hadoop-zookeeper-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From stack <st...@duboce.net>
Subject Re: Asking zk cluster how its configured and whats this expired about?
Date Tue, 24 Nov 2009 21:47:46 GMT
On Tue, Nov 24, 2009 at 1:33 PM, Patrick Hunt <phunt@apache.org> wrote:

>
> We can definitely add this, please create a JIRA.
>
>
ZOOKEEPER-595



>
>  I was also wondering what this expire stuff in the dump output is about?
>>
>
> Those are the expiration sets, or buckets. Each client session is put into
> a bucket based on when we last heard from it and it's timeout. The leader
> uses this to determine when to expire sessions.
>
> Unfortunately the session ids are being printed in decimal, this is fixed
> in 3.3.0.
>
> Good find, actually this would be useful information for you to monitor in
> determining which of your hbase clients are "falling behind" wrt
> heartbeating.
>
>
Well, are items listed under '2 expire at Tue Nov 24 20:57:06 UTC 2009'
items that have expired or rather, just a logging of when they will expire?
Looking in logs I do not see sessions expiring.

Thanks,
St.Ack



>
>  Here is what I see:
>>
>> $ echo dump|nc X.X.X.X 2181
>> SessionTracker dump:
>> Session Sets (12):
>> 0 expire at Tue Nov 24 20:56:24 UTC 2009:
>> 0 expire at Tue Nov 24 20:56:27 UTC 2009:
>> 0 expire at Tue Nov 24 20:56:30 UTC 2009:
>> 0 expire at Tue Nov 24 20:56:39 UTC 2009:
>> 0 expire at Tue Nov 24 20:56:42 UTC 2009:
>> 0 expire at Tue Nov 24 20:56:45 UTC 2009:
>> 0 expire at Tue Nov 24 20:56:48 UTC 2009:
>> 0 expire at Tue Nov 24 20:57:00 UTC 2009:
>> 0 expire at Tue Nov 24 20:57:03 UTC 2009:
>> 2 expire at Tue Nov 24 20:57:06 UTC 2009:
>>        82512629887926272
>>        154570223919497222
>> 2 expire at Tue Nov 24 20:57:09 UTC 2009:
>>        82512629887926273
>>        10455035895349254
>> 3 expire at Tue Nov 24 20:57:21 UTC 2009:
>>        154570223919497216
>>        10455035895349248
>>        154570223919497221
>>
>> ephemeral nodes dump:
>> Sessions with Ephemerals (4):
>> 0x2524ccbca80000:
>>        /hbase/rs/1259042878053
>> 0x12524ccb9f40000:
>>        /hbase/rs/1259042878032
>> 0x12524ccb9f40001:
>>        /hbase/rs/1259042878106
>> 0x22524ccb9930000:
>>        /hbase/master
>>
>> Thanks,
>> St.Ack
>>
>>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message