Scaling Solr with Solr Cloud
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How to make the most of your Solr Cloud clusters.
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Scaling Solr with Solr Cloud
- 1. Scaling Solr with SolrCloud Rafał Kuć – Sematext Group, Inc. @kucrafal @sematext sematext.com
- 2. Ta me… Sematext consultant & engineer Solr.pl co-founder Father and husband
- 3. Solr History Solr 4.1 and counting Solr 4.0 released Lucene / Solr merge Solr 1.4 released Solr 1.3 released Incubator graduation Solr donated to ASF Y. Seeley creates Solr
- 4. The Past
- 5. Master – Slave Deployment Solr Slave Solr Slave Solr Slave Solr Master Application Solr Slave
- 6. Master as SPOF Solr Slave Solr Slave Solr Slave Solr Master Application Solr Slave
- 7. Replication Time Solr Slave Indexing App Solr Master Solr R Slave Solr Slave Querying App
- 8. Too Much for a Single Shard Solr Slave Solr Slave Solr Master Application
- 9. Too Much for a Single Shard Solr Slave Solr Slave Solr Master Solr Slave Solr Slave Solr Master Application Solr Slave Solr Master Solr Slave
- 10. Querying in Multi Master Deployment Shard1, shard2, shard3 Solr Slave Shard 2 Doc Shard1, shard2, shard3 Solr Slave Response Shard 1 Application Solr Slave Shard 3 Response
- 11. SolrCloud Comes Into Play
- 12. Basic Glossary Cluster Node Collection Shard Leader & Replica Overseer https://cwiki.apache.org/confluence/display/solr/SolrCloud+Glossary
- 13. Apache ZooKeeper Quorum is required Sample configuration clientPort=2181 dataDir=/usr/share/zookeeper/data tickTime=2000 initLimit=10 syncLimit=5 server.1=192.168.1.1:2888:3888 server.2=192.168.1.2:2888:3888 server.3=192.168.1.3:2888:3888 ZooKeeper ZooKeeper ZooKeeper
- 14. Solr Instances -DzkHost=192.168.1.1:2181, 192.168.1.2:2181,192.168.1.3:2181 Solr Server -DzkHost=192.168.1.2:2181, 192.168.1.1:2181,192.168.1.3:2181 Solr Server ZooKeeper ZooKeeper ZooKeeper -DzkHost=192.168.1.3:2181, 192.168.1.1:2181,192.168.1.2:2181 Solr Server -DzkHost=192.168.1.3:2181, 192.168.1.1:2181,192.168.1.2:2181 Solr Server
- 15. Collection Creation Solr Server $ curl $ cloud-scripts/zkcli.sh –cmd upconfig -zkhostSolr Server 'http://solr1:8983/solr/admin/collections?action=CREATE& 192.168.1.2:2181 -confdir name=revolution&numShards=2&replicationFactor=1' /usr/share/config/revolution/conf -conf revolution Solr Server ZooKeeper ZooKeeper ZooKeeper Solr Server
- 16. Single Collection Deployment Shard1 Shard2 Solr Server Solr Server Solr Server Solr Server Application
- 17. Collection with Replica Solr Server Solr Server $ curl 'http://solr1:8983/solr/admin/collections?action=CREATE& name=revolution&numShards=2&replicationFactor=2' Solr Server ZooKeeper ZooKeeper ZooKeeper Solr Server
- 18. Collection with Replicas Shard1 Replica Shard2 Replica Solr Server Solr Server Shard2 Shard1 Solr Server Solr Server Application
- 19. Querying Shard2 Id,score Shard1 Id,score Solr Server Solr Server QUERY Solr Server Application
- 20. Querying Shard2 doc Shard1 doc Solr Server Solr Server Results Solr Server Application
- 21. Shard and Replica Number How your data looks Expected data growth Target performance Target node number Max number of nodes = number of shards * (number of replicas + 1)
- 22. What should I go for? More data? Shard Shard Shard More queries ? Replica Replica Replica Replica Replica Replica
- 23. Custom Routing Default (numShards present, pre 4.5) Implicit (numShards not present, pre 4.5)
- 24. Custom Routing Example Shard1 Shard2 Solr Server Solr Server id=userB!3 id=userA!1 id=userA!2
- 25. Querying Solr – Default Routing Shard 1 Shard 2 Shard 3 Shard 4 Shard 5 Shard 6 Shard 7 Shard 8 Solr Collection Application
- 26. Quering Solr – Custom Routing Shard 1 Shard 2 Shard 3 Shard 4 Shard 5 Shard 6 Shard 7 Shard 8 Solr Collection q=revolution&_route_=userA! Application
- 27. Collection Manipulation Commands Create Delete Reload Split Create Alias Delete Alias Shard Creation/Deletion http://wiki.apache.org/solr/SolrCloud
- 29. Collection Split Example $ curl 'http://solr1:8983/solr/admin/collections?action=CREATE& name=collection1&numShards=2&replicationFactor=1'
- 30. Collection Split Example $ curl 'http://localhost:8983/solr/admin/collections? action=SPLITSHARD&collection=collection1&shard=shard1'
- 31. Collection Aliasing $ curl 'http://solr1:8983/solr/admin/collections? action=CREATEALIAS&name=weekly&collections=20131107, 20131108,20131109,20131110,20131111,20131112,20131113' $ curl 'http://solr1:8983/solr/weekly/select?q=revolution' $ curl 'http://solr1:8983/solr/admin/collections? action=DELETEALIAS&name=weekly'
- 32. Caches Refreshed with IndexSearcher Configurable Different purposes Different implementations Solr Cache
- 33. Filter Cache <filterCache class="solr.FastLRUCache" size="512" initialSize="512" autowarmCount="128" /> q=lucene+revolution+city:Dublin q=lucene+revolution&fq=city:Dublin q=*:*&fq={!cache=false}city:Dublin q=*:*&fq={!frange l=0 u=10 cache=false cost=200}sum(price,pro)
- 35. Query Result Cache <queryResultCache class="solr.LRUCache" size="512" initialSize="512" autowarmCount="128"/> q=lucene+revolution+city:Dublin&sort=date+desc&start=0&rows=10 q=lucene+revolution&fq=city:Dublin&sort=date+desc&start=0&rows=10 <queryResultWindowSize>20</queryResultWindowSize> <queryResultMaxDocsCached>200</queryResultMaxDocsCached>
- 36. Warming <listener event="newSearcher" class="solr.QuerySenderListener"> <arr name="queries"> <lst><str name="q">*:*</str><str name="sort">date desc</str></lst> <lst><str name="q">keywords:* OR tags:*</str></lst> <lst><str name="q">*:*</str><str name="fq">active:*</str></lst> </arr> </listener> <listener event="firstSearcher" class="solr.QuerySenderListener"> <arr name="queries"> <lst><str name="q">*:*</str><str name="sort">date desc</str></lst> <lst><str name="q">keywords:* OR tags:*</str></lst> <lst><str name="q">*:*</str><str name="fq">active:*</str></lst> </arr> </listener> <useColdSearcher>false</useColdSearcher>
- 37. The Right Directory StandardDirectory SimpleFSDirectory NIOFSDirectory MMapDirectory _0.fdt _0.fdx _0.fnm _0.nvd _1.fdt _1.fdx _1.fnm _1.nvd NRTCachingDirectory RAMDirectory <directoryFactory name="DirectoryFactory" class="solr.NRTCachingDirectoryFactory" />
- 38. Column oriented fields - DocValues NRT compatible Better compression than field cache Can store data outside of JVM heap Can improve things for dynamic indices <field name="categories" type="string" indexed="false" stored="false" multiValued="true" docValues="true"/> <field name="categories" type="string" indexed="false" stored="false" multiValued="true" docValues="true" docValuesFormat="Disk"/>
- 39. Segment Merge Level 0 a b f Level 1 c c d e g
- 40. Segment Merge Under Control Merge policy Merge scheduler Merge factor Merge policy configuration
- 41. Configuring Segment Merge <mergePolicy class="org.apache.lucene.index.TieredMergePolicy"> <int name="maxMergeAtOnce">10</int> <int name="segmentsPerTier">10</int> </mergePolicy> <mergeScheduler class="org.apache.lucene.index.ConcurrentMergeScheduler"/> <mergedSegmentWarmer class="org.apache.lucene.index.SimpleMergedSegmentWarmer"/> <mergeFactor>10</mergeFactor>
- 42. Indexing Throughput Tuning Maximum indexing threads RAM buffer size Maximum buffered documents Bulk, bulks and bulks CloudSolrServer Autocommit Cutting off unnecessary stuff
- 43. TransactionLog Updates durability Recovering peer replay Performant Realtime Get <updateLog> <str name="dir">${solr.ulog.dir:}</str> </updateLog> <requestHandler name="/get" class="solr.RealTimeGetHandler"> </requestHandler>
- 44. Autocommit or Not? Automatic data flush Automatic index view refresh <autoCommit> <maxTime>15000</maxTime> <maxDocs>1000</maxDocs> <openSearcher>false</openSearcher> </autoCommit> <autoSoftCommit> <maxTime>1000</maxTime> </autoSoftCommit>
- 47. Postings Formats to the Rescue Lucene 4.0 >= Flexible Indexing Postings == docs, positions, payloads Different postings formats available Bloom Pulsing Simple text Direct Memory <codecFactory class="solr.SchemaCodecFactory" /> <field name="id" type="string_pulsing" indexed="true" stored="true" /> <fieldType name="string_pulsing" class="solr.StrField" postingsFormat="Pulsing41" />
- 48. Monitoring Cluster state Nodes utilization Memory usage Cache utilization Query response time Warmup times Garbage collector work
- 49. JMX and Solr
- 50. JMX and Solr
- 55. Other Monitoring Tools Ganglia http://ganglia.sourceforge.net/ New Relic http://www.newrelic.com/ Opsview http://www.opsview.com
- 56. We Are Hiring ! Dig Search ? Dig Analytics ? Dig Big Data ? Dig Performance ? Dig working with and in open – source ? We’re hiring world – wide ! http://sematext.com/about/jobs.html
- 57. Thank You ! Rafał Kuć @kucrafal rafal.kuc@sematext.com Sematext @sematext http://sematext.com http://blog.sematext.com SPM discount code: LR2013SPM20 @ Sematext booth ;)