[jira] Updated: (HADOOP-3256) JobHistory file on HDFS should not use the 'job name'

["Arun C Murthy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-3256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy updated HADOOP-3256:
----------------------------------

    Component/s: mapred

> JobHistory file on HDFS should not use the 'job name'
> -----------------------------------------------------
>
>                 Key: HADOOP-3256
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3256
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.17.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>            Priority: Blocker
>             Fix For: 0.17.0
>
>
> HADOOP-2178 introduced the feature of saving jobhistory logs on HDFS.
> Unfortunately the following code:
> {noformat}
>         // setup the history log file for this job
>         String logFileName = jobUniqueString +  
>                              "_" + user+ "_" + jobName;
>         if (logFileName.length() > MAX_FILENAME_SIZE) {
>           logFileName = logFileName.substring(0, MAX_FILENAME_SIZE-1);
>         }
> {noformat}
> is vulnerable to user-provided job names. 
> Specifically I ran into 'URISyntaxException' with jobs whose names include a ":".
> The easy fix is to ensure that we do not use the human-friendly job names and only the jobid.
> The long term fix is to ensure that Path handles filenames with _any_ characters.

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