Closes linkedin#4. DataNodes are launched via SimulatedDataNodes, which uses MiniDFSCluster to launch many DataNodes in the same JVM. Additionally, SimulatedFSDataset is used to avoid the requirement of writing sparse files to the disk - all block metadata is now stored in-memory. (PR linkedin#5)

Author: xkrogen

NOTICE

@@ -3,3 +3,230 @@ All Rights Reserved.
 
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README.md

@@ -163,10 +163,8 @@ First launch the infrastructure application to begin the startup of the internal
     -conf_path my-hadoop-conf
     -fs_image_dir hdfs:///fsimage
     -block_list_path hdfs:///dyno/blocks
-    -datanode_layout_version -56
 ```
-This demonstrates the required arguments. `-datanode_layout_version` is necessary to determine how the block
-files should be laid out on the DataNodes that are launched.
+This demonstrates the required arguments. You can run this with the `-help` flag to see further usage information.
 
 The client will track the Dyno-NN's startup progress and how many Dyno-DNs it considers live. It will notify
 via logging when the Dyno-NN has exited safemode and is ready for use.
@@ -200,11 +198,10 @@ launch an integrated application with the same parameters as were used above, th
     -conf_path my-hadoop-conf
     -fs_image_dir hdfs:///fsimage
     -block_list_path hdfs:///dyno/blocks
-    -datanode_layout_version -56
     -workload_replay_enable
     -workload_input_path hdfs:///dyno/audit_logs/
     -workload_threads_per_mapper 50
     -workload_start_delay 5m
 ```
 When run in this way, the client will automatically handle tearing down the Dyno-HDFS cluster once the
-workload has completed.
+workload has completed. To see the full list of supported parameters, run this with the `-help` flag.

build.gradle

@@ -23,6 +23,7 @@ ext.deps = [
     'yarn-common': "org.apache.hadoop:hadoop-yarn-common:${hadoopVersion}",
     'mapreduce-client-core': "org.apache.hadoop:hadoop-mapreduce-client-core:${hadoopVersion}",
     minicluster: "org.apache.hadoop:hadoop-minicluster:${hadoopVersion}",
+    'hdfs-test': "org.apache.hadoop:hadoop-hdfs:${hadoopVersion}:tests",
   ]
 ]
 

dynamometer-infra/build.gradle

@@ -9,6 +9,7 @@ dependencies {
   compile deps.hadoop.'yarn-api'
   compile deps.hadoop.'yarn-client'
   compile deps.hadoop.'yarn-common'
+  compile deps.hadoop.'hdfs-test'
   compile project(':dynamometer-workload')
 
   testCompile project(path: ':dynamometer-workload', configuration: 'testArtifacts')

dynamometer-infra/src/main/bash/create-slim-hadoop-tar.sh

@@ -27,7 +27,7 @@ hadoopShare="$baseDir/share/hadoop"
 # Remove unnecessary files
 rm -rf ${baseDir}/share/doc ${hadoopShare}/mapreduce ${hadoopShare}/yarn \
        ${hadoopShare}/kms ${hadoopShare}/tools ${hadoopShare}/httpfs \
-       ${hadoopShare}/*/sources ${hadoopShare}/*/jdiff ${hadoopShare}/*/*-tests.jar
+       ${hadoopShare}/*/sources ${hadoopShare}/*/jdiff
 
 tar czf "$hadoopTarTmp.tar.gz" -C "$hadoopTarTmp" .
 rm -rf "$hadoopTarTmp"