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https://issues.apache.org/jira/browse/ORC-115?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15726176#comment-15726176
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Owen O'Malley commented on ORC-115:
-----------------------------------
BytesColumnVector.stringifyValue is broken by assuming that vector[r] always
points to buffer. *sigh*
> Unable to write string data into ORC file (or at least read it back)
> --------------------------------------------------------------------
>
> Key: ORC-115
> URL: https://issues.apache.org/jira/browse/ORC-115
> Project: Orc
> Issue Type: Bug
> Components: Java
> Affects Versions: 1.2.2
> Reporter: Scott Wells
>
> I'm trying to create a little utility to convert CSV files into ORC files.
> I've noticed that the resulting ORC files don't seem quite correct, though.
> In an effort to create a simple reproducible test case, I just changed the
> "Writing/Reading ORC Files" examples here:
> https://orc.apache.org/docs/core-java.html
> to create a file based on a pair of strings instead of integers. Basically I
> changed the loop as follows:
> {code}
> BytesColumnVector first = (BytesColumnVector) writeBatch.cols[0];
> BytesColumnVector last = (BytesColumnVector) writeBatch.cols[1];
> for (int r = 0; r < 10; ++r)
> {
> String firstName = ("First-" + r).intern();
> String lastName = ("Last-" + (r * 3)).intern();
> ...
> }
> {code}
> The file writes without errors, and if I write it with no compression, I can
> see the data using {{strings my-file.orc}}. However, when I then try to read
> the data back from the file and print out the resulting batches to the
> console, I get the following:
> {noformat}
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> [" ", " "]
> {noformat}
> I've been completely unable to find any documentation or example code that
> would help me to understand why this isn't working. Any insights about what
> I may be doing wrong here would be greatly appreciated!
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