Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
HBase, mail # user - Regions in transition


+
kiran 2013-02-08, 05:44
+
samar kumar 2013-02-08, 05:48
+
kiran 2013-02-08, 06:31
+
samar kumar 2013-02-08, 06:35
+
kiran 2013-02-08, 06:39
+
samar kumar 2013-02-08, 06:46
+
kiran 2013-02-08, 06:50
+
Samir Ahmic 2013-02-08, 07:08
+
samar kumar 2013-02-08, 07:15
+
kiran 2013-02-08, 07:50
+
kiran 2013-02-08, 12:39
+
ramkrishna vasudevan 2013-02-09, 10:07
Copy link to this message
-
Re: Regions in transition
kiran 2013-02-11, 05:16
I think it might be reason for the splits. From 0.94.0, seems the default
split policy has changes

http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/regionserver/ConstantSizeRegionSplitPolicy.html
On Sat, Feb 9, 2013 at 3:37 PM, ramkrishna vasudevan <
[EMAIL PROTECTED]> wrote:

> Okie.  So if you don't mind can you attach your logs.  What is the split
> policy and what is the size of the region?
>
> Its better we take a look at it and solve the problem if it is a kernel
> problem.
>
> Regards
> Ram
>
> On Fri, Feb 8, 2013 at 6:09 PM, kiran <[EMAIL PROTECTED]> wrote:
>
> > after some searching i found that main reason for regions with same keys
> is
> > splitting and it is the culprit in our case for inconsistency. But I set
> my
> > filesize to a very large size but i am unsure why still splitting is
> > happening
> >
> >
> > On Fri, Feb 8, 2013 at 1:20 PM, kiran <[EMAIL PROTECTED]>
> wrote:
> >
> > > Thanks samar and ramakrishna
> > >
> > > I did use option 2 and deleted /hbase from the zkcli shell. I restarted
> > > the cluster now there are more regions in transition. Will it take some
> > > time to complete since it is a new assignment ?
> > >
> > > My hase version is 0.94.1, and I have a doubt with the property
> > > hbase.hregion.max.filesize. I set it to a very large value of 100GB.
> But
> > > some how table regions are not splitted as per the property.
> > >
> > >
> > > On Fri, Feb 8, 2013 at 12:45 PM, samar kumar <
> [EMAIL PROTECTED]
> > >wrote:
> > >
> > >> May be ./bin/hbase hbck -repairHoles  could be helpful..
> > >>
> > >>
> > >> On 08/02/13 12:38 PM, "Samir Ahmic" <[EMAIL PROTECTED]> wrote:
> > >>
> > >> >Hi, Kiran
> > >> >
> > >> >Welcome to beautiful world of HBase transition states :) . When i
> face
> > >> >RIT issue this are steps that i use to resolve it:
> > >> >
> > >> >1. hbase hbck -fixAssignments (this depends on your version of hbase
> > >> >it can be also just -fix)
> > >> >
> > >> >If you don't have luck with 1. then you will need manual
> intervention:
> > >> >Remove hbase znodes from zookeeper (use hbase zkcli) and options rmr
> > >> >(or delete ) /hbase, and then restart cluster.
> > >> >
> > >> >This should help you resolve RITs.
> > >> >
> > >> >Regards
> > >> >
> > >> >
> > >> >
> > >> >On Fri, Feb 8, 2013 at 7:50 AM, kiran <[EMAIL PROTECTED]>
> > >> wrote:
> > >> >> PENDING_OPEN
> > >> >>
> > >> >>
> > >> >> On Fri, Feb 8, 2013 at 12:16 PM, samar kumar
> > >> >><[EMAIL PROTECTED]>wrote:
> > >> >>
> > >> >>> Can you mention the state of the region.. You can find the details
> > in
> > >> >>>you
> > >> >>> master status page
> > >> >>>
> > >> >>> On 08/02/13 12:09 PM, "kiran" <[EMAIL PROTECTED]>
> wrote:
> > >> >>>
> > >> >>> >We ran the command unassign 'REGIONNAME',true the output is
> > >> >>>"completed in
> > >> >>> >57 sec", but still region is in transition.
> > >> >>> >
> > >> >>> >
> > >> >>> >On Fri, Feb 8, 2013 at 12:05 PM, samar kumar
> > >> >>> ><[EMAIL PROTECTED]>wrote:
> > >> >>> >
> > >> >>> >> Was the unassigning successful ?
> > >> >>> >>
> > >> >>> >> If not you can force it by - unassign 'REGIONNAME', true
> > >> >>> >>
> > >> >>> >> Regards,
> > >> >>> >> Samar
> > >> >>> >>
> > >> >>> >>
> > >> >>> >>
> > >> >>> >> On 08/02/13 12:01 PM, "kiran" <[EMAIL PROTECTED]>
> > wrote:
> > >> >>> >>
> > >> >>> >> >i issued unassign and close_region both but the region is
> still
> > in
> > >> >>> >> >transition also I deleted the .META entry for the region. Do I
> > >> >>>need to
> > >> >>> >> >restart master ?
> > >> >>> >> >
> > >> >>> >> >
> > >> >>> >> >On Fri, Feb 8, 2013 at 11:18 AM, samar kumar
> > >> >>> >> ><[EMAIL PROTECTED]>wrote:
> > >> >>> >> >
> > >> >>> >> >> Regions should never overlap
> > >> >>> >> >> Incase a region is in transition for a long long time, you
> > could
> > >> >>> >> >>possibly
> > >> >>> >> >> force Unassign a region , if you are ok to lose the region.

Thank you
Kiran Sarvabhotla

+
ramkrishna vasudevan 2013-02-08, 07:15
+
ramkrishna vasudevan 2013-02-08, 07:07
+
kiran 2013-02-08, 07:06
+
kiran 2013-02-08, 05:45