[Bro-Dev] [JIRA] (BIT-1180) Input framework subsiquient REREAD fails after file update

[Aashish Sharma (JIRA)]

Aashish Sharma created BIT-1180:
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             Summary: Input framework subsiquient REREAD fails after file update 
                 Key: BIT-1180
                 URL: https://bro-tracker.atlassian.net/browse/BIT-1180
             Project: Bro Issue Tracker
          Issue Type: Problem
          Components: Bro
    Affects Versions: 2.2
            Reporter: Aashish Sharma
            Priority: High


I have a file that gets updated every hour and I am using it as a feed into bro using input framework. Every hour I write a list of IP addresses into this file. For many updates everything works fine but Occasionally,  I see the following error:

Apr  6 05:00:09 Reporter::ERROR /feeds/Blacklist/CURRENT.24hrs_BRO/Input::READER_ASCII: could not read first line        (empty)

After this failure/message,  any subsequent updates on the file are ignored by the input framework. 

>From visual inspection the file looks just fine and header/data (1 column of IP addresses) is there as expected but somehow input framework doesn't like it. It seems that every hour when update the file using a cron script, on a rare occasion the  file is empty for a minuscule duration after which this error starts. 

for further REREADS data won't get updated into the tables anymore once the above Reporter::ERROR kicks in. 

Please let me know if you need ways to reproduce this error condition or have more questions for me. 



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