Solr Becoming Slow After a While

This is perhaps the most obvious and “not very helpful” post for quite a few people, but for those who experience this issue, it’ll save the day. While doing a test index routine of around 6 million documents, things would get really slow at the moment I passed 1 million documents in the index. Weird. Optimizing didn’t help, as it died with an exception after a while.

The reason?

Not enough free disk space. Solr was indexing to a different partition than I thought.

Solved everything.

One thought on “Solr Becoming Slow After a While”

  1. Thanks for this post. I didn’t find the reason that our solr indexing slows down after a while. Reloading the core helps … maybe a cache issue (to be investigated).

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