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Accumulo >> mail # user >> MapReduce mapper not seeing all rows


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Re: MapReduce mapper not seeing all rows
Have you noticed any pattern in the rows it seems to be missing?  E.g.
every other row, the last row in each tablet, etc.?  When you set a range,
what range did you set?

Billie
On Tue, Feb 26, 2013 at 12:17 PM, Mike Hugo <[EMAIL PROTECTED]> wrote:

> Hello,
>
> I'm running a map reduce job over a table using AccumuloRowInputFormat.
>  For debugging purposes I'm logging the key.getRow() so I can see what rows
> it's finding as it progresses.
>
> If I don't specify any ranges on the input format, it skips significant
> number of rows - that is, I don't see any logging indicating that it
> traversed them.
>
> To see if it was a visibility issue, I tried explicitly setting a range,
> like this:
>
>         AccumuloRowInputFormat.setRanges(job.getConfiguration(), ranges);
>
> When doing that it does process the rows that it otherwise skips.
>
> The same TimestampFilter is being applied in both scenarios, no other
> filters / iterators are being used.
>
> Any thoughts on why, when run without the ranges specified, it isn't
> seeing a significant portion of the data?
>
> Thanks,
>
> Mike
>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB