https://mdaalam.com.np/tags/data-recovery/ Recent content in Data Recovery on @mdaalam22 Hugo 0.125.0 en Sat, 29 Aug 2026 12:00:00 +0545 https://mdaalam.com.np/posts/solr-crash-recovery/ Sat, 29 Aug 2026 12:00:00 +0545 https://mdaalam.com.np/posts/solr-crash-recovery/ It was an ordinary afternoon when our Solr 9.7.0 core, emailIndex, crashed in the middle of a heavy write cycle. We restarted the container and expected Solr to recover on its own. Instead, the core refused to come back up. In the end it took us about five hours to bring it back. The recovery was more surgical than we’d hoped — we rebuilt the index’s internal map file by hand instead of re-indexing from scratch.