pg_clearxlogtail

A utility to clear ("zero out") any unused space at the end of a WAL file
This entry relates to a PostgreSQL feature, application/utility, website or other subject which is no longer available/maintained.

pg_clearxlogtail was an external utility to clear ("zero out") any unused space at the end of a WAL file. This had the effect of making WAL files more compressible, particularly after explicitly switching a WAL file.

The need for this utility was removed in PostgreSQL 9.4, when PostgreSQL was modified to perform this action itself (commit 9a20a9b2).

Categories

Management / adminstration, Obsolete, Replication, Utility program

See also

WAL