Major Description
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:
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();
...
}
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:
[" ", " "] [" ", " "] [" ", " "] [" ", " "] [" ", " "] [" ", " "] [" ", " "] [" ", " "] [" ", " "] [" ", " "]
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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