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DBMS > Apache HBase vs. etcd vs. OpenMLDB

System Properties Comparison Apache HBase vs. etcd vs. OpenMLDB

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Editorial information provided by DB-Engines
NameApache HBase  Xexclude from comparisonetcd  Xexclude from comparisonOpenMLDB  Xexclude from comparison
DescriptionWide-column store based on Apache Hadoop and on concepts of BigTableA distributed reliable key-value storeAn open-source machine learning database that provides a feature platform for training and inference
Primary database modelWide column storeKey-value storeTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score24.48
Rank#26  Overall
#2  Wide column stores
Score7.06
Rank#47  Overall
#5  Key-value stores
Score0.02
Rank#368  Overall
#38  Time Series DBMS
Websitehbase.apache.orgetcd.io
github.com/­etcd-io/­etcd
openmldb.ai
Technical documentationhbase.apache.org/­book.htmletcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
openmldb.ai/­docs/­zh/­main
DeveloperApache Software Foundation infoApache top-level project, originally developed by Powerset4 Paradigm Inc.
Initial release20082020
Current release2.3.4, January 20213.4, August 20192024-2 February 2024
License infoCommercial or Open SourceOpen Source infoApache version 2Open Source infoApache Version 2.0Open Source
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaGoC++, Java, Scala
Server operating systemsLinux
Unix
Windows infousing Cygwin
FreeBSD
Linux
Windows infoexperimental
Linux
Data schemeschema-free, schema definition possibleschema-freeFixed schema
Typing infopredefined data types such as float or dateoptions to bring your own types, AVROnoyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonono
Secondary indexesnonoyes
SQL infoSupport of SQLnonoyes
APIs and other access methodsJava API
RESTful HTTP API
Thrift
gRPC
JSON over HTTP
JDBC
SQLAlchemy
Supported programming languagesC
C#
C++
Groovy
Java
PHP
Python
Scala
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
C++
Go
Java
Python
Scala
Server-side scripts infoStored proceduresyes infoCoprocessors in Javanono
Triggersyesyes, watching key changesno
Partitioning methods infoMethods for storing different data on different nodesShardinghorizontal partitioning
Replication methods infoMethods for redundantly storing data on multiple nodesMulti-source replication
Source-replica replication
Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.Source-replica replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency or Eventual ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataSingle row ACID (across millions of columns)nono
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesnoyes
User concepts infoAccess controlAccess Control Lists (ACL) for RBAC, integration with Apache Ranger for RBAC & ABACnofine grained access rights according to SQL-standard

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More resources
Apache HBaseetcdOpenMLDB
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