From 0bca79e24d4979a1f0548b4ceadf4e31bb434324 Mon Sep 17 00:00:00 2001
From: xueyi <rogers.ww@alibaba-inc.com>
Date: Mon, 10 Jul 2023 07:09:43 +0000
Subject: [PATCH 1/3] Add test case: data lost after restart

---
 .../t/000_truncate_file_before_start_up.pl    | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 src/test/recovery/t/000_truncate_file_before_start_up.pl

diff --git a/src/test/recovery/t/000_truncate_file_before_start_up.pl b/src/test/recovery/t/000_truncate_file_before_start_up.pl
new file mode 100644
index 0000000000..a018a35b66
--- /dev/null
+++ b/src/test/recovery/t/000_truncate_file_before_start_up.pl
@@ -0,0 +1,62 @@
+use strict;
+use warnings;
+use PostgreSQL::Test::Utils;
+use PostgreSQL::Test::Cluster;
+use Test::More;
+use Test::More tests => 4;
+
+my $sql_dir    = $ENV{PWD} . '/sql';
+my $regress_db = 'postgres';
+
+my $node_primary = PostgreSQL::Test::Cluster->new('primary');
+$node_primary->init(allows_streaming => 1);
+
+$node_primary->append_conf('postgresql.conf', 'synchronous_commit=on');
+$node_primary->append_conf('postgresql.conf', 'full_page_writes=off');
+$node_primary->append_conf('postgresql.conf', 'log_min_messages=debug2');
+
+$node_primary->start;
+
+# create one table and insert some data
+$node_primary->safe_psql(
+	$regress_db,
+	q(create table test (id int, name char(128) default 'A');insert into test select generate_series(1,64);));
+
+# do one checkpoint to flush all the data and wal
+$node_primary->safe_psql($regress_db, q(checkpoint;));
+
+# insert more data
+$node_primary->safe_psql(
+	$regress_db,
+	q(insert into test values (65);));
+
+# check count(*) of table test
+my $result = $node_primary->safe_psql($regress_db, q(select count(*) from test;));
+is($result, '65', 'count of table test check before restart');
+
+# get the file path of test
+my $file_path = $node_primary->safe_psql($regress_db, q(select pg_relation_filepath('test');));
+$file_path =~ s/^\s+|\s+$//g;
+print "rel file path is $file_path\n";
+
+# immediate stop primary
+$node_primary->stop('i');
+
+# truncate file to 8192
+system_or_bail('truncate', '-s', '8192', $node_primary->data_dir . '/' . $file_path);
+
+my $log_location = -s $node_primary->logfile;
+# start
+$node_primary->start;
+
+$node_primary->log_check('find invalid page for rel file path', $log_location,
+						 log_like => [qr/page [0-9]+ of relation $file_path does not exist/]);
+
+$node_primary->log_check('find dropped invalid page for rel file path', $log_location,
+						 log_like => [qr/page [0-9]+ of relation $file_path has been dropped/]);
+
+# check count(*) of table test again
+$result = $node_primary->safe_psql($regress_db, q(select count(*) from test;));
+is($result, '64', 'count of table test check after restart');
+
+$node_primary->stop();
-- 
2.19.1.6.gb485710b