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https://issues.apache.org/jira/browse/ORC-21?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14994716#comment-14994716
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ASF GitHub Bot commented on ORC-21:
-----------------------------------
Github user omalley commented on a diff in the pull request:
https://github.com/apache/orc/pull/12#discussion_r44199813
--- Diff: c++/src/Reader.cc ---
@@ -1433,6 +1538,7 @@ namespace orc {
}
void ReaderImpl::startNextStripe() {
+ reader.reset(); // ColumnReaders use lots of memory; free old memory
first
--- End diff --
I'm not sure, but this likely causes a performance regression.
> Add functionality to estimate memory footprint
> ----------------------------------------------
>
> Key: ORC-21
> URL: https://issues.apache.org/jira/browse/ORC-21
> Project: Orc
> Issue Type: Task
> Reporter: Aliaksei Sandryhaila
> Assignee: Aliaksei Sandryhaila
>
> ORC library allocates multiple large buffers to read and materialize ORC
> files. For stability of applications that use the library, it may be
> desirable to have an estimate (preferably, a tight upper bound) of a memory
> footprint.
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