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Use just RAND() instead of RAND() + NOW() to avoid be coerced to an int and therefore not sub-second safe.

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This commit is contained in:
Daniel Nichter
2012-06-06 13:52:17 -07:00
parent a178bb32f8
commit f4b3bdb88b
2 changed files with 2 additions and 2 deletions
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2
lib/Sandbox.pm
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@@ -315,7 +315,7 @@ sub wait_for_slaves {
my $self = shift; my $self = shift;
my $master_dbh = $self->get_dbh_for('master'); my $master_dbh = $self->get_dbh_for('master');
my $slave2_dbh = $self->get_dbh_for('slave2'); my $slave2_dbh = $self->get_dbh_for('slave2');
my ($ping) = $master_dbh->selectrow_array("SELECT MD5(RAND() + NOW())"); my ($ping) = $master_dbh->selectrow_array("SELECT MD5(RAND())");
$master_dbh->do("UPDATE percona_test.sentinel SET ping='$ping' WHERE id=1"); $master_dbh->do("UPDATE percona_test.sentinel SET ping='$ping' WHERE id=1");
PerconaTest::wait_until( PerconaTest::wait_until(
sub { sub {

2
sandbox/test-env
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@@ -291,7 +291,7 @@ case $opt in
echo "OK" echo "OK"
fi fi
../util/checksum-test-dataset ../util/checksum-test-dataset
ping=$(/tmp/12345/use -ss -e "SELECT MD5(RAND() + NOW())") ping=$(/tmp/12345/use -ss -e "SELECT MD5(RAND())")
/tmp/12345/use -e "create table percona_test.sentinel(id int primary key, ping varchar(64) not null default '')" /tmp/12345/use -e "create table percona_test.sentinel(id int primary key, ping varchar(64) not null default '')"
/tmp/12345/use -e "insert into percona_test.sentinel(id, ping) values(1, '$ping')"; /tmp/12345/use -e "insert into percona_test.sentinel(id, ping) values(1, '$ping')";
echo -n "Waiting for replication to finish..." echo -n "Waiting for replication to finish..."