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Posted to common-issues@hadoop.apache.org by "Aaron Fabbri (JIRA)" <ji...@apache.org> on 2017/02/20 05:15:44 UTC
[jira] [Created] (HADOOP-14096) s3guard: regression in
dirListingUnion
Aaron Fabbri created HADOOP-14096:
-------------------------------------
Summary: s3guard: regression in dirListingUnion
Key: HADOOP-14096
URL: https://issues.apache.org/jira/browse/HADOOP-14096
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: HADOOP-13345
Reporter: Aaron Fabbri
Priority: Critical
Just noticed HADOOP-14020 introduced a bug in S3Guard#dirListingUnion.
The offending change is here:
{noformat}
- if (dirMeta.get(s.getPath()) == null) {
- dirMeta.put(s);
- }
+ changed = changed || dirMeta.put(s);
+ }
+
{noformat}
hint: Logical OR is a short-circuit operator.
Easy fix, but should probably come with a unit test for dirListingUnion().
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