README.md

GeoMesa is an open source suite of tools that enables large-scale geospatial querying and analytics on distributed computing systems. GeoMesa provides spatio-temporal indexing on top of the Accumulo, HBase, Google Bigtable and Cassandra databases for massive storage of point, line, and polygon data. GeoMesa also provides near real time stream processing of spatio-temporal data by layering spatial semantics on top of Apache Kafka. Through GeoServer, GeoMesa facilitates integration with a wide range of existing mapping clients over standard OGC (Open Geospatial Consortium) APIs and protocols such as WFS and WMS. GeoMesa supports Apache Spark for custom distributed geospatial analytics.

GeoMesa is a member of the LocationTech working group of the Eclipse Foundation.

Join the Community

• 
• GeoMesa Users and Dev mailing lists
• GeoMesa JIRA for issue tracking

Documentation

• Main documentation

• Quick Starts: HBase | Accumulo | Cassandra | Kafka | Redis | FileSystem

• Tutorials

Downloads

Current release: 2.4.0

     HBase | Accumulo | Cassandra | Kafka | Redis | FileSystem | Bigtable | Source | CheckSums

Development version: 2.5.0-SNAPSHOT

    

Verifying Downloads

Downloads hosted on GitHub include SHA-256 hashes and gpg signatures (.asc files). To verify a download using gpg, import the appropriate key:

$ gpg2 --keyserver hkp://pool.sks-keyservers.net --recv-keys CD24F317

Then verify the file:

$ gpg2 --verify geomesa-accumulo_2.11-2.4.0-bin.tar.gz.asc geomesa-accumulo_2.11-2.4.0-bin.tar.gz

The keys currently used for signing are:

Key ID	Name
CD24F317	Emilio Lahr-Vivaz <elahrvivaz(-at-)ccri.com>
1E679A56	James Hughes <jnh5y(-at-)ccri.com>

Upgrading

To upgrade between minor releases of GeoMesa, the versions of all GeoMesa components must match.

This means that the version of the geomesa-accumulo-distributed-runtime JAR installed on Accumulo tablet servers must match the version of the geomesa-accumulo-gs-plugin JAR installed in the WEB-INF/lib directory of GeoServer.

See the Upgrade Guide for information on specific version updates.

Maven Integration

GeoMesa is now hosted on Maven Central. However, it still depends on several third-party libraries only available in other repositories. To include GeoMesa in your project, add the following repositories to your pom:

<repositories>
  <!-- geotools -->
  <repository>
    <id>osgeo</id>
    <url>https://repo.osgeo.org/repository/release</url>
  </repository>
  <!-- confluent -->
  <repository>
    <id>confluent</id>
    <url>https://packages.confluent.io/maven/</url>
  </repository>
</repositories>

You may then include the desired geomesa-* dependencies, for example:

<dependency>
  <groupId>org.locationtech.geomesa</groupId>
  <artifactId>geomesa-utils_2.11</artifactId>
  <version>2.4.0</version>
</dependency>

To download from the LocationTech Maven repository (required for older versions), add:

<repository>
  <id>eclipse-releases</id>
  <url>https://repo.eclipse.org/content/groups/releases</url>
  <snapshots>
    <enabled>false</enabled>
  </snapshots>
</repository>

For nightly snapshot integration, add:

<repository>
  <id>geomesa-snapshots</id>
  <url>https://repo.eclipse.org/content/repositories/geomesa-snapshots</url>
  <releases>
    <enabled>false</enabled>
  </releases>
  <snapshots>
    <enabled>true</enabled>
  </snapshots>
</repository>

sbt Integration

Similarly, integration with sbt is straightforward:

// Add necessary resolvers
resolvers ++= Seq(
  "osgeo" at "https://repo.osgeo.org/repository/release",
  "confluent" at "https://packages.confluent.io/maven"
)

// Select desired modules
libraryDependencies ++= Seq(
  "org.locationtech.geomesa" %% "geomesa-utils" % "2.4.0"
)

Building from Source

Requirements:

• Git
• Java JDK 8
• Apache Maven 3.6.3 or later

Use Git to download the source code. Navigate to the destination directory, then run:

git clone git@github.com:locationtech/geomesa.git
cd geomesa

The project is managed by Maven. To build, run:

mvn clean install

The full build takes quite a while. To speed it up, you may skip tests and use multiple threads. GeoMesa also provides the script build/mvn, which is a wrapper around Maven that downloads and runs Zinc, a fast incremental compiler:

build/mvn clean install -T8 -DskipTests

If the Zinc build fails with an error finding "javac", try setting the JAVA_HOME environment variable to point to the root of your JDK. Example from a Mac:

JAVA_HOME="/Library/Java/JavaVirtualMachines/jdk1.8.0_51.jdk/Contents/Home" build/mvn clean install