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https://issues.apache.org/jira/browse/ORC-416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16645182#comment-16645182
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ASF GitHub Bot commented on ORC-416:
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dongjoon-hyun commented on issue #320: ORC-416: Avoid opening data reader when
there is no stripe
URL: https://github.com/apache/orc/pull/320#issuecomment-428629949
Hi, @omalley .
Could you review this PR?
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> Avoid opening data reader when there is no stripe
> -------------------------------------------------
>
> Key: ORC-416
> URL: https://issues.apache.org/jira/browse/ORC-416
> Project: ORC
> Issue Type: Bug
> Components: Java
> Affects Versions: 1.5.0, 1.5.1, 1.5.2, 1.5.3
> Reporter: Dongjoon Hyun
> Priority: Major
>
> Currently, `RecordReaderImpl` invokes `dataReader.open` in the middle of the
> constructor. We can postpone this until `advanceToNextRow` reads the stripe
> at the end of the constructor.
> {code:java}
> this.dataReader.open();
> {code}
> This will reduce the chance of potential open-file leakages due to
> IOException and OOM during `RecordReaderImpl` construction. Also, we can
> avoid it completely when there is no stripe in the file.
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