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Posted to common-issues@hadoop.apache.org by "Brahma Reddy Battula (JIRA)" <ji...@apache.org> on 2015/06/02 11:37:17 UTC
[jira] [Commented] (HADOOP-12052) IPC client downgrades all
exception types to IOE, breaks callers trying to use them
[ https://issues.apache.org/jira/browse/HADOOP-12052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568840#comment-14568840 ]
Brahma Reddy Battula commented on HADOOP-12052:
-----------------------------------------------
Yes ,Following change at Client.java in HADOOP-11772 induces.
{code}
+ } catch (ExecutionException e) {
+ throw new IOException(e);
}
{code}
> IPC client downgrades all exception types to IOE, breaks callers trying to use them
> -----------------------------------------------------------------------------------
>
> Key: HADOOP-12052
> URL: https://issues.apache.org/jira/browse/HADOOP-12052
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Steve Loughran
> Assignee: Brahma Reddy Battula
> Priority: Critical
> Fix For: 2.8.0
>
>
> The HADOOP-11772 cache changes mean that an exception such as {{UnknownHostException}} being raised on a Client connect is now being returned as a simple {{IOException}}, wrapping an {{ExecutionException}}, with the real exception being hidden inside that.
> This breaks any application which uses the exception class in a try/catch statement so as to choose different actions depending on the failure mode. This has surfaced in the SLIDER-896 tests, but is likely to happen in production too.
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