Can't open lucene index (Java heap space)

Question

I want to grab some data from lucene index file. But I can't read it.

I try to use Luke, but it always crashes with java.lang.OutOfMemoryError: Java heap space. Note -Xmx can't help me. I try -Xmx512, -Xmx1024 and even -Xmx2048.

I try to use Solr also, but gets java.lang.OutOfMemoryError: Java heap space too.

Any ideas how I can extract some data from Lucene?

P. S. I use lucene 2.3.0. My index file is 1.8 Gb size.

Answer 1

What size is the data you are trying to fetch? Maybe the result set is too large to handle?

Answer 2

I create my own simple lucene client, based on org.apache.lucene.search.Searcher. And grab data that I want.