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HBase, mail # user - Wrong input split locations after enabling reverse DNS


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Re: Wrong input split locations after enabling reverse DNS
Robert Dyer 2012-12-18, 01:26
That's what I thought too.  Except I am running 0.94.2 and this fix was
released in 0.90.4.
On Mon, Dec 17, 2012 at 5:11 PM, Stack <[EMAIL PROTECTED]> wrote:

> On Sun, Dec 16, 2012 at 1:16 AM, Robert Dyer <[EMAIL PROTECTED]> wrote:
>
>> I recently enabled reverse DNS on my test cluster.  Now when I run a MR
>> job, the HBase input split locations are all adding a period to the end.
>>  For example:
>>
>> /default-rack/foo-1.
>> /default-rack/foo-2.
>>
>> Yet the machine locations are still correct:
>>
>> /default-rack/foo-1
>> /default-rack/foo-2
>>
>> Since those strings don't match, it isn't assigning the tasks locally.  It
>> actually thinks 100% of the map tasks are rack-local and 0% data-local
>> (although in reality, some still wind up being data-local due to sheer
>> luck).
>>
>> What is the issue here?  Note that I don't have this problem with the MR
>> tasks using SequenceFile as input, only with HBase's TableMapper.
>>
>
>
> Looks like https://issues.apache.org/jira/browse/HBASE-4109 ?
> St.Ack
>
>