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https://issues.apache.org/jira/browse/TEZ-1344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Pivovarov resolved TEZ-1344.
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Resolution: Cannot Reproduce
> Combiner counters reported by Tez look wrong
> --------------------------------------------
>
> Key: TEZ-1344
> URL: https://issues.apache.org/jira/browse/TEZ-1344
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Cheolsoo Park
> Priority: Minor
>
> Combiner input/output counters reported by a Tez job seems wrong
> {code}
> org.apache.hadoop.mapreduce.TaskCounter:
> COMBINE_OUTPUT_RECORDS 35,977,263,353
> COMBINE_INPUT_RECORDS 1,000,529,333
> {code}
> As can be seen, combiner output records > input records?!
> The same counters from a MR job looks as follows-
> {code}
> Map-Reduce Framework:
> Combine output records 1,000,316,600
> Combine input records 35,977,049,632
> {code}
> Somehow input and output are swapped?
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