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Is there a way to dynamically update a synonym file without restarting Solr server?

As we know there is a synonym.txt file in conf directory, which I wanted to update whenever I found some new synonym words...

So is there any way to update that file dynamically without restarting the Solr server and will my search result consider the new synonym words??

please help me if anyone have any idea.. thanks in advance...

Solution

  • I think you can build your own SynonymFilterFactory that extends the original and use your a custom FSTSynonymFilterFactory as delegator. your SynonymFilterFactory should extends the original SlowSynonymFilterFactory and call:

    map = loadSolrSynonyms(loader, true, analyzer);

    whenever you want to reload the synonym file.

    For reloading your file when it changes you can use a watchdog thread that awke up every X time and check whether the sysnonim file was changed or you can use some file watcher to get notification when the file was changed.