13.4. Using the HBase Data Store Programmatically

13.4.1. Creating a Data Store

An instance of an HBase data store can be obtained through the normal GeoTools discovery methods, assuming that the GeoMesa code is on the classpath.

The HBase data store also requires that an appropriate hbase-site.xml file is available on the classpath; the connection parameters for HBase are obtained from this file, including hbase.zookeeper.quorum and hbase.zookeeper.property.clientPort.

As an alternative to providing hbase-site.xml, the Zookeeper connection can be specified through the parameter hbase.zookeepers. However, this method is not recommended, as other important configurations (including security, if any) from hbase-site.xml may be required for correct operation.

Map<String, Serializable> parameters = new HashMap<>();
parameters.put("hbase.catalog", "geomesa");
org.geotools.data.DataStore dataStore =
    org.geotools.data.DataStoreFinder.getDataStore(parameters);

13.4.2. HBase Data Store Parameters

The data store takes several parameters (required parameters are marked with *):

Parameter Type Description
hbase.catalog * String The name of the GeoMesa catalog table (previously bigtable.table.name)
hbase.zookeepers String A comma-separated list of servers in the HBase zookeeper ensemble. This is optional, the preferred method for defining the HBase connection is with hbase-site.xml
hbase.coprocessor.url String Path to the GeoMesa jar containing coprocessors, for auto registration
hbase.config.paths String Additional HBase configuration resource files (comma-delimited)
hbase.remote.filtering Boolean Can be used to disable remote filtering and coprocessors, for environments where custom code can’t be installed
hbase.security.enabled Boolean Enable HBase security (visibilities)
geomesa.security.auths String Comma-delimited superset of authorizations that will be used for queries
geomesa.security.force-empty-auths Boolean Forces authorizations to be empty
geomesa.query.audit Boolean Audit queries being run. Queries will be written to a log file
geomesa.query.timeout String The max time a query will be allowed to run before being killed. The timeout is specified as a duration, e.g. 1 minute or 60 seconds
geomesa.query.threads Integer The number of threads to use per query
geomesa.query.loose-bounding-box Boolean Use loose bounding boxes - queries will be faster but may return extraneous results
hbase.ranges.max-per-extended-scan Integer The max number of ranges used for each extended scan
geomesa.stats.generate Boolean Toggle collection of statistics (currently not implemented)
geomesa.query.caching Boolean Toggle caching of results

More information on using GeoTools can be found in the GeoTools user guide.