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HBase >> mail # user >> hbase time skew


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Yuling_C@... 2013-03-15, 22:49
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Ted Yu 2013-03-15, 22:53
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Yuling_C@... 2013-03-15, 23:26
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Ted Yu 2013-03-15, 23:28
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Yuling_C@... 2013-03-15, 23:50
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Ted Yu 2013-03-16, 00:07
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Ted Yu 2013-03-16, 00:12
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Yuling_C@... 2013-03-16, 00:24
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Ted Yu 2013-03-16, 00:28
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Re: hbase time skew
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 <[EMAIL PROTECTED]> 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, <[EMAIL PROTECTED]> 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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Kevin Odell 2013-03-16, 12:48
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Yuling_C@... 2013-03-18, 18:39
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Michel Segel 2013-03-18, 21:29
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Yuling_C@... 2013-03-18, 22:06