Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/17655
If the table name is `Things`, it works well. So far, the only issue I hit
is the big `I`, because `toLowerCase` in SessionCatalog converts it to a
non-alphabic character `ı`.
Updated the test case by adding the column names having `I`. I did not go
over the code base to prove all the cases work well.
Avro serde issues can be easily reproduced. For example,
```SQL
withLocale("tr") {
withTable("t", "t1") {
Seq(1 -> "a").toDF("i", "j")
.write.format("hive").option("fileFormat",
"avro").saveAsTable("t")
}
}
```
The error is from the underlying avro schema parser. It is not caused by
our Spark, I think.
```
Caused by: org.apache.avro.SchemaParseException: Undefined name: "ınt"
at org.apache.avro.Schema.parse(Schema.java:1162)
```
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