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Posted to user@hbase.apache.org by Otis Gospodnetic <ot...@yahoo.com> on 2011/03/08 22:00:05 UTC
HFile output - hfile.AVG_KEY_LEN always zero?
Hi,
I thought I could use the handy HFile from command line to give me some stats
about a given region or HFile, like the average key and value lengths.
However, this is what I got:
$ hbase org.apache.hadoop.hbase.io.hfile.HFile -m -f
hdfs://hackme/hbase/fifi/84f19e93c3d567a485aa6794043449e1/xx/8364597447655745527
...
hfile.AVG_KEY_LEN = \x00\x00\x00!
hfile.AVG_VALUE_LEN = \x00\x00\x00\x07
How come the average key length is 0?
I tried several HFiles and they all gave me the same results (although I also
saw that "!" at the end of AVG_KEY_LEN can also be "#" and maybe some other
characters)
Thanks,
Otis
----
Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
Lucene ecosystem search :: http://search-lucene.com/
Re: HFile output - hfile.AVG_KEY_LEN always zero?
Posted by Otis Gospodnetic <ot...@yahoo.com>.
Ah, great, thanks!
I'm using 0.89................. so I'll check this again once we have 0.90.* in
place.
Otis
----
Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
Lucene ecosystem search :: http://search-lucene.com/
----- Original Message ----
> From: Lars George <la...@gmail.com>
> To: user@hbase.apache.org
> Sent: Tue, March 8, 2011 8:03:31 PM
> Subject: Re: HFile output - hfile.AVG_KEY_LEN always zero?
>
> This also has been improved in 0.90.0 as per
>
> http://issues.apache.org/jira/browse/HBASE-3132
>
> What version are you on Otis?
>
> Lars
>
> On Tue, Mar 8, 2011 at 10:25 PM, Ryan Rawson <ry...@gmail.com> wrote:
> > Ascii table tells me bang = 33
> >
> > http://www.asciitable.com/
> >
> > so the average key len is 33.
> >
> > :-)
> >
> > -ryan
> >
> > On Tue, Mar 8, 2011 at 1:00 PM, Otis Gospodnetic
> > <ot...@yahoo.com> wrote:
> >> Hi,
> >>
> >> I thought I could use the handy HFile from command line to give me some
>stats
> >> about a given region or HFile, like the average key and value lengths.
> >> However, this is what I got:
> >>
> >> $ hbase org.apache.hadoop.hbase.io.hfile.HFile -m -f
> >>
>hdfs://hackme/hbase/fifi/84f19e93c3d567a485aa6794043449e1/xx/8364597447655745527
> >> ...
> >> hfile.AVG_KEY_LEN = \x00\x00\x00!
> >> hfile.AVG_VALUE_LEN = \x00\x00\x00\x07
> >>
> >> How come the average key length is 0?
> >> I tried several HFiles and they all gave me the same results (although I
>also
> >> saw that "!" at the end of AVG_KEY_LEN can also be "#" and maybe some
other
> >> characters)
> >>
> >> Thanks,
> >> Otis
> >> ----
> >> Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
> >> Lucene ecosystem search :: http://search-lucene.com/
> >>
> >>
> >
>
Re: HFile output - hfile.AVG_KEY_LEN always zero?
Posted by Lars George <la...@gmail.com>.
This also has been improved in 0.90.0 as per
http://issues.apache.org/jira/browse/HBASE-3132
What version are you on Otis?
Lars
On Tue, Mar 8, 2011 at 10:25 PM, Ryan Rawson <ry...@gmail.com> wrote:
> Ascii table tells me bang = 33
>
> http://www.asciitable.com/
>
> so the average key len is 33.
>
> :-)
>
> -ryan
>
> On Tue, Mar 8, 2011 at 1:00 PM, Otis Gospodnetic
> <ot...@yahoo.com> wrote:
>> Hi,
>>
>> I thought I could use the handy HFile from command line to give me some stats
>> about a given region or HFile, like the average key and value lengths.
>> However, this is what I got:
>>
>> $ hbase org.apache.hadoop.hbase.io.hfile.HFile -m -f
>> hdfs://hackme/hbase/fifi/84f19e93c3d567a485aa6794043449e1/xx/8364597447655745527
>> ...
>> hfile.AVG_KEY_LEN = \x00\x00\x00!
>> hfile.AVG_VALUE_LEN = \x00\x00\x00\x07
>>
>> How come the average key length is 0?
>> I tried several HFiles and they all gave me the same results (although I also
>> saw that "!" at the end of AVG_KEY_LEN can also be "#" and maybe some other
>> characters)
>>
>> Thanks,
>> Otis
>> ----
>> Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
>> Lucene ecosystem search :: http://search-lucene.com/
>>
>>
>
Re: HFile output - hfile.AVG_KEY_LEN always zero?
Posted by Ryan Rawson <ry...@gmail.com>.
Ascii table tells me bang = 33
http://www.asciitable.com/
so the average key len is 33.
:-)
-ryan
On Tue, Mar 8, 2011 at 1:00 PM, Otis Gospodnetic
<ot...@yahoo.com> wrote:
> Hi,
>
> I thought I could use the handy HFile from command line to give me some stats
> about a given region or HFile, like the average key and value lengths.
> However, this is what I got:
>
> $ hbase org.apache.hadoop.hbase.io.hfile.HFile -m -f
> hdfs://hackme/hbase/fifi/84f19e93c3d567a485aa6794043449e1/xx/8364597447655745527
> ...
> hfile.AVG_KEY_LEN = \x00\x00\x00!
> hfile.AVG_VALUE_LEN = \x00\x00\x00\x07
>
> How come the average key length is 0?
> I tried several HFiles and they all gave me the same results (although I also
> saw that "!" at the end of AVG_KEY_LEN can also be "#" and maybe some other
> characters)
>
> Thanks,
> Otis
> ----
> Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch
> Lucene ecosystem search :: http://search-lucene.com/
>
>