Overview (Ignite 2.16.0)

Ignite-indexing SQL engine
Package	Description
org.apache.ignite.indexing	Contains Ignite-indexing module classes and interfaces.

Other Packages
Package	Description
org.apache.ignite.internal.processors.query.h2	Contains default H2-based indexing SPI implementation.
org.apache.ignite.internal.processors.query.h2.affinity
org.apache.ignite.internal.processors.query.h2.database
org.apache.ignite.internal.processors.query.h2.dml	Contains routines for executing DML statements on top of H2.
org.apache.ignite.internal.processors.query.h2.opt
org.apache.ignite.internal.processors.query.h2.opt.join
org.apache.ignite.internal.processors.query.h2.sql
org.apache.ignite.internal.processors.query.h2.sys
org.apache.ignite.internal.processors.query.h2.sys.view
org.apache.ignite.internal.processors.query.h2.twostep
org.apache.ignite.internal.processors.query.h2.twostep.msg