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Apache Accumulo vs. LMDB

Apache Accumulo LMDB + Add column
Category
Preference (43% global votes) (57% global votes)
Website accumulo.​apache.​org symas.​com/​mdb
License
Design
Database model
Data storage
Embeddable No Yes
Features
Query language
Data types
Conditional entry updates Yes No
Map and reduce Yes No
Unicode Yes No
TTL for entries Yes No
Compression Yes No
Integrity
Integrity model
Atomicity Conditional Yes
Consistency Yes Yes
Isolation Yes Yes
Durability (data storage) Yes Yes
Transactions No Yes
Referential integrity No No
Revision control Yes No
Locking model
Indexing
Secondary Indexes Yes No
Composite keys Yes No
Full text search No No
Geospatial Indexes No No
Graph support Yes No
Graph type ?
Distribution
Horizontal scalable Yes No
Replication Yes No
Replication mode
Sharding Yes No
Shared nothing architecture Yes ?
Restrictions
Value size max. 1 EB 4 GB
System requirements
Operating system
Native driver
Memory minimum 8 GB 64 kB
Architecture
Programming language
More
Description A distributed database featuring cell level security and server-side computation Memory-Mapped, Copy-on-Write
Brand
Multi-user system Yes Yes
Extension/Plug-in Yes ?
Database
Multilingual content Yes ?
Price rating ★★★★★ ★★★★★
Multiple projects Yes ?
Standard compliance Yes ?
Software distribution
Release Date September 2011 September 2011
Documentation level ★★★☆☆ ★★★★★
RESTful No ?
Distributed Counter Yes ?
Free to use Yes Yes
Active Yes Yes
Database Connection Pooling Yes ?
Real time analytics Yes Yes
Community Driven Basic Good
API Basic Basic
Log Yes ?
Implementation flexibility (50% global votes) (50% global votes)
Download accumulo.​apache.​org/​downloads/​ gitorious.​org/​mdb
Level of access authorization ?
Query Cache Yes No
Ease of use ★★★☆☆ ★★★★☆
Free for commercial use Yes Yes
Sorts Yes Yes
Open Source Yes Yes
Perfomance ★★★★☆ ★★★★★
Server Side Java Script No ?
JSON Yes Yes
Flexible Table(Schema) No ?
Fully Distributed Yes ?
Stored Procedure No ?
Concurrency Yes ?
Auto-Sharding Yes ?
Free edition Yes ?
Kafka Integration Yes ?
SQL Queries No ?
420 Friendly? Yes ?
Recursive queries No ?
CLI` Yes ?
Hadoop Integration Yes ?
Lines of code ? 7 k
Creation Date ? 2009
Online backup ? Yes
Function Based Index ? No
Backup functionality ? Good
In-Place Update ? Yes
Read preferences ? No
Maximum size ? 9.2 EB
Batch Loading ? Yes
Corruption Resistant ? Yes
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Apache Accumulo LMDB
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