mirror of
https://git.savannah.gnu.org/git/parallel.git
synced 2024-11-22 05:57:54 +00:00
parallel: --retries implemented. Passes unittest.
This commit is contained in:
Ole Tange
parent
8703e6b5c5
commit
2e572c00c9
|
|
@ -1,3 +1,27 @@
|
|||
== Retry ==
|
||||
|
||||
--retries n
|
||||
If a job fails, retry it on another computer. Do this n times. If there are fewer than n computers in --sshlogin GNU parallel will re-use the computers. This is useful if some jobs fail for no apparent reason (such as network failure).
|
||||
|
||||
When the command dies and fails:
|
||||
Update $Global::failed_command{$test_failed}
|
||||
If max n has been reached for all: fail
|
||||
|
||||
What if all jobs in the queue failed for this sshlogin so only undef is left for this sshlogin?
|
||||
|
||||
BUG: Rækkeflg er forkert.
|
||||
(seq 0 1) | parallel -kj100% -S 1/:,2/parallel@server2 -vq perl -e 'sleep 1;print "job{}\n";exit({})'
|
||||
OK: (seq 0 1) | parallel -kj2 -S 1/:,2/parallel@server2 -vq perl -e 'sleep 1;print "job{}\n";exit({})'
|
||||
Fejlen eksisterer også i 20100906 og 20100822
|
||||
|
||||
perl -e sleep\ 1\;print\ \"job0\\n\"\;exit\(0\)ARRAY(0x965e928)perl -e sleep\ 1\;print\ \"job1\\n\"\;exit\(1\)ARRAY(0x9727bc0)perl -e sleep\ 1\;print\ \"job2\\n\"\;exit\(2\)ARRAY(0x9727a70)Limited to procs: 3
|
||||
Wanted procs: 1
|
||||
Time to fork ten procs: (processes so far: 1)
|
||||
perl -e sleep\ 1\;print\ \"job1\\n\"\;exit\(1\)ARRAY(0x9727bc0)perl -e sleep\ 1\;print\ \"job2\\n\"\;exit\(2\)ARRAY(0x9727a70)perl -e sleep\ 1\;print\ \"job0\\n\"\;exit\(0\)ARRAY(0x965e928)Limited to procs: 1
|
||||
Running jobs on parallel@server2: 0
|
||||
|
||||
== FSCONS ==
|
||||
|
||||
Annoncer foredrag til FSCONS
|
||||
|
||||
I will be at FSCONS 2010-11-07 talking about GNU Parallel.
|
||||
|
|
|
|||
189
src/parallel
189
src/parallel
|
|
@ -552,6 +552,15 @@ default.
|
|||
|
||||
If the stdin (standard input) only contains whitespace, do not run the command.
|
||||
|
||||
|
||||
=item B<--retries> I<n>
|
||||
|
||||
If a job fails, retry it on another computer. Do this I<n> times. If
|
||||
there are fewer than I<n> computers in B<--sshlogin> GNU parallel will
|
||||
re-use the computers. This is useful if some jobs fail for no apparent
|
||||
reason (such as network failure).
|
||||
|
||||
|
||||
=item B<--return> I<filename>
|
||||
|
||||
Transfer files from remote servers. B<--return> is used with
|
||||
|
|
@ -2280,6 +2289,7 @@ sub parse_options {
|
|||
"cleanup" => \$::opt_cleanup,
|
||||
"basefile|B=s" => \@::opt_basefile,
|
||||
"halt-on-error|H=s" => \$::opt_halt_on_error,
|
||||
"retries=i" => \$::opt_retries,
|
||||
"progress" => \$::opt_progress,
|
||||
"eta" => \$::opt_eta,
|
||||
"arg-sep|argsep=s" => \$::opt_arg_sep,
|
||||
|
|
@ -2970,8 +2980,10 @@ sub compute_number_of_processes {
|
|||
my $sshlogin = shift;
|
||||
my $wanted_processes = user_requested_processes($opt_P,$sshlogin);
|
||||
debug("Wanted procs: $wanted_processes\n");
|
||||
debug("unget before:",@Global::unget_next_command_line);
|
||||
my $system_limit =
|
||||
processes_available_by_system_limit($wanted_processes,$sshlogin);
|
||||
debug("unget after:",@Global::unget_next_command_line);
|
||||
debug("Limited to procs: $system_limit\n");
|
||||
return $system_limit;
|
||||
}
|
||||
|
|
@ -3155,7 +3167,7 @@ sub user_requested_processes {
|
|||
# E.g. -P +2
|
||||
my $j = $1;
|
||||
$processes =
|
||||
$j + no_of_processing_units_sshlogin($sshlogin);
|
||||
no_of_processing_units_sshlogin($sshlogin) + $j;
|
||||
} elsif ($opt_P =~ /^-(\d+)$/) {
|
||||
# E.g. -P -2
|
||||
my $j = $1;
|
||||
|
|
@ -3362,6 +3374,8 @@ sub min {
|
|||
my $min = shift;
|
||||
my @args = @_;
|
||||
for my $a (@args) {
|
||||
# Skip undefs
|
||||
defined $a or next;
|
||||
$min = ($min < $a) ? $min : $a;
|
||||
}
|
||||
return $min;
|
||||
|
|
@ -3373,18 +3387,43 @@ sub max {
|
|||
my $max = shift;
|
||||
my @args = @_;
|
||||
for my $a (@args) {
|
||||
# Skip undefs
|
||||
defined $a or next;
|
||||
$max = ($max > $a) ? $max : $a;
|
||||
}
|
||||
return $max;
|
||||
}
|
||||
|
||||
sub sum {
|
||||
# Returns:
|
||||
# Sum of values of array
|
||||
my @args = @_;
|
||||
my $sum = 0;
|
||||
for (@args) {
|
||||
# Skip undefs
|
||||
$_ and do { $sum += $_; }
|
||||
}
|
||||
return $sum;
|
||||
}
|
||||
|
||||
sub undef_as_zero {
|
||||
my $a = shift;
|
||||
return $a ? $a : 0;
|
||||
}
|
||||
|
||||
sub __RUNNING_AND_PRINTING_THE_JOBS__ {}
|
||||
|
||||
# Variable structure:
|
||||
#
|
||||
# $Global::failed{$clean_command}{'count'}{$sshlogin} = number of times failed on this sshlogin
|
||||
# $Global::failed{$clean_command}{'seq'} = original sequence number
|
||||
# $Global::running{$pid}{'seq'} = printsequence
|
||||
# $Global::running{$pid}{sshlogin} = server to run on
|
||||
# $Global::running{$pid}{'exitstatus'} = exit status
|
||||
# $Global::running{$pid}{'out'} = stdout filehandle
|
||||
# $Global::running{$pid}{'err'} = stderr filehandle
|
||||
# $Global::running{$pid}{'command'} = command being run (including rsync/ssh and args)
|
||||
# $Global::running{$pid}{'cleancommand'} = command being run (excluding rsync/ssh but including args)
|
||||
# $Global::host{$sshlogin}{'no_of_running'} = number of currently running jobs
|
||||
# $Global::host{$sshlogin}{'completed'} = number of completed jobs
|
||||
# $Global::host{$sshlogin}{'ncpus'} = number of CPUs (or CPU cores)
|
||||
|
|
@ -3668,12 +3707,13 @@ sub start_another_job {
|
|||
my $sshlogin = shift;
|
||||
# Do we have enough file handles to start another job?
|
||||
if(enough_file_handles()) {
|
||||
my $command = get_command_line_with_sshlogin($sshlogin);
|
||||
my ($command,$clean_command) = get_command_line_with_sshlogin($sshlogin);
|
||||
if(defined $command) {
|
||||
debug("Command to run on '$sshlogin': $command\n");
|
||||
my %jobinfo = start_job($command,$sshlogin);
|
||||
my %jobinfo = start_job($command,$sshlogin,$clean_command);
|
||||
if(%jobinfo) {
|
||||
$Global::running{$jobinfo{"pid"}} = \%jobinfo;
|
||||
debug("Started as seq ".$jobinfo{'seq'},"\n");
|
||||
return 1;
|
||||
} else {
|
||||
# If interactive says: Dont run the job, then skip it and run the next
|
||||
|
|
@ -3698,8 +3738,10 @@ sub start_job {
|
|||
# "err" => STDERR filehandle (if grouped)
|
||||
# "sshlogin" => sshlogin
|
||||
# "command" => command being run
|
||||
# "clean_command" => command being run without wrapping
|
||||
my $command = shift;
|
||||
my $sshlogin = shift;
|
||||
my $clean_command = shift;
|
||||
my ($pid,$out,$err,%out,%err,$outname,$errname,$name);
|
||||
if($Global::grouped) {
|
||||
# To group we create temporary files for STDOUT and STDERR
|
||||
|
|
@ -3738,10 +3780,18 @@ sub start_job {
|
|||
}
|
||||
$Global::total_running++;
|
||||
$Global::total_started++;
|
||||
debug("$Global::total_running processes. Starting: $command\n");
|
||||
#print STDERR "LEN".length($command)."\n";
|
||||
$Private::job_start_sequence++;
|
||||
if(@::opt_a and $Private::job_start_sequence == 1) {
|
||||
my $job_start_sequence;
|
||||
if($Global::failed{$clean_command}{'seq'}) {
|
||||
# This is a retried job: Keep the old seq
|
||||
$job_start_sequence = $Global::failed{$clean_command}{'seq'};
|
||||
} else {
|
||||
# This is a new (non-retried) job: Give it a new seq
|
||||
$Private::job_start_sequence++;
|
||||
$job_start_sequence = $Private::job_start_sequence;
|
||||
}
|
||||
debug("$Global::total_running processes. Starting ($job_start_sequence): $command\n");
|
||||
if(@::opt_a and $job_start_sequence == 1) {
|
||||
# Give STDIN to the first job if using -a
|
||||
$pid = open3("<&STDIN", ">&STDOUT", ">&STDERR", $command) ||
|
||||
die("open3 (with -a) failed. Report a bug to <bug-parallel\@gnu.org>\n");
|
||||
|
|
@ -3766,17 +3816,19 @@ sub start_job {
|
|||
or die "Can't dup \$Global::original_stderr: $!";
|
||||
|
||||
if($Global::grouped) {
|
||||
return ("seq" => $Private::job_start_sequence,
|
||||
return ("seq" => $job_start_sequence,
|
||||
"pid" => $pid,
|
||||
"out" => $out{$outname},
|
||||
"err" => $err{$errname},
|
||||
"sshlogin" => $sshlogin,
|
||||
"command" => $command);
|
||||
"command" => $command,
|
||||
"clean_command" => $clean_command);
|
||||
} else {
|
||||
return ("seq" => $Private::job_start_sequence,
|
||||
return ("seq" => $job_start_sequence,
|
||||
"pid" => $pid,
|
||||
"sshlogin" => $sshlogin,
|
||||
"command" => $command);
|
||||
"command" => $command,
|
||||
"clean_command" => $clean_command);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -3823,8 +3875,29 @@ sub __READING_AND_QUOTING_ARGUMENTS__ {}
|
|||
sub get_command_line_with_sshlogin {
|
||||
# Returns:
|
||||
# next command to run with ssh command wrapping if remote
|
||||
# next command to run with no wrapping (clean_command)
|
||||
my $sshlogin = shift;
|
||||
my ($next_command_line, $args_ref) = get_command_line();
|
||||
my ($clean_command) = $next_command_line;
|
||||
if($::opt_retries and $clean_command and
|
||||
$Global::failed{$clean_command}{'count'}{$sshlogin}) {
|
||||
# This command with these args failed for this sshlogin
|
||||
my $min_failures =
|
||||
min(map { $Global::failed{$clean_command}{'count'}{$_} }
|
||||
keys %Global::host);
|
||||
if($Global::failed{$clean_command}{'count'}{$sshlogin} == $min_failures) {
|
||||
# It failed the same or more times on another host:
|
||||
# run it on this host
|
||||
} else {
|
||||
# If it failed fewer times on another host:
|
||||
# Find another job to run
|
||||
my @next_job_to_run = get_command_line_with_sshlogin($sshlogin);
|
||||
# Push the command back on the queue
|
||||
unget_command_line($next_command_line,$args_ref);
|
||||
return @next_job_to_run;
|
||||
}
|
||||
}
|
||||
|
||||
my ($sshcmd,$serverlogin) = sshcommand_of_sshlogin($sshlogin);
|
||||
my ($pre,$post)=("","");
|
||||
if($next_command_line and $serverlogin ne ":") {
|
||||
|
|
@ -3847,9 +3920,9 @@ sub get_command_line_with_sshlogin {
|
|||
$post = '_EXIT_status=$?; '.$post.' exit $_EXIT_status;';
|
||||
}
|
||||
return ($pre . "$sshcmd $serverlogin "
|
||||
.shell_quote($next_command_line).";".$post);
|
||||
.shell_quote($next_command_line).";".$post,$clean_command);
|
||||
} else {
|
||||
return $next_command_line;
|
||||
return ($next_command_line,$clean_command);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -4302,39 +4375,69 @@ sub reaper {
|
|||
# The process that died had the tty => release it
|
||||
$Global::tty_taken = 0;
|
||||
}
|
||||
# Force printing now if the job failed and we are going to exit
|
||||
my $print_now = ($Global::running{$stiff}{'exitstatus'} and
|
||||
$::opt_halt_on_error and $::opt_halt_on_error == 2);
|
||||
if($Global::keeporder and not $print_now) {
|
||||
$Global::print_later{$Global::running{$stiff}{"seq"}} =
|
||||
$Global::running{$stiff};
|
||||
$Private::job_end_sequence ||= 1;
|
||||
while($Global::print_later{$Private::job_end_sequence}) {
|
||||
debug("Found job end $Private::job_end_sequence");
|
||||
print_job($Global::print_later{$Private::job_end_sequence});
|
||||
delete $Global::print_later{$Private::job_end_sequence};
|
||||
$Private::job_end_sequence++;
|
||||
my $retry_job = 0;
|
||||
if ($::opt_retries) {
|
||||
my $clean_command = $Global::running{$stiff}{'clean_command'};
|
||||
my $sshlogin = $Global::running{$stiff}{'sshlogin'};
|
||||
if(not $Global::running{$stiff}{'exitstatus'}) {
|
||||
# Completed with success. If there is a recorded failure: forget it
|
||||
delete $Global::failed{$clean_command};
|
||||
} else {
|
||||
# The job failed. Should it be retried?
|
||||
$Global::failed{$clean_command}{'count'}{$sshlogin}++;
|
||||
$Global::failed{$clean_command}{'seq'} = $Global::running{$stiff}{'seq'};
|
||||
my $total_failures =
|
||||
sum(map { $Global::failed{$clean_command}{'count'}{$_} }
|
||||
keys %Global::host);
|
||||
if($total_failures == $::opt_retries) {
|
||||
# This has been retried enough
|
||||
$retry_job = 0;
|
||||
delete $Global::failed{$clean_command};
|
||||
} else {
|
||||
# This command should be retried
|
||||
unget_command_line($clean_command,[]);
|
||||
$retry_job = 1;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
print_job ($Global::running{$stiff});
|
||||
}
|
||||
if($Global::running{$stiff}{'exitstatus'}) {
|
||||
# The jobs had a exit status <> 0, so error
|
||||
$Global::exitstatus++;
|
||||
if($::opt_halt_on_error) {
|
||||
if($::opt_halt_on_error == 1) {
|
||||
# If halt on error == 1 we should gracefully exit
|
||||
print STDERR ("$Global::progname: Starting no more jobs. ",
|
||||
"Waiting for ", scalar(keys %Global::running),
|
||||
" jobs to finish. This job failed:\n",
|
||||
$Global::running{$stiff}{"command"},"\n");
|
||||
$Global::start_no_new_jobs++;
|
||||
$Global::halt_on_error_exitstatus = $Global::running{$stiff}{'exitstatus'};
|
||||
} elsif($::opt_halt_on_error == 2) {
|
||||
# If halt on error == 2 we should exit immediately
|
||||
print STDERR ("$Global::progname: This job failed:\n",
|
||||
$Global::running{$stiff}{"command"},"\n");
|
||||
exit ($Global::running{$stiff}{'exitstatus'});
|
||||
|
||||
if(not $retry_job) {
|
||||
# Force printing now if the job failed and we are going to exit
|
||||
my $print_now = ($Global::running{$stiff}{'exitstatus'} and
|
||||
$::opt_halt_on_error and $::opt_halt_on_error == 2);
|
||||
if($Global::keeporder and not $print_now) {
|
||||
$Private::print_later{$Global::running{$stiff}{"seq"}} =
|
||||
$Global::running{$stiff};
|
||||
$Private::job_end_sequence ||= 1;
|
||||
debug("Looking for: $Private::job_end_sequence ".
|
||||
"Current: ".$Global::running{$stiff}{"seq"}."\n");
|
||||
while($Private::print_later{$Private::job_end_sequence}) {
|
||||
debug("Found job end $Private::job_end_sequence");
|
||||
print_job($Private::print_later{$Private::job_end_sequence});
|
||||
delete $Private::print_later{$Private::job_end_sequence};
|
||||
$Private::job_end_sequence++;
|
||||
}
|
||||
} else {
|
||||
print_job ($Global::running{$stiff});
|
||||
}
|
||||
if($Global::running{$stiff}{'exitstatus'}) {
|
||||
# The jobs had a exit status <> 0, so error
|
||||
$Global::exitstatus++;
|
||||
if($::opt_halt_on_error) {
|
||||
if($::opt_halt_on_error == 1) {
|
||||
# If halt on error == 1 we should gracefully exit
|
||||
print STDERR ("$Global::progname: Starting no more jobs. ",
|
||||
"Waiting for ", scalar(keys %Global::running),
|
||||
" jobs to finish. This job failed:\n",
|
||||
$Global::running{$stiff}{"command"},"\n");
|
||||
$Global::start_no_new_jobs++;
|
||||
$Global::halt_on_error_exitstatus = $Global::running{$stiff}{'exitstatus'};
|
||||
} elsif($::opt_halt_on_error == 2) {
|
||||
# If halt on error == 2 we should exit immediately
|
||||
print STDERR ("$Global::progname: This job failed:\n",
|
||||
$Global::running{$stiff}{"command"},"\n");
|
||||
exit ($Global::running{$stiff}{'exitstatus'});
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue