On 4/20/2015 2:55 PM, Vijay Bhoomireddy wrote: > I have configured Solr example server on a pen drive. I have indexed some > content. The data directory was under example/solr/collection1/data which is > the default one. After indexing, I stopped the Solr server and unplugged the > pen drive and reconnected the same. Now, when I navigate to the SolrAdmin > UI, I cannot see any data in the index. > > Any pointers please? In this case, though the installation was on a > pen-drive, I think it shouldn't matter to Solr on where the data directory > is. So I believe this data folder wiping has happened due to server > shutdown. Will the data folder be wiped off if the server is restarted or > stopped? How to save the index data between machine failures or planned > maintenances?
If you are using the default Directory implementation in your solrconfig.xml (NRTCachingDirectoryFactory for 4.x and later, MMapDirectoryFactory for newer 3.x versions), then everything should be persisted correctly. Did you properly unmount/eject the removable volume before you unplugged it? On a non-windows OS, you might also want to run the 'sync' command. If you didn't do the unmount/eject, you can't be sure that the filesystem was properly closed and fully up-to-date on the device. What version of Solr did you use and how exactly did you start Solr and the example? How did you stop Solr? Thanks, Shawn
