Scott Wells created ORC-115:
-------------------------------
Summary: 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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