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https://issues.apache.org/jira/browse/TRAFODION-3171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16570599#comment-16570599
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ASF GitHub Bot commented on TRAFODION-3171:
-------------------------------------------

Github user sureshsubbiah commented on a diff in the pull request:

    https://github.com/apache/trafodion/pull/1674#discussion_r207986948
  
    --- Diff: core/sql/executor/ExHdfsScan.cpp ---
    @@ -571,6 +569,7 @@ ExWorkProcRetcode ExHdfsScanTcb::work()
                  hdfsScan_ = HdfsScan::newInstance((NAHeap *)getHeap(), 
hdfsScanBuf_, hdfsScanBufMaxSize_, 
                                 hdfsScanTdb().hdfsIoByteArraySizeInKB_, 
                                 &hdfsFileInfoListAsArray_, beginRangeNum_, 
numRanges_, hdfsScanTdb().rangeTailIOSize_, 
    +                            isSequenceFile(), 
hdfsScanTdb().recordDelimiter_, 
    --- End diff --
    
    Thank you for explaining


> Refactor Sequence File Reading to use the new implementation
> ------------------------------------------------------------
>
>                 Key: TRAFODION-3171
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-3171
>             Project: Apache Trafodion
>          Issue Type: Sub-task
>          Components: sql-exe
>            Reporter: Selvaganesan Govindarajan
>            Assignee: Selvaganesan Govindarajan
>            Priority: Major
>
> SequenceFileReader is done via JNI/Java earlier. However, the HdfsScan was 
> traversing the older states in ExHdfsScanTcb work method. This new 
> implementation should use the current ByteBuffer infrastructure to enable 
> obsoleting the older implemenation 



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