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From paul-rogers <...@git.apache.org>
Subject [GitHub] drill pull request #644: DRILL-4980: Upgrading of the approach of parquet da...
Date Wed, 09 Nov 2016 16:58:55 GMT
Github user paul-rogers commented on a diff in the pull request:

    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetWriter.java
    @@ -40,6 +40,16 @@
     public class ParquetWriter extends AbstractWriter {
       static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ParquetWriter.class);
    +/** Version of Drill's Parquet writer. Increment this version (by 1) any time we make
any format change to the file.
    + * Format changes include
    + * 1) supporting new data types,
    + * 2) changes to the format of data fields,
    + * 3) adding new metadata to the file footer, etc.
    + * Newer readers must be able to read old files. The Writer version tells the Parquet
reader how to interpret fields
    --- End diff --
    This is Javadoc, so needs HTML formatting. For the list:
        <li>Supporting new data types,</li>

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