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https://issues.apache.org/jira/browse/ORC-305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16412852#comment-16412852
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Sandeep More commented on ORC-305:
----------------------------------
Looks like the streamFactory does not expose the getPhysicalWriter(), the
[WriterContext|https://github.com/apache/orc/blob/ded204a4a10bfad1ed739fc98f612a41005640c5/java/core/src/java/org/apache/orc/impl/writer/WriterContext.java]
interface for streamFactory, used by TreeWriterBase does not have the
getPhysicalWriter() method. That method is exposed by a different
WriterContext, [OrcFile.WriterContext
|https://github.com/apache/orc/blob/master/java/core/src/java/org/apache/orc/OrcFile.java#L330]
but it can't be accessed by TreeWriterBase class.
One way would be to add getWriter() method to
[org.apache.orc.impl.writer.WriterContext|https://github.com/apache/orc/blob/ded204a4a10bfad1ed739fc98f612a41005640c5/java/core/src/java/org/apache/orc/impl/writer/WriterContext.java]
class, so we could do
TreeWriterBase.streamFactory.getWriter() to get the PhysicalWriter. let me
know your thoughts !
> Add column statistics for the size on disk
> ------------------------------------------
>
> Key: ORC-305
> URL: https://issues.apache.org/jira/browse/ORC-305
> Project: ORC
> Issue Type: Test
> Reporter: Owen O'Malley
> Assignee: Sandeep More
> Priority: Major
>
> It would be great to have the size on disk of each column.
> You can generate this by adding up the sizes of the dictionary and data
> streams.
> It is only relevant at the stripe and file level.
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