Hi Donald,

It would be useful to know if there were any intervening ERROR messages in
between the second and fourth lines.  There is a spurious ERROR message that
gets printed out after a range split along the lines of "range not found"
You'll need to filter these out.

- Doug

On Wed, Dec 3, 2008 at 4:40 AM, donald <[EMAIL PROTECTED]> wrote:

>
> Hi Doug,
>
> Today we find a strange problem in one Range Server's log:
>
> $ grep 'Reporting.*sir_ip_index' RangeServer.log | lcat
> [...]
> Tue Dec  2 04:37:42 2008 INFO Hypertable.RangeServer : (/home/pp/src/
> hypertable/src/cc/Hypertable/RangeServer/Range.cc:559) Reporting newly
> split off range sir_ip_index[116.17.176.112..116.217.10.39] to Master
> Tue Dec  2 04:40:38 2008 INFO Hypertable.RangeServer : (/home/pp/src/
> hypertable/src/cc/Hypertable/RangeServer/Range.cc:559) Reporting newly
> split off range sir_ip_index[116.217.10.39..116.217.49.1] to Master
> Tue Dec  2 10:24:11 2008 INFO Hypertable.RangeServer : (/home/pp/src/
> hypertable/src/cc/Hypertable/RangeServer/Range.cc:559) Reporting newly
> split off range sir_ip_index[122.224.30.210..122.5.114.102] to Master
> Wed Dec  3 04:07:42 2008 INFO Hypertable.RangeServer : (/home/pp/src/
> hypertable/src/cc/Hypertable/RangeServer/Range.cc:559) Reporting newly
> split off range sir_ip_index[116.217.49.1..116.217.49.1] to Master
>
> The second and fourth lines indicate that two ranges with the same end
> row are split off, so they share the same row key in METADATA  table,
> and the latter overwrite the former's METADATA record. In this way
> rows bigger than 116.217.10.39 and smaller than 116.217.49.1 become
> unreachable.
>
> It is strange that the last split contains a range with the same start
> row and end row. We reviewed all related code but couldn't find any
> possible reason why this could happen. Do you have any idea?
>
> We have multiple access groups in this sir_ip_index table.
>
> Thanks
>
> Donald
>
>
> >
>

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