bitcoin/doc/release-notes-35531.md

Index

• The transaction index (-txindex) now stores less data on disk; a fully rebuilt index takes less than half the space. The index is backwards compatible, so existing users will not see the space saving unless the index is recreated. To do so, stop the node, delete the <datadir>/indexes/txindex directory, and restart; rebuilding can take up to a few hours depending on hardware. Progress can be monitored using the getindexinfo RPC. Once rebuilt, the index can no longer be read by previous releases, so downgrading will rebuild it again in the old format. When downgrading permanently, delete the <datadir>/indexes/txindex directory first, since previous releases do not reclaim the space used by entries in the new format. (#35531)