Lucene disk buffering test with small heap (-Xmx32m) using Lucene 3.2.0

LuceneRollbackTest.scala

package foo

import org.apache.lucene.document.Document
import org.apache.lucene.document.Field
import com.eaio.uuid.UUID
import org.apache.lucene.store.FSDirectory
import java.io.File
import org.apache.lucene.index.IndexWriter
import org.apache.lucene.analysis.WhitespaceAnalyzer

object LuceneRollbackTest {

  // Run with -Xmx32m
  def main(args: Array[String]) {
    val dir = FSDirectory.open(new File("/tmp/foo"))
    val writer = new IndexWriter(dir, new WhitespaceAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED)

    for (i <- 1 to 10000000) {
      if (i % 10000 == 0) println("Indexing %sth document".format(i))
      val doc = new Document()
      doc.add(new Field("foo", new UUID().toString, Field.Store.YES, Field.Index.ANALYZED))
      doc.add(new Field("bar", new UUID().toString, Field.Store.YES, Field.Index.ANALYZED))
      doc.add(new Field("baz", new UUID().toString, Field.Store.YES, Field.Index.ANALYZED))
      writer.addDocument(doc);
    }

    writer.rollback()
  }

}