task.attempt variable question

[biowang]

hi,

=============================
my code
=============================
process abc{


    memory { 2.GB * task.attempt }
    time { 1.hour * task.attempt }

    errorStrategy { task.exitStatus == 140 ? 'retry' : 'terminate' }
    maxRetries 10
    maxErrors 40


    """
    echo ${task.attempt}
    echo ${task.memory}
    echo ${task.time}
    exit 140
    """
}


=============================
the message printed
=============================
N E X T F L O W  ~  version 0.20.0
Launching a.nf
[warm up] executor > local
[5b/ce026b] Submitted process > abc (1)
[6d/43c30b] Re-submitted process > abc (1)
[65/ad76ab] Re-submitted process > abc (1)
[1b/8545a8] Re-submitted process > abc (1)
[c3/712d8e] Re-submitted process > abc (1)
[9e/1a5511] Re-submitted process > abc (1)
[4a/891464] Re-submitted process > abc (1)
[09/48cc92] Re-submitted process > abc (1)
[5c/d86846] Re-submitted process > abc (1)
[2b/fcff44] Re-submitted process > abc (1)
[b9/1b2ae1] Re-submitted process > abc (1)
Error executing process > 'abc (1)'

Caused by:
  Process 'abc (1)' terminated with an error exit status

Command executed:

  echo 1
  echo 2 GB
  echo 1h
  exit 140

Command exit status:
  140

Command output:
  1
  2 GB
  1h

Work dir:
  /tmp/work/b9/1b2ae1167742445c47b82e41e9a364

Tip: you can replicate the issue by changing to the process work dir and entering the command: 'bash .command.run'


=============================
my question
=============================
why the variable task.attempt did`t increased to 10.
and at the same time the Command executed not be

  echo 10
  echo 20 GB
  echo 10h
  exit 140











thank you very much

[Paolo Di Tommaso]

Hi,

Because the script is not re-evaluated, but submitted as it is. Thus the updated values are not visible in the script.

I need to add this in the doc.

Cheers, Paolo

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[Paolo Di Tommaso]

I mean, when a task is re-submitted due to a failure the variable in the script are not re-evaluated in order that you are re-executing the identical job. 

Thus you won't see the new value for `task.attempt`. That variable is meant to be used in the directive definition in order to increase dynamically the resource requirements. 

Hope it helps. 

Cheers,

Paolo

On Wed, Jun 22, 2016 at 9:40 AM, biowang <wanglia...@163.com> wrote:

what is a re-evaluated script?

在 2016年6月22日星期三 UTC+8下午3:07:42，Paolo Di Tommaso写道：