF
* /etc/hadoop/hdfs-site.xml HDFS_CONF
* /etc/hadoop/yarn-site.xml YARN_CONF
* /etc/hadoop/httpfs-site.xml HTTPFS_CONF
* /etc/hadoop/kms-site.xml KMS_CONF
* /etc/hadoop/mapred-site.xml MAPRED_CONF
If you need to extend some other configuration file, refer to base/entrypoint.sh bash script.

43
hadoop.env
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CORE_CONF_fs_defaultFS=hdfs://namenode:9000
CORE_CONF_hadoop_http_staticuser_user=root
CORE_CONF_hadoop_proxyuser_hue_hosts=*
CORE_CONF_hadoop_proxyuser_hue_groups=*
CORE_CONF_io_compression_codecs=org.apache.hadoop.io.compress.SnappyCodec
HDFS_CONF_dfs_webhdfs_enabled=true
HDFS_CONF_dfs_permissions_enabled=false
HDFS_CONF_dfs_namenode_datanode_registration_ip___hostname___check=false
YARN_CONF_yarn_log___aggregation___enable=true
YARN_CONF_yarn_log_server_url=http://historyserver:8188/applicationhistory/logs/
YARN_CONF_yarn_resourcemanager_recovery_enabled=true
YARN_CONF_yarn_resourcemanager_store_class=org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore
YARN_CONF_yarn_resourcemanager_scheduler_class=org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler
YARN_CONF_yarn_scheduler_capacity_root_default_maximum___allocation___mb=8192
YARN_CONF_yarn_scheduler_capacity_root_default_maximum___allocation___vcores=4
YARN_CONF_yarn_resourcemanager_fs_state___store_uri=/rmstate
YARN_CONF_yarn_resourcemanager_system___metrics___publisher_enabled=true
YARN_CONF_yarn_resourcemanager_hostname=resourcemanager
YARN_CONF_yarn_resourcemanager_address=resourcemanager:8032
YARN_CONF_yarn_resourcemanager_scheduler_address=resourcemanager:8030
YARN_CONF_yarn_resourcemanager_resource__tracker_address=resourcemanager:8031
YARN_CONF_yarn_timeline___service_enabled=true
YARN_CONF_yarn_timeline___service_generic___application___history_enabled=true
YARN_CONF_yarn_timeline___service_hostname=historyserver
YARN_CONF_mapreduce_map_output_compress=true
YARN_CONF_mapred_map_output_compress_codec=org.apache.hadoop.io.compress.SnappyCodec
YARN_CONF_yarn_nodemanager_resource_memory___mb=16384
YARN_CONF_yarn_nodemanager_resource_cpu___vcores=8
YARN_CONF_yarn_nodemanager_disk___health___checker_max___disk___utilization___per___disk___percentage=98.5
YARN_CONF_yarn_nodemanager_remote___app___log___dir=/app-logs
YARN_CONF_yarn_nodemanager_aux___services=mapreduce_shuffle
MAPRED_CONF_mapreduce_framework_name=yarn
MAPRED_CONF_mapred_child_java_opts=-Xmx4096m
MAPRED_CONF_mapreduce_map_memory_mb=4096
MAPRED_CONF_mapreduce_reduce_memory_mb=8192
MAPRED_CONF_mapreduce_map_java_opts=-Xmx3072m
MAPRED_CONF_mapreduce_reduce_java_opts=-Xmx6144m
MAPRED_CONF_yarn_app_mapreduce_am_env=HADOOP_MAPRED_HOME=/opt/hadoop-3.2.1/
MAPRED_CONF_mapreduce_map_env=HADOOP_MAPRED_HOME=/opt/hadoop-3.2.1/
MAPRED_CONF_mapreduce_reduce_env=HADOOP_MAPRED_HOME=/opt/hadoop-3.2.1/
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