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https://issues.apache.org/jira/browse/HIVE-23492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated HIVE-23492:
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Description: Wherever there is an exists() call before open() or delete(),
remove it and infer from the FileNotFoundException raised in open/delete that
the file does not exist. Exists() just checks for a FileNotFoundException so
it's a waste of time, especially on higher-latency stores (was: Wherever there
is an exists() call before open() or delete(), remove it and infer from the
FileNotFoundException raised in open/delete that the file does not exist.
Exists() just checks for a FileNotFoundException so it's a waste of time,
especially on clunkier FSes)
> Remove unnecessary FileSystem#exists calls from ql module
> ---------------------------------------------------------
>
> Key: HIVE-23492
> URL: https://issues.apache.org/jira/browse/HIVE-23492
> Project: Hive
> Issue Type: Improvement
> Reporter: Karen Coppage
> Assignee: Karen Coppage
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-23492.01.patch, HIVE-23492.02.patch,
> HIVE-23492.03.patch, HIVE-23492.04.patch, HIVE-23492.05.patch
>
>
> Wherever there is an exists() call before open() or delete(), remove it and
> infer from the FileNotFoundException raised in open/delete that the file does
> not exist. Exists() just checks for a FileNotFoundException so it's a waste
> of time, especially on higher-latency stores
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