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From Jan Høydahl / Cominvent <>
Subject Indexing and threads
Date Tue, 28 Sep 2010 13:32:16 GMT

How are threads being used when indexing?

Let's say document A and B are ingested in parallell to XMLUpdateRequestHandler in two separate
How far down the chain are the processing of these done in the two separate threads?
Is the full UpdateRequestChain run in the same thread as the incoming request?
Is analysis done in the request thread or in a single indexing thread?
Are ADDs added to the same "commit queue", and then from COMMIT and down to Lucene segment
building everything is single-threaded?

Jan Høydahl, search solution architect
Cominvent AS -
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