Perl根据计数将散列分成相等的部分,并发送以进行并行执行
我有一个散列(Perl根据计数将散列分成相等的部分,并发送以进行并行执行,perl,hash,parallel-processing,fork,Perl,Hash,Parallel Processing,Fork,我有一个散列(%hash),其中包含节点列表和需要为各个节点执行的命令 在此之前,我有一个主机列表(@alive\u hosts)它应该在哪个主机上执行 这是我的密码: #!/usr/bin/perl use strict; use warnings; use Data::Dumper; my @alive_hosts = qw/10.0.0.1 10.0.0.2/; print Dumper(\@alive_hosts); my %hash = ( 'Node1'
%hash
),其中包含节点列表和需要为各个节点执行的命令
在此之前,我有一个主机列表(@alive\u hosts
)它应该在哪个主机上执行
这是我的密码:
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
my @alive_hosts = qw/10.0.0.1 10.0.0.2/;
print Dumper(\@alive_hosts);
my %hash = (
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4',
);
print Dumper(\%hash);
my $num_buckets = scalar @alive_hosts;
print "num_buckets:$num_buckets\n";
my $no_of_nodes = scalar keys %hash;
my $per_bucket = int( $no_of_nodes / $num_buckets );
print "per_bucket:$per_bucket\n";
my $num_extras = $no_of_nodes % $num_buckets;
print "num_extras:$num_extras\n";
我想将这个散列(%hash
)进行分割,以便根据活动主机的数量对散列进行分割。以便将其分发到每个主机。
在上面的例子中,
主机1(10.0.0.1
)应包含:
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1'
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4'
主机2(10.0.0.2
)应包含:
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1'
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4'
以上2个值可以保存在新的哈希中,从那里我需要执行一个shell脚本,将上述值(即Node和cmds)作为参数并行传递。为了并行执行,我想使用
Parallel::Loops
或Parallel::ForkManager
。任何想法/建议都将不胜感激。您已经计算出每个新哈希中需要多少节点。因此,您可以从大散列中获得一个键列表,并在循环的每一次循环中,只需slice()
大概是这样的:
#!/usr/bin/perl
use strict;
use warnings;
use 5.20; # For the new hash slices
use feature 'say';
use Data::Dumper;
my @alive_hosts = qw/10.0.0.1 10.0.0.2/;
print Dumper(\@alive_hosts);
my %hash = (
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4',
);
print Dumper(\%hash);
my $no_of_nodes = scalar keys %hash;
my $num_buckets = scalar @alive_hosts;
my $per_bucket = int( $no_of_nodes / $num_buckets );
$per_bucket++ if $no_of_nodes % $num_buckets;
my @keys = keys %hash;
my %node_hash;
for (1 .. $num_buckets) {
my @newkeys = splice @keys, 0, $per_bucket;
$node_hash{$alive_hosts[$_ - 1]} = { %hash{@newkeys} }; # New hash slice syntax
}
say Dumper \%node_hash;
注意:我使用新的(ish)(从Perl 5.20开始)%hash{…}
哈希片语法。如果您使用的是早期版本的Perl,则需要调整该行。您已经计算出每个新哈希中需要多少节点。因此,您可以从大散列中获得一个键列表,并在循环的每一次循环中,只需slice()
大概是这样的:
#!/usr/bin/perl
use strict;
use warnings;
use 5.20; # For the new hash slices
use feature 'say';
use Data::Dumper;
my @alive_hosts = qw/10.0.0.1 10.0.0.2/;
print Dumper(\@alive_hosts);
my %hash = (
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4',
);
print Dumper(\%hash);
my $no_of_nodes = scalar keys %hash;
my $num_buckets = scalar @alive_hosts;
my $per_bucket = int( $no_of_nodes / $num_buckets );
$per_bucket++ if $no_of_nodes % $num_buckets;
my @keys = keys %hash;
my %node_hash;
for (1 .. $num_buckets) {
my @newkeys = splice @keys, 0, $per_bucket;
$node_hash{$alive_hosts[$_ - 1]} = { %hash{@newkeys} }; # New hash slice syntax
}
say Dumper \%node_hash;
注意:我使用新的(ish)(从Perl 5.20开始)%hash{…}
哈希片语法。如果您使用的是早期版本的Perl,则需要调整该行。查看是否可以接受下一种方法
use strict;
use warnings;
use feature 'say';
use Data::Dumper;
my @alive_hosts = qw/10.0.0.1 10.0.0.2/;
print Dumper(\@alive_hosts);
my %hash = (
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4',
);
print Dumper(\%hash);
my %dispatch;
my @hosts;
while( my($node,$cmd) = each %hash ) {
@hosts = @alive_hosts unless @hosts;
my $host = shift @hosts;
$dispatch{$host}{$node} = $cmd;
}
say Dumper(\%dispatch);
输出
$VAR1 = [
'10.0.0.1',
'10.0.0.2'
];
$VAR1 = {
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node4' => 'cmd1',
'Node6' => 'cmd1 | cmd2',
'Node5' => 'cmd2',
'Node3' => 'cmd4 | cmd1',
'Node7' => 'cmd3 | cmd4',
'Node2' => 'cmd2 | cmd3'
};
$VAR1 = {
'10.0.0.1' => {
'Node6' => 'cmd1 | cmd2',
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node2' => 'cmd2 | cmd3'
},
'10.0.0.2' => {
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node7' => 'cmd3 | cmd4'
}
};
看看你是否发现下一个方法是可以接受的
use strict;
use warnings;
use feature 'say';
use Data::Dumper;
my @alive_hosts = qw/10.0.0.1 10.0.0.2/;
print Dumper(\@alive_hosts);
my %hash = (
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node2' => 'cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node6' => 'cmd1 | cmd2',
'Node7' => 'cmd3 | cmd4',
);
print Dumper(\%hash);
my %dispatch;
my @hosts;
while( my($node,$cmd) = each %hash ) {
@hosts = @alive_hosts unless @hosts;
my $host = shift @hosts;
$dispatch{$host}{$node} = $cmd;
}
say Dumper(\%dispatch);
输出
$VAR1 = [
'10.0.0.1',
'10.0.0.2'
];
$VAR1 = {
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node4' => 'cmd1',
'Node6' => 'cmd1 | cmd2',
'Node5' => 'cmd2',
'Node3' => 'cmd4 | cmd1',
'Node7' => 'cmd3 | cmd4',
'Node2' => 'cmd2 | cmd3'
};
$VAR1 = {
'10.0.0.1' => {
'Node6' => 'cmd1 | cmd2',
'Node1' => 'cmd1 | cmd2 | cmd3',
'Node3' => 'cmd4 | cmd1',
'Node2' => 'cmd2 | cmd3'
},
'10.0.0.2' => {
'Node4' => 'cmd1',
'Node5' => 'cmd2',
'Node7' => 'cmd3 | cmd4'
}
};
谢谢@dave。这解决了创建新哈希的问题。我已经更新了如何在并行处理中执行此值的问题。@vinodk89:如果您还有其他问题,请不要将其添加到此处-在网站上发布新问题。谢谢@dave。这解决了创建新哈希的问题。我已经更新了如何在并行处理中执行此值的问题。@vinodk89:如果您还有其他问题,请不要只在此处添加,请在网站上发布新问题。