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7524c78874
Author: Alexey Kondratov Reviewed-by: Paul Guo Discussion: https://postgr.es/m/2f726102-3f1e-bf16-061e-501919473ace@postgrespro.ru
111 lines
2.9 KiB
Perl
111 lines
2.9 KiB
Perl
use strict;
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use warnings;
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use TestLib;
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use Test::More tests => 11;
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use FindBin;
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use lib $FindBin::RealBin;
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use RewindTest;
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sub run_test
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{
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my $test_mode = shift;
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RewindTest::setup_cluster($test_mode);
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RewindTest::start_master();
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# Create a test table and insert a row in master.
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master_psql("CREATE TABLE tbl1 (d text)");
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master_psql("INSERT INTO tbl1 VALUES ('in master')");
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# This test table will be used to test truncation, i.e. the table
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# is extended in the old master after promotion
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master_psql("CREATE TABLE trunc_tbl (d text)");
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master_psql("INSERT INTO trunc_tbl VALUES ('in master')");
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# This test table will be used to test the "copy-tail" case, i.e. the
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# table is truncated in the old master after promotion
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master_psql("CREATE TABLE tail_tbl (id integer, d text)");
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master_psql("INSERT INTO tail_tbl VALUES (0, 'in master')");
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master_psql("CHECKPOINT");
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RewindTest::create_standby($test_mode);
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# Insert additional data on master that will be replicated to standby
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master_psql("INSERT INTO tbl1 values ('in master, before promotion')");
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master_psql(
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"INSERT INTO trunc_tbl values ('in master, before promotion')");
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master_psql(
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"INSERT INTO tail_tbl SELECT g, 'in master, before promotion: ' || g FROM generate_series(1, 10000) g"
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);
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master_psql('CHECKPOINT');
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RewindTest::promote_standby();
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# Insert a row in the old master. This causes the master and standby
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# to have "diverged", it's no longer possible to just apply the
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# standy's logs over master directory - you need to rewind.
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master_psql("INSERT INTO tbl1 VALUES ('in master, after promotion')");
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# Also insert a new row in the standby, which won't be present in the
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# old master.
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standby_psql("INSERT INTO tbl1 VALUES ('in standby, after promotion')");
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# Insert enough rows to trunc_tbl to extend the file. pg_rewind should
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# truncate it back to the old size.
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master_psql(
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"INSERT INTO trunc_tbl SELECT 'in master, after promotion: ' || g FROM generate_series(1, 10000) g"
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);
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# Truncate tail_tbl. pg_rewind should copy back the truncated part
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# (We cannot use an actual TRUNCATE command here, as that creates a
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# whole new relfilenode)
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master_psql("DELETE FROM tail_tbl WHERE id > 10");
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master_psql("VACUUM tail_tbl");
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RewindTest::run_pg_rewind($test_mode);
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check_query(
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'SELECT * FROM tbl1',
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qq(in master
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in master, before promotion
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in standby, after promotion
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),
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'table content');
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check_query(
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'SELECT * FROM trunc_tbl',
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qq(in master
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in master, before promotion
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),
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'truncation');
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check_query(
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'SELECT count(*) FROM tail_tbl',
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qq(10001
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),
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'tail-copy');
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# Permissions on PGDATA should be default
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SKIP:
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{
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skip "unix-style permissions not supported on Windows", 1
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if ($windows_os);
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ok(check_mode_recursive($node_master->data_dir(), 0700, 0600),
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'check PGDATA permissions');
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}
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RewindTest::clean_rewind_test();
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return;
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}
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# Run the test in both modes
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run_test('local');
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run_test('remote');
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exit(0);
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