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From "Geoff Hendrey" <ghend...@decarta.com>
Subject RE: bug in backport? How to work around?
Date Wed, 02 Mar 2011 05:00:29 GMT
Is there any known risk in upgrading a 0.89 installion to 0.90.1?

-geoff

-----Original Message-----
From: saint.ack@gmail.com [mailto:saint.ack@gmail.com] On Behalf Of Stack
Sent: Tuesday, March 01, 2011 8:45 PM
To: user@hbase.apache.org
Subject: Re: bug in backport? How to work around?

Did you try comparing 0.90.20100924 to 0.90.1 to see if changes? Does
your hbase have 'HBASE-3392  Update backport of InputSampler to
reflect MAPREDUCE-1820'?  If not, want to apply it -- or just fast
forward your install to 0.90.1?

St.Ack

On Tue, Mar 1, 2011 at 8:38 PM, Geoff Hendrey <ghendrey@decarta.com> wrote:
> I am using HBase 0.89.20100924. I get a NullPointerException from
> org.apache.hadoop.hbase.mapreduce.hadoopbackport.InputSampler:
>
>
>
>     [exec] Exception in thread "main" java.lang.NullPointerException
>
>    [exec]     at
> org.apache.hadoop.mapreduce.lib.input.SequenceFileRecordReader.nextKeyVa
> lue(SequenceFileRecordReader.java:67)
>
>     [exec]     at
> org.apache.hadoop.hbase.mapreduce.hadoopbackport.InputSampler$RandomSamp
> ler.getSample(InputSampler.java:219)
>
>     [exec]     at
> org.apache.hadoop.hbase.mapreduce.hadoopbackport.InputSampler.writeParti
> tionFile(InputSampler.java:314)
>
>
>
> I saw a post claiming that this is because of a bug in InputSampler in
> which initialize has not been called on the SequenceFileRecordReader.
> This seems plausible, from looking at the source in
> hbase-0.89.20100924-src.tar.gz. Any advice would be appreciated since
> this is blocking me from using the TotalOrderingPartitioner.
>
>
>
> -geoff
>
>
>
>
>
>
>
>

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