Throw a read error and not a generic error when an LHE read fails

[PerilousApricot]

Hello,

Not sure how to get this submitted for all the different versions of CMSSW (manually?), but I guess it should be eventually.

When LHE reads fail (which happens a decent bit with xrootd), a generic CMSSW exception is thrown, which causes problems with the job retry mechanism of CRAB3. This fix throws a read error instead, which is on the whitelist of acceptable-to-retry errors.

Thanks!

@bbockelm

[cmsbuild]

A new Pull Request was created by @PerilousApricot (Andrew Melo) for CMSSW_5_3_X.

Throw a read error and not a generic error when an LHE read fails

It involves the following packages:

GeneratorInterface/LHEInterface

@vciulli, @nclopezo, @thuer, @cmsbuild, @bendavid, @Degano can you please review it and eventually sign? Thanks.
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@smuzaffar you are the release manager for this.
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[vciulli]

@PerilousApricot: to submit it to different CMSSW version you can easily cherry-pick this commit in a different release
cmsrel CMSSW_whatever
cd CMSSW_whatever/src
cmsenv
git fetch my-cmssw lhe_read_error
git cherry-pick 055e066
git checkout -b lhe_read_error_whatever
git push my-cmsse lhe_read_error_whatever

then proceed as usual with the pull request

[vciulli]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_5_3_X IBs unless changes or unless it breaks tests. @smuzaffar can you please take care of it?

[davidlange6]

+1

[smuzaffar]

+1