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Zookeeper >> mail # user >> force snapshot


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Re: force snapshot
If you have multiple machines in the ensemble you can restart one of the
machine. When the follower restarts and join the quorum it will create a
new snapshot that you can use to troubleshoot the problem.

--
Thawan Kooburat

On 1/10/13 10:30 AM, "Dayal Dilli" <[EMAIL PROTECTED]> wrote:

>Check out this link for information about SnapshotFormatter
>
>http://svn.apache.org/repos/asf/zookeeper/trunk/src/java/main/org/apache/z
>ookeeper/server/SnapshotFormatter.java
>
>Dayal
>________________________________________
>From: S C [[EMAIL PROTECTED]]
>Sent: Wednesday, January 09, 2013 5:37 PM
>To: [EMAIL PROTECTED]
>Subject: RE: force snapshot
>
>Thank you Dayal.
>Where can I get more info on SnapshotFormatter?
>Thanks,SC
>
>> From: [EMAIL PROTECTED]
>> To: [EMAIL PROTECTED]
>> Subject: RE: force snapshot
>> Date: Wed, 9 Jan 2013 18:18:17 +0000
>>
>> Your understanding is correct. snapCount is a system property with
>>default value is 100,000. You can also set it in the zookeeper
>>configuration file (conf/zoo.cfg) by using the parameter "snapCount".
>>
>> I don't understand exactly what you mean by adhoc snapshot. From my
>>understanding, if you want to take a snapshot early/more frequently
>>reduce the value of snapCount. Also, you can use SnapshotFormatter to
>>get the data in snapshot in plain text and analyze it.
>>
>> Dayal
>> ________________________________________
>> From: S C [[EMAIL PROTECTED]]
>> Sent: Wednesday, January 09, 2013 1:00 PM
>> To: [EMAIL PROTECTED]
>> Subject: RE: force snapshot
>>
>> Dayal,
>> I believe you pointed the threshold. Thank you. Is there a way to take
>>an adhoc snapshot for troubleshooting / analysis of any issues?
>> Upon looking for snapCount, I came across "zookeeper.snapCount" a
>>system property with default value of 100,000.  Is my understanding
>>correct?
>>
>> Thanks,SC
>>
>> > From: [EMAIL PROTECTED]
>> > To: [EMAIL PROTECTED]
>> > Subject: RE: force snapshot
>> > Date: Tue, 8 Jan 2013 14:35:02 +0000
>> >
>> > Change the value of snapCount in conf/zoo.cfg
>> >
>> > The default is 10,000.
>> > ________________________________________
>> > From: challa asf [[EMAIL PROTECTED]]
>> > Sent: Monday, January 07, 2013 5:20 PM
>> > To: [EMAIL PROTECTED]
>> > Subject: force snapshot
>> >
>> > I am new to Zookeeper. Couple of questions.
>> > What is the threshold before ZK takes a snapshot?Is there a way to
>>force ZK to snapshot for troubleshooting or for any Operational reasons?
>> > Thanks,Challa
>> >
>>
>