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https://issues.apache.org/jira/browse/TEZ-1128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14002083#comment-14002083
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Siddharth Seth commented on TEZ-1128:
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bq. For some reason I am not able to assign the jira to you. Is something with
the role permissions changed?
Don't think anything has changed on jira. IAC, thanks for reporting this issue.
Splitting this into two jiras - one for the MR partitioned not working as it
should, and the second for ShuffledUnorderedKVInput not handling partial empty
partitions correctly.
> OnFileUnorderedPartitionedKVOutput does not handle partitioning correctly
> -------------------------------------------------------------------------
>
> Key: TEZ-1128
> URL: https://issues.apache.org/jira/browse/TEZ-1128
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Rohini Palaniswamy
>
> Two issues:
> 1) It does not set value of
> TezJobConfig.TEZ_RUNTIME_NUM_EXPECTED_PARTITIONS. So MRPartitioner assumes
> the number of partitions is 1 and goes with a default partitioner that writes
> only to last partition.
> 2) If one of the partitions has empty output (due to issue 1) it gets stuck
> without fetching input.
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