History

Jeremy Freudberg 7910521a7e Totally rewrite s3_hadoop Remedying of patchings, version conflicts, classpath issues, etc. ALSO: Switch the Hadoop libraries used on the Spark standalone plugin to Hadoop 2.7.3. The version was previously 2.6.5, to match Cloudera's so-called "Hadoop 2.6.0", but in fact this concordance is not at all necessary... Change-Id: Iafafb64fd60a1ae585375a68173c84fbb82c7e1f		2018-07-02 11:51:28 -04:00
..
install.d	Use Cloudera element for Spark HDFS	2015-07-10 14:12:37 +00:00
post-install.d	Merge Vanilla and Spark plugins	2016-09-07 12:12:58 +00:00
root.d	Totally rewrite s3_hadoop	2018-07-02 11:51:28 -04:00
README.rst	Merge Vanilla and Spark plugins	2016-09-07 12:12:58 +00:00
element-deps	Use Cloudera element for Spark HDFS	2015-07-10 14:12:37 +00:00
package-installs.yaml	Start switching to declarative package-installs	2015-04-15 00:44:54 +08:00

README.rst

spark

Installs Spark. Requires Hadoop.

This element will install Spark. It tries to guess the correct file to download based on the DIB_SPARK_VERSION and DIB_CDH_VERSION, but this behaviour can be overridden by using SPARK_DOWNLOAD_URL to specify a download URL for a pre-built Spark tar.gz file. See http://spark.apache.org/downloads.html for more download options.

Versions

This element is able to generate images containing any valid Spark version, compiled against one version of Hadoop HDFS libraries.

Only some combinations of Spark and Hadoop versions are possible, depending on the availability of a pre-compiled binary and only few of them are tested with the Sahara Spark plugin.

The diskimage-create.sh script will use tested defaults. Those defaults generate an image supported by the Sahara Spark plugin. Other combinations should be used only for evaluation or testing purposes. Refer to the Sahara Spark plugin wiki page (https://wiki.openstack.org/wiki/Sahara/SparkPlugin) for more information about tested and supported versions.

Environment Variables

DIB_SPARK_VERSION

Required: Yes, if SPARK_DOWNLOAD_URL is not set.
Description: Version of the Spark package to download.
Example: DIB_SPARK_VERSION=1.3.1

DIB_CDH_VERSION

Required: Required only for images for Spark Plugin and if SPARK_DOWNLOAD_URL is not set.
Description: Version of the CDH platform to use for Hadoop compatibility. CDH version 5.3 is known to work well.
Example: DIB_CDH_VERSION=5.3

SPARK_DOWNLOAD_URL

Required: No, if set overrides DIB_CDH_VERSION and DIB_SPARK_VERSION
Description: Download URL of a tgz Spark package to override the automatic selection from the Apache repositories.