Atlas-connect-l mailing list

[Andrew Hanushevsky <abh AT slac.stanford.edu>]

Indeed, the "failed to read header" is an error message which isn't really 
fatal. It is unfortunate that it even comes out. It does, however, 
indicate that the server is not responding and is likely overloaded. The 
client makes several attempts to recover from this which is why you see 
the message repeated. The error message itself is generated by the xrootd 
client.

Andy

On Fri, 12 Sep 2014, Rob Gardner wrote:

> Harinder,
>
> I believe this is the well-known but innocuous error from Xrootd itself.  I 
> have Andy in cc to confirm.
>
> Rob
>
>
> On Sep 12, 2014, at 11:30 AM, Dr. Harinder Singh Bawa 
> <harinder.singh.bawa AT gmail.com> wrote:
>
> > Excuse me of my previous email. I realised that I could actually read the 
> > files but not sure was getting warning messages. My script could actually ran 
> > over and gave me the output. The only thing is that the reading of file is 
> > not consistent, I mean it takes more than 1 trial to read the file. Like 
> > below:
> >
> >
> > *****************************************************
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000035.root.1
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000035.root.1
> >  retry reading 1
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000057.root.1
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000057.root.1
> >  retry reading 1
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000118.root.1
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000118.root.1
> >  retry reading 1
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000068.root.1
> >
> >
> > & server error messages in my error file as:
> >
> > 140911 18:40:24 25755 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > Info in <D3PD::TrigConfigSvcD3PD::Initialize>: Loaded configuration: SMK: 
> > 1487, L1PSK: 8979, HLTPSK: 7238
> > Info in <D3PD::TrigConfigSvcD3PD::Initialize>: Loaded configuration: SMK: 
> > 1487, L1PSK: 8979, HLTPSK: 7238
> > 140911 18:47:24 26415 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140911 18:48:41 25741 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140911 18:48:53 25710 Xrd: CheckErrorStatus: Server 
> > [agh3.atlas.unimelb.edu.au:11000] declared: session not found(error code: 
> > 3011)
> >
> >
> >
> > Harinder
> >
> > root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SLIMSMQCD.01196851._000068.root.1
> >  retry reading 1
> >
> >
> >
> > On Thu, Sep 11, 2014 at 9:29 PM, Dr. Harinder Singh Bawa 
> > <harinder.singh.bawa AT gmail.com> wrote:
> > Hello,
> >
> > I am wondering if this is FAXBOX problem or dataset/site problem. In one 
> > example code, I am could read the dataset using xrootd but In another code, I 
> > am getting following error. (The diff is only input dataset).
> > BTW I can run interactively with no problem using xrootd. When I submit the 
> > job in atlasconnect: I am getting following error:
> >
> > [hbawa@login SkimAndSlimD3PDs_Fresno]$ vi error/Example_Skim.error.1
> > TClass::TClass:0: RuntimeWarning: no dictionary for class pair<string,string> 
> > is available
> > 140825 16:17:17 19181 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:17:41 19185 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:18:17 19190 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:18:47 19331 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:19:47 19337 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:20:03 19342 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:20:08 19163 Xrd: Connect: can't open connection to 
> > [mardisk12.in2p3.fr:1095]
> > 140825 16:20:08 19163 Xrd: XrdNetFile: Error creating logical connection to 
> > mardisk12.in2p3.fr:1095
> > 140825 16:20:08 19163 Xrd: GoToAnotherServer: Error connecting to 
> > [mardisk12.in2p3.fr:1095
> > 140825 16:20:17 19345 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:20:37 19163 Xrd: Connect: can't open connection to 
> > [xrdfed08.cern.ch:1094]
> > 140825 16:20:37 19163 Xrd: XrdNetFile: Error creating logical connection to 
> > xrdfed08.cern.ch:1094
> > 140825 16:20:37 19163 Xrd: GoToAnotherServer: Error connecting to 
> > [xrdfed08.cern.ch:1094
> > 140825 16:20:43 19349 Xrd: XrdClientMessage::ReadRaw: Failed to read header 
> > (8 bytes).
> > 140825 16:20:53 19163 Xrd: SendGenCommand: Too many redirections for request  
> > kXR_open. Aborting command.
> > 140825 16:20:53 19163 Xrd: Open: Error opening the file 
> > /atlas/rucio/data12_8TeV:NTUP_SMWZ.01122550._000047.root.2 on host 
> > dcdum01.aglt2.org:1094
> > Error in <TXNetFile::CreateXClient>: open attempt failed on 
> > root://xrootd.aglt2.org//atlas/rucio/data12_8TeV:NTUP_SMWZ.01122550._000047.root.2
> > Traceback (most recent call last):
> >   File "slimming_d3pd.py", line 965, in <module>
> >     sys.exit(main())
> >   File "slimming_d3pd.py", line 673, in main
> >     raise RuntimeError("no such file [%s]" % fname)
> > RuntimeError: no such file 
> > [root://xrootd.aglt2.org:1094//atlas/rucio/data12_8TeV:NTUP_SMWZ.01122550._000047.root.2]
> >
> > --
> > Dr. Harinder Singh Bawa
> >
> >
> > [web][facebook][youtube][twitter]
> >
> >
> >
> >
> >
> > --
> > Dr. Harinder Singh Bawa
> >
> >
> > [web][facebook][youtube][twitter]