1. Do I have to do this with a NEW directory? Our nightly index merger uses an existing "target" index which I assume will re-use the same settings as before? I did this last night and it still seems to use the same amount of memory. Above you assert that I should use a new empty directory and I'll try that tonight.
You need to re-write the entire index using a modified TermIndexWriter.java. Optimize rewrites the entire index but is destructive. Merging into a new empty directory is a non-destructive way to do this.
2. This isn't destructive is it? I mean I'll be able to move BACK to a TermInfosWriter.indexInterval of 128 right?
Yes, you can go back if you re-optimize or re-merge again.
Also, there's no need to CC my personal email address.
Doug
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