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Scale
for Your Java Applications
Philipp Krenn @xeraa
@xeraa
Developer
@xeraa
@xeraa
Terminology
Cluster, Node, Index, Shard
@xeraa
Disclaimer
This is not a benchmark
@xeraa
Injector
@xeraa
Download
http://download.elastic.co/workshops/basic-kibana/injector/
injector-7.0.jar
@xeraa
Use
$ java -jar injector-7.0.jar 
--nb 1000 --bulk 100 
--debug 
--elasticsearch --es.host http://localhost:9200 
--es.user elastic --es.pass changeme 
--es.index person 
--console --cs.pretty
@xeraa
{
"name": "Mamadou Colombe",
"dateofbirth": "2009-12-26",
"gender": "male",
"children": 4,
"marketing": {
"cars": null,
"shoes": null,
"toys": 1688,
"fashion": null,
"music": 243,
"garden": null,
"electronic": 1222,
"hifi": null,
"food": null
},
"address": {
"country": "France",
"zipcode": "75000",
"city": "Paris",
"countrycode": "FR",
"location": {
"lon": 2.3250817954678284,
"lat": 48.857148516731385
}
}
}
@xeraa
Monitoring
@xeraa
time
$ time java -jar injector-7.0.jar ...
@xeraa
Stack Monitoring
@xeraa
Bulk Requests
@xeraa
1,000 Docs & Bulk Size 1
Executed in 37.87 secs fish external
usr time 13.08 secs 135.00 micros 13.08 secs
sys time 1.00 secs 752.00 micros 1.00 secs
@xeraa
1,000 Docs & Bulk Size 100
Executed in 4.01 secs fish external
usr time 7.49 secs 134.00 micros 7.49 secs
sys time 0.43 secs 738.00 micros 0.43 secs
@xeraa
1,000 Docs & Bulk Size 100
Executed in 3.91 secs fish external
usr time 6.34 secs 138.00 micros 6.34 secs
sys time 0.38 secs 843.00 micros 0.38 secs
@xeraa
Optimal Bulk Size?
@xeraa
It Depends
Document size (100B, 1KB, 100KB, 1MB,...)
Number of nodes & shards
Node size
Load on the cluster
@xeraa
Refresh
@xeraa
index.refresh_interval
Default 1s
30s or -1
@xeraa
10,000 Docs & Refresh 1s
Executed in 10.23 secs fish external
usr time 11.50 secs 124.00 micros 11.50 secs
sys time 0.77 secs 845.00 micros 0.77 secs
@xeraa
10,000 Docs & Refresh 30s
Executed in 10.02 secs fish external
usr time 11.87 secs 120.00 micros 11.87 secs
sys time 0.74 secs 730.00 micros 0.74 secs
@xeraa
Load
Distribution
@xeraa
Nodes
Master
Data
Coordinating
@xeraa
Topology
Sniffing
Cloud Proxy
@xeraa
Distribution
Round Robin
Adaptive Replica Selection for searches
@xeraa
Index & Shard
Strategy
@xeraa
Defaults
7.0: 1 primary, 1 replica
Before: 5 primary, 1 replica
@xeraa
Index Patterns
Static vs Time-Based
@xeraa
Time-Based
Don't _delete_by_query
Do daily / weekly / ... patterns
Or even better Rollover
@xeraa
Shard Size
>10GB, maybe ~50GB
It depends
@xeraa
Shards per GB Heap
<20
@xeraa
Pagination
@xeraa
Pagination
GET person/_search
{
"from" : 0,
"size" : 10,
"sort": [
{
"dateofbirth": {
"order": "asc"
}
}
]
}
@xeraa
Deep Pagination
GET person/_search
{
"from" : 5000,
"size" : 10,
"sort": [
{
"dateofbirth": {
"order": "asc"
}
}
]
}
@xeraa
Error
GET person/_search
{
"from" : 10000,
"size" : 10,
"sort": [
{
"dateofbirth": {
"order": "asc"
}
}
]
}
@xeraa
For Your Protection
index.max_result_window: 10000
Search After
Scroll
@xeraa
Profiler
@xeraa
Benchmarks
@xeraa
Rally
Macrobenchmarking Framework for
Elasticsearch
https://github.com/elastic/rally
@xeraa
Nightly Benchmarks
https://benchmarks.elastic.co
@xeraa
Conclusion
@xeraa
Topics
Monitoring
Bulk & Refresh
Load Distribution
@xeraa
Topics
Index & Shard Strategy
Pagination
Benchmarks
@xeraa
It Depends
@xeraa
Free & Open
@xeraa
Scale
for Your Java Applications
Philipp Krenn @xeraa
@xeraa

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