williamhyun opened a new pull request #628:
URL: https://github.com/apache/orc/pull/628
### What changes were proposed in this pull request?
This PR aims to fix a bug in ConvertTool by using the provided schema in
case of a single file.
### Why are the changes needed?
**BEFORE**
```
% java -jar tools/target/orc-tools-1.7.0-SNAPSHOT-uber.jar convert
../examples/TestOrcFile.test1.orc
Merging schema from ../examples/TestOrcFile.test1.orc
Exception in thread "main" java.lang.IllegalArgumentException: Unhandled
type map<string,struct<int1:int,string1:string>>
at
org.apache.orc.tools.json.JsonSchemaFinder.makeHiveType(JsonSchemaFinder.java:314)
at
org.apache.orc.tools.json.JsonSchemaFinder.makeHiveType(JsonSchemaFinder.java:301)
at
org.apache.orc.tools.json.JsonSchemaFinder.addSchema(JsonSchemaFinder.java:319)
at
org.apache.orc.tools.convert.ConvertTool.buildSchema(ConvertTool.java:81)
at
org.apache.orc.tools.convert.ConvertTool.<init>(ConvertTool.java:188)
at
org.apache.orc.tools.convert.ConvertTool.main(ConvertTool.java:168)
at org.apache.orc.tools.Driver.main(Driver.java:108)
```
**AFTER**
```
% java -jar tools/target/orc-tools-1.7.0-SNAPSHOT-uber.jar convert
../examples/TestOrcFile.test1.orc
Merging schema from ../examples/TestOrcFile.test1.orc
Processing ../examples/TestOrcFile.test1.orc
```
### How was this patch tested?
Manually do the above procedure.
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