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From Michel Segel <michael_se...@hotmail.com>
Subject Re: hbase time skew
Date Sat, 16 Mar 2013 01:56:30 GMT
Create an ntp server local to the cluster? This will eliminate the skew in the first place.

Sent from a remote device. Please excuse any typos...

Mike Segel

On Mar 15, 2013, at 3:53 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Are you using 0.94.x ?
> 
> If so, see the following:
> 
>    maxSkew = c.getLong("hbase.master.maxclockskew", 30000);
>    warningSkew = c.getLong("hbase.master.warningclockskew", 10000);
> ./src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
> 
> Cheers
> 
> On Fri, Mar 15, 2013 at 3:49 PM, <Yuling_C@dell.com> wrote:
> 
>> Hi,
>> 
>> We recently encountered the issue that HBase tables got into a state that
>> was not disabled nor enabled. We found that the root cause was the linux
>> clock skewed more than 5 hours. I googled and understood that hbase can
>> only  handle about a couple of seconds time skew. We were wondering if
>> there's any configuration in HBase that we can do so as to increase the
>> number of seconds that hbase could handle?
>> 
>> Thanks very much,
>> 
>> YuLing
>> 

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