Too many open files Error on Lucene

Question

The project I\'m working on is indexing a certain number of data (with long texts) and comparing them with list of words per interval (about 15 to 30 minutes).

After som

Answer 1

Use compound index to reduce file count. When this flag is set, lucene will write a segment as single .cfs file instead of multiple files. This will reduce the number of files significantly.

IndexWriter.setUseCompoundFile(true)