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WeScala / spark Scala

Lightning-fast cluster computing in Java, Scala and Python. http://spark.incubator.apache.org

http://spark.incubator.apache.org

java scala spark
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项目最近一次提交:大约 5 年 前 77e9da1f3

文件列表 提交日期 作者 提交信息 提交编号
assembly / 2013-09-10 22:05:13 No_avatar Patrick Wendell Fix HDFS access bug with assembly build. 0c1985b1
bagel / 2013-09-01 14:13:16 No_avatar Matei Zaharia Move some classes to more appropriate... 0a8cc309
bin / 2013-09-01 23:45:57 No_avatar Matei Zaharia Run script fixes for Windows after pa... 3db404a4
conf / 2013-09-08 21:39:12 No_avatar Matei Zaharia Merge pull request #905 from mateiz/d... 7d3204b0
core / 2013-09-22 16:50:08 No_avatar jerryshao Change Exception to NoSuchElementExce... 77e9da1f
docs / 2013-09-15 13:29:22 No_avatar Jey Kottalam Fix typo in Maven build docs ac0dd993
ec2 / 2013-09-19 14:09:26 No_avatar Aaron Davidson Fix issue with spark_ec2 seeing empty... f589ce77
examples / 2013-09-06 11:31:16 No_avatar Jey Kottalam Minor YARN build cleanups 30a32c83
mllib / 2013-09-08 21:47:24 No_avatar Matei Zaharia Small tweaks to MLlib docs 7a5c4b64
project / 2013-09-15 12:46:26 No_avatar Patrick Wendell Bumping Mesos version to 0.13.0 c856860c
python / 2013-09-08 00:30:47 No_avatar Aaron Davidson Whoopsy daisy a3868544
repl / 2013-09-06 11:31:16 No_avatar Jey Kottalam Minor YARN build cleanups 30a32c83
repl-bin / 2013-09-06 11:31:16 No_avatar Jey Kottalam Minor YARN build cleanups 30a32c83
sbt / 2013-09-01 23:45:57 No_avatar Matei Zaharia Run script fixes for Windows after pa... 3db404a4
streaming / 2013-09-01 14:13:16 No_avatar Matei Zaharia Move some classes to more appropriate... 0a8cc309
tools / 2013-09-01 14:13:16 No_avatar Matei Zaharia Move some classes to more appropriate... 0a8cc309
yarn / 2013-09-13 15:34:57 No_avatar Patrick Wendell Use different Hadoop version for YARN... e9eba8c3
.gitignore 2013-08-29 21:19:06 No_avatar Matei Zaharia Fix PySpark for assembly run and incl... ab0e625d
LICENSE 2013-09-02 16:43:06 No_avatar Matei Zaharia Updated LICENSE with third-party lice... f586c8ef
NOTICE 2013-07-16 17:21:33 No_avatar Matei Zaharia Add Apache license headers and LICENS... af3c9d50

README.md

Apache Spark

Lightning-Fast Cluster Computing - http://spark.incubator.apache.org/

Online Documentation

You can find the latest Spark documentation, including a programming guide, on the project webpage at http://spark.incubator.apache.org/documentation.html. This README file only contains basic setup instructions.

Building

Spark requires Scala 2.9.3 (Scala 2.10 is not yet supported). The project is built using Simple Build Tool (SBT), which is packaged with it. To build Spark and its example programs, run:

sbt/sbt assembly

Once you've built Spark, the easiest way to start using it is the shell:

./spark-shell

Or, for the Python API, the Python shell (./pyspark).

Spark also comes with several sample programs in the examples directory. To run one of them, use ./run-example <class> <params>. For example:

./run-example org.apache.spark.examples.SparkLR local[2]

will run the Logistic Regression example locally on 2 CPUs.

Each of the example programs prints usage help if no params are given.

All of the Spark samples take a <master> parameter that is the cluster URL to connect to. This can be a mesos:// or spark:// URL, or "local" to run locally with one thread, or "local[N]" to run locally with N threads.

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. You can change the version by setting the SPARK_HADOOP_VERSION environment when building Spark.

For Apache Hadoop versions 1.x, Cloudera CDH MRv1, and other Hadoop versions without YARN, use:

# Apache Hadoop 1.2.1
$ SPARK_HADOOP_VERSION=1.2.1 sbt/sbt assembly

# Cloudera CDH 4.2.0 with MapReduce v1
$ SPARK_HADOOP_VERSION=2.0.0-mr1-cdh4.2.0 sbt/sbt assembly

For Apache Hadoop 2.x, 0.23.x, Cloudera CDH MRv2, and other Hadoop versions with YARN, also set SPARK_YARN=true:

# Apache Hadoop 2.0.5-alpha
$ SPARK_HADOOP_VERSION=2.0.5-alpha SPARK_YARN=true sbt/sbt assembly

# Cloudera CDH 4.2.0 with MapReduce v2
$ SPARK_HADOOP_VERSION=2.0.0-cdh4.2.0 SPARK_YARN=true sbt/sbt assembly

For convenience, these variables may also be set through the conf/spark-env.sh file described below.

When developing a Spark application, specify the Hadoop version by adding the "hadoop-client" artifact to your project's dependencies. For example, if you're using Hadoop 1.0.1 and build your application using SBT, add this entry to libraryDependencies:

"org.apache.hadoop" % "hadoop-client" % "1.2.1"

If your project is built with Maven, add this to your POM file's <dependencies> section:

<dependency>
  <groupId>org.apache.hadoop</groupId>
  <artifactId>hadoop-client</artifactId>
  <version>1.2.1</version>
</dependency>

Configuration

Please refer to the Configuration guide in the online documentation for an overview on how to configure Spark.

Apache Incubator Notice

Apache Spark is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.

Contributing to Spark

Contributions via GitHub pull requests are gladly accepted from their original author. Along with any pull requests, please state that the contribution is your original work and that you license the work to the project under the project's open source license. Whether or not you state this explicitly, by submitting any copyrighted material via pull request, email, or other means you agree to license the material under the project's open source license and warrant that you have the legal authority to do so.