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-rw-r--r--src/bin/pg_dump/pg_dump.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index 6295b5bf2cc..9f1ef32b158 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -606,6 +606,24 @@ main(int argc, char **argv)
no_security_labels = 1;
/*
+ * When running against 9.0 or later, check if we are in recovery mode,
+ * which means we are on a hot standby.
+ */
+ if (fout->remoteVersion >= 90000)
+ {
+ PGresult *res = ExecuteSqlQueryForSingleRow(fout, "SELECT pg_catalog.pg_is_in_recovery()");
+ if (strcmp(PQgetvalue(res, 0, 0), "t") == 0)
+ {
+ /*
+ * On hot standby slaves, never try to dump unlogged table data,
+ * since it will just throw an error.
+ */
+ no_unlogged_table_data = true;
+ }
+ PQclear(res);
+ }
+
+ /*
* Start transaction-snapshot mode transaction to dump consistent data.
*/
ExecuteSqlStatement(fout, "BEGIN");