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From "Akira Ajisaka (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-14683) FileStatus.compareTo binary compat issue between 2.7 and 2.8
Date Tue, 25 Jul 2017 05:42:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-14683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16099531#comment-16099531
] 

Akira Ajisaka commented on HADOOP-14683:
----------------------------------------

It is not possible to add old overload and keep new api because of compile error.
{noformat}
[ERROR] /Users/ajisaka/git/hadoop/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileStatus.java:[332,14]
name clash: compareTo(org.apache.hadoop.fs.FileStatus) in org.apache.hadoop.fs.FileStatus
overrides a method whose erasure is the same as another method, yet neither overrides the
other
[ERROR] first method:  compareTo(java.lang.Object) in org.apache.hadoop.fs.FileStatus
[ERROR] second method: compareTo(T) in java.lang.Comparable
{noformat}
This API is {{@Public}} and {{@Stable}}, so I'm thinking it's good to revert HADOOP-12209
from branch-2 and branch-2.8.

> FileStatus.compareTo binary compat issue between 2.7 and 2.8
> ------------------------------------------------------------
>
>                 Key: HADOOP-14683
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14683
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>
> See HIVE-17133. Looks like the signature change is causing issues; according to [~jnp]
this is a public API.
> Is it possible to add the old overload back (keeping the new one presumably) in a point
release on 2.8? That way we can avoid creating yet another shim for this in Hive.



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