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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/brin.sgml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/src/sgml/brin.sgml b/doc/src/sgml/brin.sgml index 23c0e05ed6c..f02e061bc1c 100644 --- a/doc/src/sgml/brin.sgml +++ b/doc/src/sgml/brin.sgml @@ -86,6 +86,18 @@ representation because the existing values have changed. </para> + <para> + When autosummarization is enabled, each time a page range is filled a + request is sent to autovacuum for it to execute a targeted summarization + for that range, to be fulfilled at the end of the next worker run on the + same database. If the request queue is full, the request is not recorded + and a message is sent to the server log: +<screen> +LOG: request for BRIN range summarization for index "brin_wi_idx" page 128 was not recorded +</screen> + When this happens, the range will be summarized normally during the next + regular vacuum of the table. + </para> </sect2> </sect1> |