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Posted to dev@parquet.apache.org by "Deepak Majeti (JIRA)" <ji...@apache.org> on 2019/08/08 14:23:00 UTC

[jira] [Created] (PARQUET-1636) [C++] Incompatibility due to moving from Parquet to Arrow IO interfaces

Deepak Majeti created PARQUET-1636:
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             Summary: [C++] Incompatibility due to moving from Parquet to Arrow IO interfaces
                 Key: PARQUET-1636
                 URL: https://issues.apache.org/jira/browse/PARQUET-1636
             Project: Parquet
          Issue Type: Improvement
          Components: parquet-cpp
            Reporter: Deepak Majeti
            Assignee: Wes McKinney


We moved to the Arrow IO interfaces as part of https://issues.apache.org/jira/browse/PARQUET-1422

However, the BufferedInputStream implementations between Parquet and Arrow are different.

Parquet's BufferedInputStream used to takes a RandomAccessSource. Arrow's implementation takes an InputStream. As a result, the {{::arrow::io::BufferedInputStream::Peek(which invokes Read())}} implementation causes the raw source (input to {{BufferedInputStream}}) to change its offset on Peek(). This did not happen in the Parquet's BufferedInputStream implementation.



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