Apache Solr vs Elasticsearch-feature
Posted 07H_JH
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API
| Feature | Solr 6.2.1 | ElasticSearch 5.0 |
|---|---|---|
| Format | XML, CSV, JSON | JSON |
| HTTP REST API |  | |
Binary API  | SolrJ | TransportClient, Thrift (through a plugin) |
| JMX support | |  ES specific stats are exposed through the REST API |
| Official client libraries | Java | Java, Groovy, php, Ruby, Perl, Python, .NET, javascript Official list of clients |
| Community client libraries | PHP, Ruby, Perl, Scala, Python, .NET, Javascript, Go, Erlang, Clojure | Clojure, Cold Fusion, Erlang, Go, Groovy, Haskell, Java, JavaScript, .NET, OCaml, Perl, PHP, Python, R, Ruby, Scala, Smalltalk, Vert.x Complete list |
| 3rd-party product integration (open-source) | Drupal, Magento, Django, ColdFusion, Wordpress, OpenCMS, Plone, Typo3, ez Publish, Symfony2, Riak (via Yokozuna) | Drupal, Django, Symfony2, Wordpress, CouchBase |
| 3rd-party product integration (commercial) | DataStax Enterprise Search, Cloudera Search, Hortonworks Data Platform, MapR | SearchBlox, Hortonworks Data Platform, MapR etc Complete list |
| Output | JSON, XML, PHP, Python, Ruby, CSV, Velocity, XSLT, native Java | JSON, XML/html (via plugin) |
Infrastructure
| Feature | Solr 6.2.1 | ElasticSearch 5.0 |
|---|---|---|
| Master-slave replication | Only in non-SolrCloud. In SolrCloud, behaves identically to ES. | Not an issue because shards are replicated across nodes. |
| Integrated snapshot and restore | Filesystem | Filesystem, AWS Cloud Plugin for S3 repositories, HDFS Plugin for Hadoop environments, Azure Cloud Plugin for Azure storage repositories |
Indexing
| Feature | Solr 6.2.1 | ElasticSearch 5.0 |
|---|---|---|
| Data Import | DataImportHandler - JDBC, CSV, XML, Tika, URL, Flat File | [DEPRECATED in 2.x] Rivers modules - ActiveMQ, Amazon SQS, CouchDB, Dropbox, DynamoDB, FileSystem, Git, GitHub, Hazelcast, JDBC, JMS, Kafka, LDAP, MongoDB, neo4j, OAI, RabbitMQ, Redis, RSS, Sofa, Solr, St9, Subversion, Twitter, Wikipedia |
| ID field for updates and deduplication | | |
| DocValues | | |
| Partial Doc Updates | with stored fields | with _source field |
| Custom Analyzers and Tokenizers | | |
| Per-field analyzer chain | | |
| Per-doc/query analyzer chain | | |
| Index-time synonyms | | Supports Solr and Wordnet synonym format |
| Query-time synonyms | especially via hon-lucene-synonyms | Technically, yes, but practically no because multi-word/phrase query-time synonyms are not supported. See ES docs and hon-lucene-synonyms blog for nuances. |
| Multiple indexes | | |
| Near-Realtime Search/Indexing | | |
| Complex documents | | |
| Schemaless | 4.4+ | |
| Multiple document types per schema | One set of fields per schema, one schema per core | |
| Online schema changes | Schemaless mode or via dynamic fields. | Only backward-compatible changes. |
| Apache Tika integration | | |
| Dynamic fields | | |
| Field copying | | via multi-fields |
| Hash-based deduplication | | Murmur plugin or ER plugin |
Searching
| Feature | Solr 6.2.1 | ElasticSearch 5.0 |
|---|---|---|
| Lucene Query parsing | | |
| Structured Query DSL | Need to programmatically create queries if going beyond Lucene query syntax. | |
| Span queries | via SOLR-2703 | |
| Spatial/geo search | | |
| Multi-point spatial search | | |
| Faceting | | Top N term accuracy can be controlled with shard_size |
| Advanced Faceting | New JSON faceting API as of Solr 5.x | blog post |
| Geo-distance Faceting | | |
| Pivot Facets | | |
| More Like This | | |
| Boosting by functions | | |
| Boosting using scripting languages | | |
| Push Queries | JIRA issue | Percolation. Distributed percolation supported in 1.0 |
| Field collapsing/Results grouping | | |
| Query Re-Ranking | | via Rescoring or a plugin |
| Index-based Spellcheck | | Phrase Suggester |
| Wordlist-based Spellcheck | | |
| Autocomplete | | |
| Query elevation | | workaround |
| Intra-index joins | via parent-child query | via has_children and top_children queries |
| Inter-index joins | Joined index has to be single-shard and replicated across all nodes. | |
| Resultset Scrolling | New to 4.7.0 | via scan search type |
| Filter queries | | also supports filtering by native scripts |
| Filter execution order | local params and cache property | |
| Alternative QueryParsers Apache Solr vs Elasticsearch-feature
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