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Rename new TableChecksum to RowChecksum and revert TableChecksum to r108. This will avoid completely break TableSync*.pm and pt-table-sync.

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This commit is contained in:
Daniel Nichter
2011-09-10 13:46:55 -06:00
parent 968d10ac37
commit 84f7c47ff4
6 changed files with 1716 additions and 482 deletions
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30
lib/NibbleIterator.pm
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@@ -59,17 +59,16 @@ sub new {
# Make SQL statements, prepared on first call to next(). FROM and
# ORDER BY are the same for all statements. FORCE IDNEX and ORDER BY
# are needed to ensure deterministic nibbling.
my $from = " FROM " . $q->quote(@{$tbl}{qw(db tbl)})
. " FORCE INDEX(`$index`)";
my $order_by = "ORDER BY " . join(', ', map {$q->quote($_)} @{$index_cols});
my $from = $q->quote(@{$tbl}{qw(db tbl)}) . " FORCE INDEX(`$index`)";
my $order_by = join(', ', map {$q->quote($_)} @{$index_cols});
# These statements are only executed once, so they don't use sths.
my $first_lb_sql
= "SELECT /*!40001 SQL_NO_CACHE */ "
. join(', ', map { $q->quote($_) } @{$index_cols})
. " $from "
. " FROM $from "
. ($args{where} ? " WHERE $args{where}" : '')
. " $order_by "
. " ORDER BY $order_by "
. " LIMIT 1"
. " /*first lower boundary*/";
MKDEBUG && _d('First lower boundary statement:', $first_lb_sql);
@@ -77,9 +76,9 @@ sub new {
my $last_ub_sql
= "SELECT /*!40001 SQL_NO_CACHE */ "
. join(', ', map { $q->quote($_) } @{$index_cols})
. " $from "
. " FROM $from "
. ($args{where} ? " WHERE $args{where}" : '')
. " $order_by DESC "
. " ORDER BY $order_by DESC "
. " LIMIT 1"
. " /*last upper boundary*/";
MKDEBUG && _d('Last upper boundary statement:', $last_ub_sql);
@@ -95,10 +94,10 @@ sub new {
my $ub_sql
= "SELECT /*!40001 SQL_NO_CACHE */ "
. join(', ', map { $q->quote($_) } @{$index_cols})
. " $from "
. " FROM $from "
. " WHERE " . $asc->{boundaries}->{'>='} # lower boundary
. ($args{where} ? " AND ($args{where})" : '')
. " $order_by "
. " ORDER BY $order_by "
. " LIMIT 2 OFFSET " . (($o->get('chunk-size') || 1) - 1)
. " /*upper boundary*/";
MKDEBUG && _d('Next upper boundary statement:', $ub_sql);
@@ -107,22 +106,23 @@ sub new {
= "SELECT "
. ($args{select} ? $args{select}
: join(', ', map { $q->quote($_) } @{$asc->{cols}}))
. " $from "
. " FROM $from "
. " WHERE " . $asc->{boundaries}->{'>='} # lower boundary
. " AND " . $asc->{boundaries}->{'<='} # upper boundary
. ($args{where} ? " AND ($args{where})" : '')
. " $order_by"
. " ORDER BY $order_by"
. " /*nibble*/";
MKDEBUG && _d('Nibble statement:', $nibble_sql);
# If the chunk size is >= number of rows in table, then we don't
# need to chunk; we can just select all rows, in order, at once.
my $one_nibble_sql
= "SELECT /*!40001 SQL_NO_CACHE */ "
. join(', ', map { $q->quote($_) } @{$asc->{cols}})
. " $from "
= "SELECT "
. ($args{select} ? $args{select}
: join(', ', map { $q->quote($_) } @{$asc->{cols}}))
. " FROM $from "
. ($args{where} ? " AND ($args{where})" : '')
. " $order_by"
. " ORDER BY $order_by"
. " /*one nibble*/";
MKDEBUG && _d('One nibble statement:', $one_nibble_sql);