To get started easily with Sparkoscope you can use the docker image provided here
Starts a one-node hdfs cluster, starts Sparkoscope and gives bash shell to the user to execute the spark examples.
Run it by giving:
docker run --rm -it -p 4040:4040 -p 8080:8080 -p 18080:18080 -p 8888:8888 yiannisgkoufas/sparkoscope
Then once on the bash shell give:
bin/run-example SparkPi 10000
Configure Sigar metrics source
In all the nodes of the cluster Hyperic Sigar library must be installed. Download from http://sourceforge.net/projects/sigar/files/sigar/1.6/hyperic-sigar-1.6.4.zip/download. Extract the zip in any location.
In spark-env.sh you need to add to LD_LIBRARY_PATH variable the directory of the native libraries of Sigar. For instance:
LD_LIBRARY_PATH=/path/to/hyperic-sigar-1.6.4/sigar-bin/lib/:$LD_LIBRARY_PATH #In case you plan to use Sparkoscope on Yarn SPARK_YARN_USER_ENV="LD_LIBRARY_PATH=$LD_LIBRARY_PATH"
Add the source definition to metrics.properties
In spark-env.sh you need to set the HADOOP_CONF_DIR variable to the configuration directory of your hadoop installation. For instance:
Configure hdfs metrics sink
In order for the executor metrics to be stored in HDFS and therefore be retrieved by the UI, you need to have the following in the metrics.properties file:
executor.sink.hdfs.class=org.apache.spark.metrics.sink.HDFSSink executor.sink.hdfs.pollPeriod = 20 executor.sink.hdfs.dir = hdfs://localhost:9000/custom-metrics executor.sink.hdfs.unit = seconds
Realtime Plots configuration
The same metrics that are exposed in the history server, now they can be viewed in real time on the application page.
As the application is running, the plots can be viewed in http://masterIP:8080/app/?appId=app-XXXXXXXXX-XXX You should modify the spark-defaults.conf the following way:
spark.moquette.port 1883 spark.moquette.websocket_port 8888
In the metrics.properties of every worker you should add the following entries:
executor.sink.mqtt.class=org.apache.spark.metrics.sink.MQTTSink executor.sink.mqtt.pollPeriod = 1 executor.sink.mqtt.host = masterIP executor.sink.mqtt.port = 1883 executor.sink.mqtt.unit = seconds
Where executor.sink.mqtt.port is the same as spark.moquette.port and masterIP is the host where Spark Master is running
Event and UI configuration
Start history server
Event logging must be enabled in spark-defaults.conf:
spark.eventLog.enabled true spark.eventLog.dir hdfs://127.0.0.1:9000/spark-logs spark.history.fs.logDirectory hdfs://127.0.0.1:9000/spark-logs
Also in spark-defaults.conf you should specify the folder from which the UI will read the metrics:
Access history server in http://localhost:18080/
Click the specific application and view the plots
Notes about the metrics
The metrics are grouped per application and the user can access the plots by selecting the Name entry under the Completed Applications table. The URL on the browser should look similar to http://ip-of-spark-master:port/history/app-201511XXXXXX-XXX Under the dropdown menu Executor Metrics the user can plot any of the metrics provided per executor but also metrics of the operating system of the host (physical or virtual):
Percentage of RAM utilization
Percentage of CPU utilization
sigar.kBytesRxPerSecond / sigar.kBytesTxPerSecond
Number of Kilobytes received/transmitted from/to the network per second
sigar.kBytesReadPerSecond / sigar.kBytesWrittenPerSecond
Number of Kilobytes read/written from/to the disk per second
The folders spark.eventLog.dir, executor.sink.hdfs.dir and spark.hdfs.metrics.dir must already exist in the HDFS.
You should increase the limit for open files on the operating systems of the Master and the Workers.
Be sure to build spark according to the version of hadoop you are using.
Spark is a fast and general cluster computing system for Big Data. It provides high-level APIs in Scala, Java, Python, and R, and an optimized engine that supports general computation graphs for data analysis. It also supports a rich set of higher-level tools including Spark SQL for SQL and DataFrames, MLlib for machine learning, GraphX for graph processing, and Spark Streaming for stream processing.
You can find the latest Spark documentation, including a programming guide, on the project web page. This README file only contains basic setup instructions.
Spark is built using Apache Maven. To build Spark and its example programs, run:
build/mvn -DskipTests clean package
(You do not need to do this if you downloaded a pre-built package.)
You can build Spark using more than one thread by using the -T option with Maven, see "Parallel builds in Maven 3". More detailed documentation is available from the project site, at "Building Spark".
For general development tips, including info on developing Spark using an IDE, see [http://spark.apache.org/developer-tools.html](the Useful Developer Tools page).
Interactive Scala Shell
The easiest way to start using Spark is through the Scala shell:
Try the following command, which should return 1000:
scala> sc.parallelize(1 to 1000).count()
Interactive Python Shell
Alternatively, if you prefer Python, you can use the Python shell:
And run the following command, which should also return 1000:
Spark also comes with several sample programs in the
To run one of them, use
./bin/run-example <class> [params]. For example:
will run the Pi example locally.
You can set the MASTER environment variable when running examples to submit
examples to a cluster. This can be a mesos:// or spark:// URL,
"yarn" to run on YARN, and "local" to run
locally with one thread, or "local[N]" to run locally with N threads. You
can also use an abbreviated class name if the class is in the
package. For instance:
MASTER=spark://host:7077 ./bin/run-example SparkPi
Many of the example programs print usage help if no params are given.
Testing first requires building Spark. Once Spark is built, tests can be run using:
Please see the guidance on how to run tests for a module, or individual tests.
A Note About Hadoop Versions
Spark uses the Hadoop core library to talk to HDFS and other Hadoop-supported storage systems. Because the protocols have changed in different versions of Hadoop, you must build Spark against the same version that your cluster runs.
Please refer to the build documentation at "Specifying the Hadoop Version" for detailed guidance on building for a particular distribution of Hadoop, including building for particular Hive and Hive Thriftserver distributions.
Please refer to the Configuration Guide in the online documentation for an overview on how to configure Spark.
Please review the Contribution to Spark guide for information on how to get started contributing to the project.