21.2. Installing GeoMesa Lambda¶

21.2.1. Installing from the Binary Distribution¶

GeoMesa Lambda artifacts are available for download or can be built from source. The easiest way to get started is to download the most recent binary version (2.4.1) from GitHub.

Extract it somewhere convenient:

# download and unpackage the most recent distribution:
$ wget "https://github.com/locationtech/geomesa/releases/download/geomesa_2.11-$VERSION/geomesa-lambda-dist_2.11-$VERSION-bin.tar.gz"
$ tar xvf geomesa-lambda-dist_2.11-$VERSION-bin.tar.gz
$ cd geomesa-lambda-dist_2.11-$VERSION
$ ls
bin/  conf/  dist/  docs/  examples/  lib/  LICENSE.txt  logs/

21.2.2. Building from Source¶

GeoMesa Lambda may also be built from source. For more information refer to Building from Source in the developer manual, or to the README.md file in the the source distribution. The remainder of the instructions in this chapter assume the use of the binary GeoMesa Lambda distribution. If you have built from source, the distribution is created in the target directory of geomesa-lambda/geomesa-lambda-dist.

More information about developing with GeoMesa may be found in the Developer Manual.

21.2.3. Installing the Accumulo Distributed Runtime Library¶

The Lambda data store requires the Accumulo data store distributed runtime to be installed. See Installing the Accumulo Distributed Runtime Library.

21.2.4. Setting up the Lambda Command Line Tools¶

GeoMesa comes with a set of command line tools located in geomesa-lambda_2.11-$VERSION/bin/ of the binary distribution.

Note

You can configure environment variables and classpath settings in geomesa-lambda_2.11-$VERSION/conf/geomesa-env.sh.

In the geomesa-lambda_2.11-$VERSION directory, run bin/geomesa-lambda configure to set up the tools.

Warning

Please note that the $GEOMESA_LAMBDA_HOME variable points to the location of the geomesa-lambda_2.11-$VERSION directory, not the main geomesa binary distribution directory.

Note

geomesa-lambda will read the $ACCUMULO_HOME, $HADOOP_HOME and $KAFKA_HOME environment variables to load the runtime dependencies. If possible, we recommend installing the tools on the Accumulo master server, as you may also need various configuration files from Hadoop/Accumulo in order to run certain commands.

GeoMesa provides the ability to provide additional jars on the classpath using the environmental variable $GEOMESA_EXTRA_CLASSPATHS. GeoMesa will prepend the contents of this environmental variable to the computed classpath giving it highest precedence in the classpath. Users can provide directories of jar files or individual files using a colon (:) as a delimiter. These entries will also be added the the mapreduce libjars variable. Use the geomesa classpath command to print the final classpath that will be used when executing geomesa commands.

If you are running the tools on a system without Accumulo, Hadoop, or Kafka, the install-hadoop-accumulo.sh and install-kafka.sh scripts in the bin directory may be used to download the required JARs into the lib directory. You should edit this script to match the versions used by your installation.

Note

See Logging Configuration for information about configuring the SLF4J implementation.

Due to licensing restrictions, dependencies for shape file support must be separately installed. Do this with the following commands:

$ bin/install-jai.sh
$ bin/install-jline.sh

Test the command that invokes the GeoMesa Tools:

$ geomesa-lambda
Usage: geomesa-lambda [command] [command options]
  Commands:
  ...

Note

GeoMesa Accumulo command-line tools can be used against features which have been persisted to Accumulo. See Setting up the Accumulo Command Line Tools for details on the Accumulo command-line tools.

21.2.5. Installing GeoMesa Lambda in GeoServer¶

Warning

See GeoServer Versions to ensure that GeoServer is compatible with your GeoMesa version.

As described in section GeoMesa and GeoServer, GeoMesa implements a GeoTools-compatible data store. This makes it possible to use GeoMesa as a data store in GeoServer. GeoServer’s web site includes installation instructions for GeoServer.

After GeoServer is installed, you may install the WPS plugin if you plan to use GeoMesa processes. The GeoServer WPS Plugin must match the version of the GeoServer instance. The GeoServer website includes instructions for downloading and installing the WPS plugin.

Note

If using Tomcat as a web server, it will most likely be necessary to pass some custom options:

export CATALINA_OPTS="-Xmx8g -XX:MaxPermSize=512M -Duser.timezone=UTC \
-server -Djava.awt.headless=true"

The value of -Xmx should be as large as your system will permit. Be sure to restart Tomcat for changes to take place.

To install the GeoMesa Lambda data store as a GeoServer plugin, unpack the contents of the geomesa-lambda-gs-plugin_2.11-$VERSION-install.tar.gz file in geomesa-lambda_2.11-$VERSION/dist/geoserver/ in the binary distribution or geomesa-$VERSION/geomesa-lambda/geomesa-lambda-gs-plugin/target/ in the source distribution into your GeoServer’s lib directory ($VERSION = 2.4.1):

If you are using Tomcat:

$ tar -xzvf \
  geomesa-lambda_2.11-$VERSION/dist/geoserver/geomesa-lambda-gs-plugin_2.11-$VERSION-install.tar.gz \
  -C /path/to/tomcat/webapps/geoserver/WEB-INF/lib/

If you are using GeoServer’s built in Jetty web server:

$ tar -xzvf \
  geomesa-lambda_2.11-$VERSION/dist/geoserver/geomesa-lambda-gs-plugin_2.11-$VERSION-install.tar.gz \
  -C /path/to/geoserver/webapps/geoserver/WEB-INF/lib/

There are additional JARs for Accumulo, Zookeeper, Hadoop, Thrift and Kafka that you will need to copy to GeoServer’s WEB-INF/lib directory. The versions required will be specific to your installation. For example, GeoMesa only requires Hadoop 2.6 or later, but if you are using Hadoop 2.5.0 you should use the JARs that match the version of Hadoop you are running.

Warning

Due to a classpath conflict with GeoServer, the version of Accumulo client JARs installed must be 1.9.2 or later. Note that newer Accumulo clients can talk to older Accumulo instances, so it is only necessary to upgrade the client JARs in GeoServer, but not the entire Accumulo cluster.

There are scripts in the geomesa-lambda_2.11-$VERSION/bin directory (install-hadoop-accumulo.sh, install-kafka.sh) which will install these dependencies to a target directory using curl (requires an internet connection).

Note

You may have to edit install-hadoop-accumulo.sh and/or install-kafka.sh to set the versions of Accumulo, Zookeeper, Hadoop, Thrift and Kafka that you are running.

If you do no have an internet connection you can download the JARs manually via http://search.maven.org/. These may include the JARs below; the specific JARs needed for some common configurations are listed below:

Accumulo 1.6

accumulo-core-1.6.5.jar
accumulo-fate-1.6.5.jar
accumulo-server-base-1.6.5.jar
accumulo-trace-1.6.5.jar
accumulo-start-1.6.5.jar
libthrift-0.9.1.jar
zookeeper-3.4.6.jar
commons-vfs2-2.0.jar

Accumulo 1.7+ (note the addition of htrace)

accumulo-core-1.7.1.jar
accumulo-fate-1.7.1.jar
accumulo-server-base-1.7.1.jar
accumulo-trace-1.7.1.jar
accumulo-start-1.7.1.jar
libthrift-0.9.1.jar
zookeeper-3.4.6.jar
htrace-core-3.1.0-incubating.jar
commons-vfs2-2.1.jar

Hadoop 2.2

commons-configuration-1.6.jar
hadoop-auth-2.2.0.jar
hadoop-client-2.2.0.jar
hadoop-common-2.2.0.jar
hadoop-hdfs-2.2.0.jar

Hadoop 2.4-2.7 (adjust versions as needed)

commons-configuration-1.6.jar
hadoop-auth-2.6.4.jar
hadoop-client-2.6.4.jar
hadoop-common-2.6.4.jar
hadoop-hdfs-2.6.4.jar

Kafka 0.9.0.1

kafka_2.11-0.9.0.1.jar
kafka-clients-0.9.0.1.jar”
zookeeper-3.4.5.jar”
zkclient-0.7.jar”
metrics-core-2.2.0.jar

Restart GeoServer after the JARs are installed.

21.2.5.1. Accumulo Versions¶

Note

GeoMesa targets Accumulo 1.8 as a runtime dependency. Most artifacts will work with older versions of Accumulo without changes, however some artifacts which bundle Accumulo will need to be built manually. Accumulo 1.8 introduced a dependency on libthrift version 0.9.3 which is not compatible with Accumulo 1.7/libthrift 0.9.1. To target an earlier Accumulo version, modify <accumulo.version> and <thrift.version> in the main pom.xml and re-build.

21.2.5.2. GeoMesa Process¶

Note

Some GeoMesa-specific WPS processes such as geomesa:Density, which is used in the generation of heat maps, also require geomesa-process-wps_2.11-$VERSION.jar. This JAR is included in the geomesa-lambda_2.11-$VERSION/dist/gs-plugins directory of the binary distribution, or is built in the geomesa-process module of the source distribution.

21.2.6. Upgrading¶

To upgrade between minor releases of GeoMesa, the versions of all GeoMesa components must match. This means that the version of the geomesa-distributed-runtime JAR installed on Accumulo tablet servers must match the version of the geomesa-plugin JARs installed in the WEB-INF/lib directory of GeoServer.

We strive to maintain backwards compatibility for data ingested with older releases of GeoMesa, and in general data ingested with older releases may be read with newer ones (note that the reverse does not apply). For example, data ingested with GeoMesa 1.2.2 may be read with 1.2.3.

It should be noted, however, that data ingested with older GeoMesa versions may not take full advantage of indexing improvements in newer releases. If it is not feasible to reingest old data, see Updating Existing Data to the Latest Index Format for more information on updating its index format.