[jira] [Updated] (TEZ-2315) TEZ does not call checkOutputSpecs on OutputFormat

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-2315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Shelukhin updated TEZ-2315:
----------------------------------
    Assignee: Siddharth Seth

> TEZ does not call checkOutputSpecs on OutputFormat
> --------------------------------------------------
>
>                 Key: TEZ-2315
>                 URL: https://issues.apache.org/jira/browse/TEZ-2315
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Siddharth Seth
>
> In JobSubmitter::submitJobInternal, MR does:
> {noformat}
>   private void checkSpecs(Job job) throws ClassNotFoundException, 
>       InterruptedException, IOException {
>     JobConf jConf = (JobConf)job.getConfiguration();
>     // Check the output specification
>     if (jConf.getNumReduceTasks() == 0 ? 
>         jConf.getUseNewMapper() : jConf.getUseNewReducer()) {
>       org.apache.hadoop.mapreduce.OutputFormat<?, ?> output =
>         ReflectionUtils.newInstance(job.getOutputFormatClass(),
>           job.getConfiguration());
>       output.checkOutputSpecs(job);
>     } else {
>       jConf.getOutputFormat().checkOutputSpecs(jtFs, jConf);
>     }
>   }
> {noformat}
> Note that if inputformat does not exist, it is created via reflection specifically for this call. 
> Tez should also call this. In Hive, via HiveOutputFormatImpl, this methods is called on FileSinkOperator, which calls it on custom formats. This is necessary for some of them because they set configuration there.



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