1. 6/13/13 HBaseCon 2013

2. 2
SQL

3. 3
MySQL
Storage Engine
Optimizer
Parser
Local Disk

4. Honeycomb
open-source MySQL storage engine
backed by HBase
4

5. MySQL
Honeycomb
HBase

6. Features
6
Honeycomb InnoDB
Cross table joins ✓ ✓
Compound indices ✓ ✓
Unique indices ✓ ✓
Auto Increment Columns ✓ ✓
Stored procedures & views ✓ ✓
Transactions ✓
Foreign key constraints ✓
Automatic sharding ✓
Replication & failover ✓
Map/reduce integration ✓
Map/reduce bulkload ✓

7. 7
Honeycomb HBase Schema

8. 8
Metadata
Rows
Indices
Honeycomb HBase Schema

9. Row format
9
MySQL row[empty]6 table id UUID
RowKey Qualifier Value
variable length encoded
unsigned integer
serialized Avro
data type
single byte prefix

10. Index Format
10
1 or more
variable length encoded
unsigned integer
serialized Avro
data type
single byte prefix
7 table id index id UUIDnull indicator value MySQL row[empty]
Qualifier ValueRowKey

11. Data Duplication
11
duplication factor = 1 + 2i
where i = number of indices

12. Performance
12
Range Limit
Relative Scan
Performance
10 Rows 75%
100 Rows 68%
1000 Rows 51%

13. 13
nearinfinity.github.io/honeycomb
github.com/honeycomb