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Posted to commits@hudi.apache.org by "sivabalan narayanan (Jira)" <ji...@apache.org> on 2021/01/24 21:05:00 UTC

[jira] [Updated] (HUDI-1539) Bug in HoodieCombineRealtimeRecordReader returns wrong results

     [ https://issues.apache.org/jira/browse/HUDI-1539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

sivabalan narayanan updated HUDI-1539:
--------------------------------------
    Labels: user-support-issues  (was: )

> Bug in HoodieCombineRealtimeRecordReader returns wrong results
> --------------------------------------------------------------
>
>                 Key: HUDI-1539
>                 URL: https://issues.apache.org/jira/browse/HUDI-1539
>             Project: Apache Hudi
>          Issue Type: Bug
>            Reporter: satish
>            Priority: Critical
>              Labels: user-support-issues
>
> https://github.com/apache/hudi/issues/2346#issuecomment-758591316 
> in a rt table
> the hive query has predicate push down
> there are no less than 3 splits (thus no less than 3 recordReaders in HoodieCombineRealtimeRecordReader), and the records satisfy the predicate are in the split which is in a relatively back position of the List
> 2 recordReaders in succession with this.currentRecordReader.next(key, value) returns false, as the predicate push down has filtered the baseFile.
> In step 4, it leads to HoodieCombineRealtimeRecordReader::next(NullWritable key, ArrayWritable value) return false and the reader will stop read next. So, records which satisfy the predicate are in the remanined recordReaders but can not be read.



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