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Alvaro Herrera authored
If a walsender exits leaving data in reorderbuffers, the next walsender that tries to decode the same transaction would append its decoded data in the same spill files without truncating it first, which effectively duplicate the data. Avoid that by removing any leftover reorderbuffer spill files when a walsender starts. Backpatch to 9.4; this bug has been there from the very beginning of logical decoding. Author: Craig Ringer, revised by me Reviewed by: Álvaro Herrera, Petr Jelínek, Masahiko Sawada
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