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From vdiravka <...@git.apache.org>
Subject [GitHub] drill issue #846: DRILL-5544: Out of heap running CTAS against text delimite...
Date Fri, 09 Jun 2017 20:02:09 GMT
Github user vdiravka commented on the issue:

    https://github.com/apache/drill/pull/846
  
    @paul-rogers As I mentioned in my previous comment the page size can't greatly exceed
1Mb (default value of page-size option in Drill). And I checked it -- almost every time the
page size is much less than 1 MB.
    
    The data, which are buffered - all pages within one row group. And when buffered data
exceeds the block-size then the row group will be written to the disk and flushed from the
stream buffer.
    Which is what the current code does.
    
    I compared of creating a large parquet tables with current Drill master version and version
of Drill with my fix and received the same performance. Also I found the same time of passing
the Drill's tests
    
    The branch is rebased to the last Drill master version. 


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