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From "Mahadev konar (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-3423) Fetcher Thread should log proper exception
Date Sun, 27 Nov 2011 21:54:39 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-3423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mahadev konar updated MAPREDUCE-3423:
-------------------------------------

    Status: Open  (was: Patch Available)

Bhallamudi,
 Am not sure I get the changes in the second part of the patch:

{code}
- if (mapId == null || mapOutput == null) {
+ if (mapOutput == null) {
{code}

Also, the in the first part, wouldnt it be simpler if it was something like:

{code}
try{
} catch(IllegalArgument){
} catch (IOException) {
} catch(Exception) {
} 
{code}



                
> Fetcher Thread should log proper exception
> ------------------------------------------
>
>                 Key: MAPREDUCE-3423
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3423
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.24.0
>            Reporter: Bhallamudi Venkata Siva Kamesh
>         Attachments: MAPREDUCE-3423.patch
>
>
> Exception should be logged properly when there is any while deserializing Shuffle Header
information .
>     {code}
>       if (mapId == null || mapOutput == null) {
>         LOG.info("fetcher#" + id + " failed to read map header" + 
>                  mapId + " decomp: " + 
>                  decompressedLength + ", " + compressedLength, ioe);
>         return false;
>       }
>     {code}

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