: Subject: How do set compression for compression on stored fields in SOLR 4.2.1 : : https://issues.apache.org/jira/browse/LUCENE-4226 : It mentions that we can set compression mode: : FAST, HIGH_COMPRESSION, FAST_UNCOMPRESSION.
The compression details are hardcoded into the various codecs. If you wanted to customize this, you'd need to write your own codec subclass... https://lucene.apache.org/core/4_2_0/core/org/apache/lucene/codecs/compressing/class-use/CompressionMode.html See, for example, the implementations of Lucene41StoredFieldsFormat and Lucene42TermVectorsFormat... public final class Lucene41StoredFieldsFormat extends CompressingStoredFieldsFormat { /** Sole constructor. */ public Lucene41StoredFieldsFormat() { super("Lucene41StoredFields", CompressionMode.FAST, 1 << 14); } } public final class Lucene42TermVectorsFormat extends CompressingTermVectorsFormat { /** Sole constructor. */ public Lucene42TermVectorsFormat() { super("Lucene41StoredFields", "", CompressionMode.FAST, 1 << 12); } } -Hoss
