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row0ins.c:

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Fix an assertion failure in row0ins.c line 511 in case of a cascading delete caused by circularly referencing rows, when foreign keys are used
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heikki@hundin.mysql.fi
2002-05-02 11:12:49 +03:00
parent 0b6a786540
commit 9e51d1a5ee
1 changed files with 8 additions and 4 deletions
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12
innobase/row/row0ins.c
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@@ -456,7 +456,8 @@ row_ins_foreign_delete_or_set_null(
} }
if (!page_rec_is_user_rec(clust_rec)) { if (!page_rec_is_user_rec(clust_rec)) {
fprintf(stderr, "InnoDB: error in cascade of a foreign key op\n" fprintf(stderr,
"InnoDB: error in cascade of a foreign key op\n"
"InnoDB: index %s table %s\n", index->name, "InnoDB: index %s table %s\n", index->name,
index->table->name); index->table->name);
@@ -490,9 +491,10 @@ row_ins_foreign_delete_or_set_null(
} }
if (rec_get_deleted_flag(clust_rec)) { if (rec_get_deleted_flag(clust_rec)) {
/* This should never happen since we already have an S-lock /* This can happen if there is a circular reference of
on non-delete-marked clust_rec or secondary index record! */ rows such that cascading delete comes to delete a row
already in the process of being delete marked */
/*
fprintf(stderr, fprintf(stderr,
"InnoDB: error 2 in cascade of a foreign key op\n" "InnoDB: error 2 in cascade of a foreign key op\n"
"InnoDB: index %s table %s\n", index->name, "InnoDB: index %s table %s\n", index->name,
@@ -509,6 +511,8 @@ row_ins_foreign_delete_or_set_null(
fprintf(stderr, "InnoDB: to mysql@lists.mysql.com\n"); fprintf(stderr, "InnoDB: to mysql@lists.mysql.com\n");
ut_a(0); ut_a(0);
*/
err = DB_SUCCESS;
goto nonstandard_exit_func; goto nonstandard_exit_func;
} }