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From Jack Levin <magn...@gmail.com>
Subject Re: 0.90.3
Date Tue, 24 May 2011 23:37:04 GMT
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 <magnito@gmail.com> 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 <magnito@gmail.com> 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 <latham@davelink.net> 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 <magnito@gmail.com> 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
>>>> 2011-05-24 15:31:03,330 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher:
>>>> master:60000-0x1302094818900a4-0x1302094818900a4 Received ZooKeeper
>>>> Event, type=NodeChildrenChanged, state=SyncConnected, path=/hbase/rs
>>>> 2011-05-24 15:31:03,338 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZKUtil:
>>>> master:60000-0x1302094818900a4-0x1302094818900a4 Retrieved 32 byte(s)
>>>> of data from znode
>>>> /hbase/rs/img645.prod.imageshack.com,60020,1306276262774 and set
>>>> watcher; img645.prod.imageshack.com:60020
>>>> 2011-05-24 15:31:03,350 INFO
>>>> org.apache.hadoop.hbase.master.ServerManager: Server start rejected;
>>>> we already have img645.imageshack.us:60020 registered;
>>>> existingServer=serverName=img645.imageshack.us,60020,1306276075768,
>>>> load=(requests=0, regions=0, usedHeap=40, maxHeap=3995),
>>>> newServer=serverName=img645.imageshack.us,60020,1306276262774,
>>>> load=(requests=0, regions=0, usedHeap=23, maxHeap=3995)
>>>> 2011-05-24 15:31:03,350 INFO
>>>> org.apache.hadoop.hbase.master.ServerManager: Triggering server
>>>> recovery; existingServer img645.imageshack.us,60020,1306276075768
>>>> looks stale
>>>> 2011-05-24 15:31:03,353 DEBUG
>>>> org.apache.hadoop.hbase.master.ServerManager:
>>>> Added=img645.imageshack.us,60020,1306276075768 to dead servers,
>>>> submitted shutdown handler to be executed, root=false, meta=false
>>>> 2011-05-24 15:31:03,353 INFO
>>>> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler:
>>>> Splitting logs for img645.imageshack.us,60020,1306276075768
>>>> 2011-05-24 15:31:04,348 INFO
>>>> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler:
>>>> Reassigning 0 region(s) that img645.imageshack.us,60020,1306276075768
>>>> was carrying (skipping 0 regions(s) that are already in transition)
>>>> 2011-05-24 15:31:04,348 INFO
>>>> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler: Finished
>>>> processing of shutdown of img645.imageshack.us,60020,1306276075768
>>>> 2011-05-24 15:31:06,333 DEBUG
>>>> org.apache.hadoop.hbase.master.ServerManager: Server
>>>> img645.imageshack.us,60020,1306276262774 came back up, removed it from
>>>> the dead servers list
>>>> 2011-05-24 15:31:06,333 INFO
>>>> org.apache.hadoop.hbase.master.ServerManager: Registering
>>>> server=img645.imageshack.us,60020,1306276262774, regionCount=0,
>>>> userLoad=false
>>>> 2011-05-24 15:31:49,890 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZKUtil: hconnection opening
>>>> connection to ZooKeeper with ensemble (img648:2181)
>>>> 2011-05-24 15:31:49,890 INFO org.apache.zookeeper.ZooKeeper:
>>>> Initiating client connection, connectString=img648:2181
>>>> sessionTimeout=180000 watcher=hconnection
>>>> 2011-05-24 15:31:49,891 INFO org.apache.zookeeper.ClientCnxn: Opening
>>>> socket connection to server img648/38.99.76.205:2181
>>>> 2011-05-24 15:31:49,892 INFO org.apache.zookeeper.ClientCnxn: Socket
>>>> connection established to img648/38.99.76.205:2181, initiating session
>>>> 2011-05-24 15:31:49,893 INFO org.apache.zookeeper.ClientCnxn: Session
>>>> establishment complete on server img648/38.99.76.205:2181, sessionid =
>>>> 0x13024216e690004, negotiated timeout = 180000
>>>> 2011-05-24 15:31:49,894 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher: hconnection
>>>> Received ZooKeeper Event, type=None, state=SyncConnected, path=null
>>>> 2011-05-24 15:31:49,895 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher:
>>>> hconnection-0x13024216e690004 connected
>>>> 2011-05-24 15:31:49,896 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZKUtil:
>>>> hconnection-0x13024216e690004 Set watcher on existing znode
>>>> /hbase/master
>>>> 2011-05-24 15:31:49,896 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZKUtil:
>>>> hconnection-0x13024216e690004 Retrieved 32 byte(s) of data from znode
>>>> /hbase/master and set watcher; img648.prod.imageshack.com:60000
>>>> 2011-05-24 15:31:49,897 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZKUtil:
>>>> hconnection-0x13024216e690004 Set watcher on existing znode
>>>> /hbase/root-region-server
>>>> 2011-05-24 15:31:49,897 DEBUG
>>>> org.apache.hadoop.hbase.zookeeper.ZKUtil:
>>>> hconnection-0x13024216e690004 Retrieved 26 byte(s) of data from znode
>>>> /hbase/root-region-server and set watcher; img731.imageshack.us:60020
>>>> 2011-05-24 15:31:49,900 DEBUG
>>>> org.apache.hadoop.hbase.client.MetaScanner: Scanning .META. starting
>>>> at row= for max=2147483647 rows
>>>> 2011-05-24 15:31:49,900 DEBUG
>>>>
>>>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
>>>> Lookedup root region location,
>>>>
>>>> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@26f50154
>>>> ;
>>>> hsa=img731.imageshack.us:60020
>>>> 2011-05-24 15:31:49,913 DEBUG
>>>>
>>>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
>>>> Cached location for .META.,,1.1028785192 is img654.imageshack.us:60020
>>>> 2011-05-24 15:31:50,061 INFO
>>>>
>>>> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
>>>> Closed zookeeper sessionid=0x13024216e690004
>>>> 2011-05-24 15:31:50,063 INFO org.apache.zookeeper.ZooKeeper: Session:
>>>> 0x13024216e690004 closed
>>>> 2011-05-24 15:31:50,063 INFO org.apache.zookeeper.ClientCnxn:
>>>> EventThread shut down
>>>>
>>>> Please help :)
>>>>
>>>> -Jack
>>>>
>>>
>>
>

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