DBMS > Apache Druid vs. H2GIS vs. Impala
System Properties Comparison Apache Druid vs. H2GIS vs. Impala
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|Editorial information provided by DB-Engines|
|Name||Apache Druid Xexclude from comparison||H2GIS Xexclude from comparison||Impala Xexclude from comparison|
|Description||Open-source analytics data store designed for sub-second OLAP queries on high dimensionality and high cardinality data||Spatial extension of H2||Analytic DBMS for Hadoop|
|Primary database model||Relational DBMS|
Time Series DBMS
|Spatial DBMS||Relational DBMS|
|Secondary database models||Relational DBMS||Document store|
|Developer||Apache Software Foundation and contributors||CNRS||Cloudera|
|Current release||26.0.0, May 2023||4.1.0, June 2022|
|License Commercial or Open Source||Open Source Apache license v2||Open Source LGPL 3.0||Open Source Apache Version 2|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||Linux|
|Data scheme||yes schema-less columns are supported||yes||yes|
|Typing predefined data types such as float or date||yes||yes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||no||no||no|
|SQL Support of SQL||SQL for querying||yes||SQL-like DML and DDL statements|
|APIs and other access methods||JDBC|
RESTful HTTP/JSON API
|Supported programming languages||Clojure|
|Java||All languages supporting JDBC/ODBC|
|Server-side scripts Stored procedures||no||yes based on H2||yes user defined functions and integration of map-reduce|
|Partitioning methods Methods for storing different data on different nodes||Sharding manual/auto, time-based||none||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, via HDFS, S3 or other storage engines||yes based on H2||selectable replication factor|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||yes query execution via MapReduce|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||no|
|Concurrency Support for concurrent manipulation of data||yes||yes, multi-version concurrency control (MVCC)||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes||no|
|User concepts Access control||RBAC using LDAP or Druid internals for users and groups for read/write by datasource and system||yes based on H2||Access rights for users, groups and roles based on Apache Sentry and Kerberos|
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