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https://issues.apache.org/jira/browse/ORC-236?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16388858#comment-16388858
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Daniel commented on ORC-236:
----------------------------
Is this issue been resolved? What's the workaround, if not?
> orc-tools JsonReader does not support uniontype in schema
> ---------------------------------------------------------
>
> Key: ORC-236
> URL: https://issues.apache.org/jira/browse/ORC-236
> Project: ORC
> Issue Type: Bug
> Reporter: Anthony Hsu
> Priority: Major
>
> To repro:
> {noformat}
> $ cat sample.json
> {"foo":1}
> $ java -jar ~/lib/orc-tools-1.4.0-uber.jar convert -s
> "struct<foo:uniontype<int,string>>" -o output.orc sample.json
> log4j:WARN No appenders could be found for logger
> (org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
> log4j:WARN Please initialize the log4j system properly.
> log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
> info.
> Processing sample.json
> Exception in thread "main" java.lang.IllegalArgumentException: Unhandled type
> uniontype<int,string>
> at
> org.apache.orc.tools.convert.JsonReader.createConverter(JsonReader.java:233)
> at org.apache.orc.tools.convert.JsonReader.<init>(JsonReader.java:260)
> at org.apache.orc.tools.convert.ConvertTool.main(ConvertTool.java:67)
> at org.apache.orc.tools.Driver.main(Driver.java:112)
> {noformat}
> Seems like
> [JsonReader.createConverter|https://github.com/apache/orc/blob/635833d13ff4a5c6a4ea3d73bc41af3efaf816cd/java/tools/src/java/org/apache/orc/tools/convert/JsonReader.java#L224]
> does not support
> [UNION|https://github.com/apache/orc/blob/master/java/core/src/java/org/apache/orc/TypeDescription.java#L116].
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