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https://issues.apache.org/jira/browse/ORC-233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16136422#comment-16136422
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ASF GitHub Bot commented on ORC-233:
------------------------------------
Github user dongjoon-hyun commented on the issue:
https://github.com/apache/orc/pull/160
Hi, @omalley .
Could you review this PR?
> Allow `orc.include.columns` to be empty
> ---------------------------------------
>
> Key: ORC-233
> URL: https://issues.apache.org/jira/browse/ORC-233
> Project: ORC
> Issue Type: Bug
> Components: Java
> Affects Versions: 1.4.0
> Reporter: Dongjoon Hyun
>
> Apache ORC should support returning all NULLs by the following.
> {code}
> conf.set(OrcConf.INCLUDE_COLUMNS.getAttribute, "")
> {code}
> Currently, it raises the following exceptions.
> {code}
> For input string: ""
> java.lang.NumberFormatException: For input string: ""
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
> at java.lang.Integer.parseInt(Integer.java:592)
> at java.lang.Integer.parseInt(Integer.java:615)
> at
> org.apache.orc.mapred.OrcInputFormat.parseInclude(OrcInputFormat.java:69)
> {code}
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