DSE Search/Solr versus Open Source Solr
Differences between DSE Search/Solr and Open Source Solr (OSS).
By virtue of its integration into DataStax Enterprise, differences exist between DSE Search/Solr and Open Source Solr (OSS).
Major differences
The major differences in capabilities are:
Capability | DSE | OS Solr | Description |
---|---|---|---|
Includes a database | yes | no | A user has to create an interface to add a database to OSS. |
Indexes real-time data | yes | no | Cassandra ingests real-time data and Solr indexes the data. |
Provides an intuitive way to update data | yes | no | DataStax provides a SQL-like language and command-line shell, CQL, for loading and updating data. Data added to Cassandra shows up in Solr |
Indexes Hadoop output without ETL | yes | no | Cassandra ingests the data, Solr indexes the data, and you run MapReduce against that data in one cluster. |
Supports data distribution | yes | yes [1] | DataStax Enterprise distributes Cassandra real-time, Hadoop, and Solr data to multiple nodes in a cluster transparently. |
Balances loads on nodes/shards | yes | no | Unlike OSS and Solr Cloud loads can be rebalanced efficiently. |
Spans indexes over multiple data centers | yes | no | A cluster can have more than one data center for different types of nodes. |
Automatically re-indexes Solr data | yes | no | The only way to re-index data in OSS is to have the client re-ingest everything. |
Stores data added through Solr in Cassandra | yes | no | Data updated using the Solr API shows up in Cassandra. |
Makes durable updates to data | yes | no | Updates are durable and written to the Cassandra commit log regardless of how the update is made. |
Upgrades of Lucene preserve data | yes | no | DataStax integrates Lucene upgrades periodically and when you upgrade DSE, data is preserved. OSS users must re-ingest all their data when upgrading to Lucene. |
Security | yes | no | DataStax has extended SolrJ to protect internal communication and HTTP access. Solr data can be encrypted and audited. |
[1] Requires using Zookeeper.