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From Zheng Lin Edwin Yeo <>
Subject Slower indexing speed in Solr 8.0.0
Date Wed, 03 Apr 2019 02:17:25 GMT

I am setting up the latest Solr 8.0.0, and I am re-indexing the data from
scratch in Solr 8.0.0

However, I found that the indexing speed is slower in Solr 8.0.0, as
compared to the earlier version like Solr 7.7.1. I have not changed the
schema.xml and solrconfig.xml yet, just did a change of the
luceneMatchVersion in solrconfig.xml to 8.0.0

On average, the speed is about 40% to 50% slower. For example, the indexing
speed was about 17 mins in Solr 7.7.1, but now it takes about 25 mins to
index the same set of data.

What could be the reason that causes the indexing to be slower in Solr


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