percona/percona-toolkit
1
0
Fork 0
mirror of https://github.com/percona/percona-toolkit.git synced 2025-12-20 01:04:40 +08:00
Code Issues Packages Projects Releases Wiki Activity

Percona XtraDB support for pt-table-checksum.

Browse Source
This commit is contained in:
Daniel Nichter
2012-08-29 17:03:50 -06:00
parent 8bf3979ed4 1a895cb0e0
commit e5a7db8ea2
2 changed files with 62 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
bin/pt-table-checksum
View File

@@ -2987,6 +2987,7 @@ sub new {
dbh_set => 0,
OptionParser => $o,
DSNParser => $dp,
is_cluster_node => undef,
};
return bless $self, $class;
@@ -3056,6 +3057,19 @@ sub name {
return $self->{hostname} || $self->{dsn_name} || 'unknown host';
}
sub is_cluster_node {
my ($self) = @_;
return $self->{is_cluster_node} if defined $self->{is_cluster_node};
my $sql = "SHOW VARIABLES LIKE 'wsrep_on'";
PTDEBUG && _d($sql);
my $row = $self->{dbh}->selectrow_arrayref($sql);
PTDEBUG && _d(defined $row ? @$row : 'undef');
$self->{is_cluster_node} = $row && $row->[0] ? 1 : 0;
return $self->{is_cluster_node};
}
sub DESTROY {
my ($self) = @_;
if ( $self->{dbh}
@@ -8295,6 +8309,12 @@ sub main {
);
PTDEBUG && _d(scalar @$slaves, 'slaves found');
if ( $master_cxn->is_cluster_node() && !@$slaves ) {
die $master_cxn->name() . " is a cluster node but no other nodes "
. "or regular replicas were found. Use --recursion-method=dsn "
. "to specify the other nodes in the cluster.\n";
}
if ( $o->get('check-slave-lag') ) {
PTDEBUG && _d('Will use --check-slave-lag to check for slave lag');
my $cxn = $make_cxn->(
@@ -8308,6 +8328,23 @@ sub main {
$slave_lag_cxns = $slaves;
}
# Cluster nodes aren't slaves, so SHOW SLAVE STATUS doesn't work.
# Nodes shouldn't be out of sync anyway because the cluster is
# (virtually) synchronous, so waiting for the last checksum chunk
# to appear should be sufficient.
@$slave_lag_cxns = grep {
my $slave_cxn = $_;
if ( $slave_cxn->is_cluster_node() ) {
warn "Not checking replica lag on " . $slave_cxn->name()
. " because it is a cluster node.\n";
0;
}
else {
PTDEBUG && _d('Will check slave lag on', $slave_cxn->name());
$slave_cxn;
}
} @$slave_lag_cxns;
# #####################################################################
# Possibly check replication slaves and exit.
# #####################################################################
@@ -8510,7 +8547,9 @@ sub main {
my $checksum_dml = "REPLACE INTO $repl_table "
. "(db, tbl, chunk, chunk_index,"
. " lower_boundary, upper_boundary, this_cnt, this_crc) "
. "SELECT ?, ?, ?, ?, ?, ?,";
. "SELECT"
. ($master_cxn->is_cluster_node() ? ' /*!99997*/' : '')
. " ?, ?, ?, ?, ?, ?,";
my $past_cols = " COUNT(*), '0'";
# ########################################################################
@@ -11003,6 +11042,14 @@ replicas do not honor this change. Therefore, checksums will not replicate
past any replicas using row-based replication that are masters for
further replicas. (L<Bug 899415|https://bugs.launchpad.net/percona-toolkit/+bug/899415>)
=item Percona XtraDB Cluster
pt-table-checksum works with Percona XtraDB Cluster 5.5.27-23.6 and newer.
The C<dsn> method for L<"--recursion-method"> must be used to specify cluster
nodes and regular replicas because nodes are not regular replicas so they
cannot be detected automatically. The lag check (see L<"REPLICA CHECKS">)
is not performed for cluster nodes.
=back
=head1 BUGS

14
lib/Cxn.pm
View File

@@ -107,6 +107,7 @@ sub new {
dbh_set => 0,
OptionParser => $o,
DSNParser => $dp,
is_cluster_node => undef,
};
return bless $self, $class;
@@ -194,6 +195,19 @@ sub name {
return $self->{hostname} || $self->{dsn_name} || 'unknown host';
}
sub is_cluster_node {
my ($self) = @_;
return $self->{is_cluster_node} if defined $self->{is_cluster_node};
my $sql = "SHOW VARIABLES LIKE 'wsrep_on'";
PTDEBUG && _d($sql);
my $row = $self->{dbh}->selectrow_arrayref($sql);
PTDEBUG && _d(defined $row ? @$row : 'undef');
$self->{is_cluster_node} = $row && $row->[0] ? 1 : 0;
return $self->{is_cluster_node};
}
sub DESTROY {
my ($self) = @_;
if ( $self->{dbh}