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https://issues.apache.org/jira/browse/ORC-226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16161767#comment-16161767
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ASF GitHub Bot commented on ORC-226:
------------------------------------
Github user majetideepak commented on a diff in the pull request:
https://github.com/apache/orc/pull/151#discussion_r138157541
--- Diff: c++/include/orc/Reader.hh ---
@@ -288,6 +288,18 @@ namespace orc {
virtual uint64_t getCompressionSize() const = 0;
/**
+ * Get ID of writer that generated the file.
+ * @return UNKNOWN_WRITER if the writer ID is undefined
+ */
+ virtual WriterId getWriterId() const = 0;
+
+ /**
+ * Get the writer id value when getWriterId() returns an unknown
writer.
+ * @return the integer value of the writer ID.
+ */
+ virtual int getUnknownWriterIdValue() const = 0;
--- End diff --
Should this be `getWriteIdValue`? I think the implementation returns both
known and unknown ids?
> Support getWriterId in c++ reader interface
> -------------------------------------------
>
> Key: ORC-226
> URL: https://issues.apache.org/jira/browse/ORC-226
> Project: ORC
> Issue Type: Sub-task
> Components: C++
> Reporter: Xiening Dai
>
> We just added writer ID to identify files generated by different writers (we
> have three currently). Need an interface for reader to get this ID back.
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