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AntsDB
MySQL Compatibility for HBase
August 17,2018
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Content
01
02
04
03
About Us
Scenario
Architecture
Complementary to
HBase
hosted by
About Us01
hosted by
Water Guo
 Founder of AntsDB
 Love Hadoop and HBase but a heavy RDB user in the past
 Love programming for extreme performance
 Previously Software Architecture at Informatica, DataMirror, founder
of BDI Systems.
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AntsDB
 Open source project at https://github.com/waterguo/antsdb
 Problem to resolve: NoSQL is taking over the world but majority of
the data applications are still using RDB
 Database virtualization software
 Attempt to bring MySQL compatibility to HBase
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Scenario02
hosted by
Virtual Telephone Number
 Telecom industry
 Rigid latency requirement: 20ms max
 Data is growing fast
 Built on top of relational database - MySQL
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Solution Architecture
User
Application
Batch Analytics
AntsDB HBase
Spark SQL
hosted by
Lessons Learned
 Linear scalability
 Hadoop ecosystem
 Good random access
performance
 Latency spike
 Transaction
 Join performance
What we like HBase What we were struggling
hosted by
Why don’t cache hot data
 Operational data = hot data
 Historical data = majority of big data
 Daily hot data = 1-5%
 Weekly hot data = 5-10%
 Monthly hot data = 10-15%
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Silver bullet - caching
✧ Large amount local caching using SSD – 500 GB
✧ Local data fetch -> sub-millisecond latency
✧ Distributed transaction -> local transaction
✧ Distributed joins -> local joins
hosted by
AntsDB Architecture03
hosted by
Layers
1
2
3
4
SQL Parser/Executor
Caching
MySQL Network
Transaction
MVCC, row locking
HBase Connectivity
MySQL syntax,functions, data types
JDBC, ODBC, PHP, Python, Native
Data in and out from HBase
hosted by
Architecture
Subtitle Text
AntsDB
Application MySQL Driver
HBase
Cluster
HBase Connector
Transaction
Manager
SQL Parser
Local
CacheTransactions
Query
Result
Query
Result
Query Executor
hosted by
Fight the GC
- Java Unsafe - skip list, cache, WAL, row locking, cursor
- Atomic operation for row locks
- Small heap size - less than 4G
- Escape analysis
- Scan performance : 1 million rows / thread / second
- Insert performance: 200K inserts / thread / second
hosted by
Performance - YCSB write
hosted by
Performance - TPCC
hosted by
Complementary to HBase04
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MySQL Compatibility
 MySQL protocol – JDBC, ODBC, PHP, Python, Native
 Core SQL syntax
 MySQL data types
 MySQL functions – 45
 Low latency transactions
 Low latency joins
 Indexes - Unique, non-unique, full-text
hosted by
MySQL Behaviour Simulation
- Locking
- Commit and rollback
- MVCC
- Quirks such as 0000-00-00 00:00:00 datetime, zerofill integers
- Millisecond latency
hosted by
Compatible applications
 MySQL command line utilities
 MySQL Workebench
 DBeaver
 SquirrelSQL
 MediaWiki
 SonarQube
 PHPMyAdmin
 BechmarkSQL – TPC-C benchmarking
 YCSB
hosted by
High availability
Cluster
Low latency CP system
Next step
hosted by
Thanks

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