Shai Erera created LUCENE-4164:
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Summary: Improve IndexWriter.addIndexes(IndexReader javadocs)
Key: LUCENE-4164
URL: https://issues.apache.org/jira/browse/LUCENE-4164
Project: Lucene - Java
Issue Type: Improvement
Components: core/index
Reporter: Shai Erera
Assignee: Shai Erera
Priority: Trivial
Fix For: 4.0, 5.0
IndexWriter.addIndexes(IndexReader) needs some improvements:
* It falsely states that this method blocks any add/delete documents attempts.
* It merges all input IndexReaders at once, and not e.g. like MergePolicy does
at mergeFactor steps. Therefore I think it'd be good to clarify it to the user,
and also encourage him to call this method several times if he has many
IndexReaders to merge.
** And while at it, mentioning that the IR can be opened with
termIndexInterval=-1 since we don't need it during merge will be good -- saves
RAM.
I'll attach a patch shortly.
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