Set this value using the Java Heap Size of Solr Server in Bytes Solr configuration property.
||No requirement. Solr uses HDFS for storage.|
- Size of searchable material: The more searchable material you have, the more memory you need. All things being equal, 10 TB of searchable data requires more memory than 1 TB of searchable data.
- Content indexed in the searchable material: Indexing all fields in a collection of logs, email messages, or Wikipedia entries requires more memory than indexing only the Date Created field.
The level of performance required: If the system must be stable and respond quickly, more memory may help. If slow responses are acceptable, you may be able to use less memory.