@Sandeep Nemuri helped me work through this. Here are updated steps: Clone Hadoop. From the trunk branch run the following command to install protoc 2.5: brew install protobuf250 Run the following command to create symlinks for protoc 2.5: brew link --overwrite --force protobuf250 You can use the following command to verify that protoc 2.5 has been installed: protoc --version Use the following command to build ozone: mvn clean package -Phdds -Pdist -Dtar -DskipShade -DskipTests -Dmaven.javadoc.skip=true Go to the directory that contains the Docker compose files: cd <path_to_local_github>/hadoop/hadoop-dist/target/ozone-0.2.1-SNAPSHOT/compose/ozone Start ozone: docker-compose up -d Log in to the DataNode container: docker exec-it ozone_datanode_1 bash Run the ozone load generator: bin/ozone freon -validateWrites -numOfVolumes 5 -numOfBuckets 10 -numOfKeys 10 Now you should be able to see the OzoneManager UI at http://localhost:9874/ ... View more

@Ajay, I checked out the HDFS-7240 branch and ran the build command (on Mac OS X). That seemed to work and downloaded a bunch of files, but then failed saying "hdsl" does not exist: [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 12.615 s [INFO] Finished at: 2018-08-30T07:09:47-04:00 [INFO] Final Memory: 127M/1258M [INFO] ------------------------------------------------------------------------ [WARNING] The requested profile "hdsl" could not be activated because it does not exist. [ERROR] Failed to execute goal org.apache.hadoop:hadoop-maven-plugins:3.2.0-SNAPSHOT:protoc (compile-protoc) on project hadoop-common: org.apache.maven.plugin.MojoExecutionException: 'protoc --version' did not return a version -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException [ERROR] [ERROR] After correcting the problems, you can resume the build with the command [ERROR] mvn <goals> -rf :hadoop-common <br> ... View more