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From yuncheng lu <>
Subject Ask about Lucene/Core/Index DocumentsWriter
Date Mon, 18 Mar 2019 17:35:24 GMT
When i check the code lucene/core DocumentsWriter.preUpdate code. I see the
flushControl is used when thread is Stalled.
When we have a lot of documents write into disk which is SSD. We monitored
that the thread is all in flush, and request continuously use addDocument
which can go into preUpdate check, it make more flush request into IO
queue. As this situation, it make all request blocked, and disk util is no
full of usage. So may be this optimization can take more condition into

Thanks & Best Regards
Yuncheng Lu

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