DBMS > Hawkular Metrics vs. Impala
System Properties Comparison Hawkular Metrics vs. Impala
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|Editorial information provided by DB-Engines|
|Name||Hawkular Metrics Xexclude from comparison||Impala Xexclude from comparison|
|Description||Hawkular metrics is the metric storage of the Red Hat sponsored Hawkular monitoring system. It is based on Cassandra.||Analytic DBMS for Hadoop|
|Primary database model||Time Series DBMS||Relational DBMS|
|Secondary database models||Document store|
|Developer||Community supported by Red Hat||Cloudera|
|Current release||4.1.0, June 2022|
|License Commercial or Open Source||Open Source Apache 2.0||Open Source Apache Version 2|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Linux|
|Typing predefined data types such as float or date||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|
|SQL Support of SQL||no||SQL-like DML and DDL statements|
|APIs and other access methods||HTTP REST||JDBC|
|Supported programming languages||Go|
|All languages supporting JDBC/ODBC|
|Server-side scripts Stored procedures||no||yes user defined functions and integration of map-reduce|
|Triggers||yes via Hawkular Alerting||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding based on Cassandra||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||selectable replication factor based on Cassandra||selectable replication factor|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||yes query execution via MapReduce|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency based on Cassandra|
Immediate Consistency based on Cassandra
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||no|
|User concepts Access control||no||Access rights for users, groups and roles based on Apache Sentry and Kerberos|
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