Doug Cutting wrote:

Grant Ingersoll wrote:

The thread safety issues are on the search side usage of Analyzer, not indexing.


Primarily search, but not exclusively. IndexWriter is thread safe. One can add documents to a single IndexWriter instance from multiple threads. Tokenization will be done in parallel.

Doug

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Can you clarify this for me? Will the tokenStream method of an Analyzer instance ever be called concurrently? I see in typical analyzer implementations a Tokenizer and TokenFilters are instantiated anew with each call and thus skirt the issue.

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