Sergey Shelukhin created TEZ-2315:
-------------------------------------
Summary: 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
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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