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HBase >> mail # user >> 0.90.3


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19:09:23 208.94.1.52 jack@zero:~ $ host 38.99.76.204
204.76.99.38.in-addr.arpa domain name pointer img646.imageshack.us.
19:10:26 208.94.1.52 jack@zero:~ $

This is the name I wanted it to use.  It appears that with current
setup, we can't change hostnames.

-Jack

On Tue, May 24, 2011 at 7:03 PM, Jack Levin <[EMAIL PROTECTED]> wrote:
> "HBase uses the local hostname to self-report it's IP address."
>
> using 'hostname' as authoritative name for regionserver is what caused
> all of the confusion, hostname usually not governed by name resolution
> (/etc/hosts, dns),  some users may call their servers something other
> than whats in dns, so hbase will break for them if they do.  Better
> idea would be to check eth0 for IP, get reverse dns name for it, and
> use that.
>
> just my small two cents.
>
> -Jack
>
> On Tue, May 24, 2011 at 6:02 PM, Jean-Daniel Cryans <[EMAIL PROTECTED]> wrote:
>> Zookeeper doesn't query addresses, it's all done in HBase which in
>> turn stores it in ZK.
>>
>> Also http://hbase.apache.org/book.html#dns
>>
>> J-D
>>
>> On Tue, May 24, 2011 at 4:37 PM, Jack Levin <[EMAIL PROTECTED]> wrote:
>>> figured it out... the /etc/hosts file has ip to name, was used by
>>> zookeeper was *.prod.imageshack.com, while hostname was
>>> imgXX.imageshack.us... use by Regionserver/Master -  Ideally, all
>>> three components should source hostnames form same place, whether its
>>> hostname or /etc/hosts (or dns), etc... it gotta be consistent,
>>> otherwise aliases end up screwing things up and people will end up
>>> guessing why things don't work.
>>>
>>> -Jack
>>>
>>> On Tue, May 24, 2011 at 4:04 PM, Jack Levin <[EMAIL PROTECTED]> wrote:
>>>> img645.prod.imageshack.us and img645.imageshack.us are both point to
>>>> the same IP.
>>>>
>>>> -Jack
>>>>
>>>> On Tue, May 24, 2011 at 3:50 PM, Jack Levin <[EMAIL PROTECTED]> wrote:
>>>>> looks like our balancer is on:
>>>>>
>>>>> hbase(main):001:0> balance_switch true
>>>>> true
>>>>> 0 row(s) in 0.3700 seconds
>>>>>
>>>>> I simply kill PID for RS, and it stays on the list with regions
>>>>> assigned, and master does not know about it.
>>>>>
>>>>> So it still does not work.
>>>>>
>>>>> -Jack
>>>>>
>>>>> On Tue, May 24, 2011 at 3:43 PM, Dave Latham <[EMAIL PROTECTED]> wrote:
>>>>>> Are you using the graceful_stop script?
>>>>>>
>>>>>> In 0.90.3 the bin/graceful_stop.sh script was updated to disable the
>>>>>> master's balancer.  However, it doesn't seem that anything re-enables it, so
>>>>>> if you're using it you need to re-enable it on your own.  See the book for
>>>>>> more details:
>>>>>> http://hbase.apache.org/book.html#decommission
>>>>>>
>>>>>> Dave
>>>>>>
>>>>>> On Tue, May 24, 2011 at 3:33 PM, Jack Levin <[EMAIL PROTECTED]> wrote:
>>>>>>
>>>>>>> just put new hbase version on our test cluster. and been testing it...
>>>>>>> so far if I shutdown an RS, master does not reassign its regions, and
>>>>>>> we remain inconsistent forerver, likewise when new RS is up, it does
>>>>>>> not get regions assigned to it, this is the master log:
>>>>>>>
>>>>>>>
>>>>>>> 2011-05-24 15:30:57,724 DEBUG
>>>>>>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher:
>>>>>>> master:60000-0x1302094818900a4-0x1302094818900a4 Received ZooKeeper
>>>>>>> Event, type=NodeDeleted, state=SyncConnected,
>>>>>>> path=/hbase/rs/img645.prod.imageshack.com,60020,1306276075768
>>>>>>> 2011-05-24 15:30:57,724 INFO
>>>>>>> org.apache.hadoop.hbase.zookeeper.RegionServerTracker: RegionServer
>>>>>>> ephemeral node deleted, processing expiration
>>>>>>> [img645.prod.imageshack.com,60020,1306276075768]
>>>>>>> 2011-05-24 15:30:57,724 INFO
>>>>>>> org.apache.hadoop.hbase.zookeeper.RegionServerTracker: No HServerInfo
>>>>>>> found for img645.prod.imageshack.com,60020,1306276075768
>>>>>>> 2011-05-24 15:30:57,726 DEBUG
>>>>>>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher:
>>>>>>> master:60000-0x1302094818900a4-0x1302094818900a4 Received ZooKeeper
>>>>>>> Event, type=NodeChildrenChanged, state=SyncConnected, path=/hbase/rs