Reintroduce HADOOP_CLIENT_OPTS

Author: szarnyasg

Dockerfile

@@ -5,6 +5,8 @@ WORKDIR /opt
 RUN apk add bash curl maven python
 RUN curl -L 'http://archive.apache.org/dist/hadoop/core/hadoop-2.6.0/hadoop-2.6.0.tar.gz' | tar -xz
 
+ENV HADOOP_CLIENT_OPTS '-Xmx8G'
+
 # Copy the project
 COPY . /opt/ldbc_snb_datagen
 WORKDIR /opt/ldbc_snb_datagen
@@ -13,4 +15,4 @@ RUN rm params*.ini
 # Build jar bundle
 RUN mvn -DskipTests clean assembly:assembly
 
-CMD /opt/ldbc_snb_datagen/docker_run.sh
+CMD /opt/ldbc_snb_datagen/docker_run.sh

README.md

@@ -41,6 +41,10 @@ To build, execute the following command from the repository directory:
 docker build . --tag ldbc/datagen
 ```
 
+### Options
+
+To configure the amount of memory available, set the `HADOOP_CLIENT_OPTS` variable in the Dockerfile. The default value is `-Xmx8G`.
+
 ### Running
 
 In order to run the container, a `params.ini` file is required. For reference, please see the `params*.ini` files in the repository. The file will be mounted in the container by the `--mount type=bind,source="$(pwd)/params.ini,target="/opt/ldbc_snb_datagen/params.ini"` option. If required, the source path can be set to a different path.