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From Federico Gaule <fga...@despegar.com>
Subject Re: RPC - Queue Time when handlers are all waiting
Date Tue, 10 Dec 2013 17:31:07 GMT
I thought we could, somehow, check queue items. Replication Handlers status
are waiting most of the time:
Here's a sample of 1 minute, refreshing every second. Allways got same
output while RpcQueueTime_avg_time was reporting activity (Handlers 29...0
were all WAITING).:

hbase@pam-hb-replica-b-00:~$ jstack 15585 | grep 'IPC Server handler' -A 20
| egrep 'RUNNABLE|BLOCKED' -B 1 -A 20
"IPC Server listener on 60020" daemon prio=10 tid=0x00007f3658189000
nid=0x3d3a runnable [0x00007f363ca68000]
   java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
- locked <0x000000070030f3a8> (a sun.nio.ch.Util$2)
- locked <0x000000070030f390> (a java.util.Collections$UnmodifiableSet)
- locked <0x00000007003d31b8> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:84)
at
org.apache.hadoop.hbase.ipc.HBaseServer$Listener.run(HBaseServer.java:636)

Thanks!



2013/12/10 Jean-Marc Spaggiari <jean-marc@spaggiari.org>

> You can do something like (types it in the email, did not tested it):
>
> for i in {1..240}; do wget "
> http://MASTER_IP:6001/master-status?format=json&filter=handler"; done
>
> That will create a 240 JSon files that you can look at to see handlers
> status. Also, you this same page, you should see you 30 replication
> handlers as well as you 30 "standard" handlers.
>
> Last, I will recommend you to move back to less replication handlers since
> I don't think you need 30.
>
> JM
>
>
> 2013/12/10 Federico Gaule <fgaule@despegar.com>
>
> > There is any coprocessor on slaves, neither master.
> > How can i dump RPC queues?
> >
> > Thanks!
> >
> >
> > 2013/12/10 Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> >
> > > Here are the properties from the code regarding the handlers.
> > > hbase.master.handler.count
> > > hbase.regionserver.handler.count
> > > hbase.regionserver.replication.handler.count
> > > hbase.regionserver.metahandler.count
> > >
> > > Do you have any coprocessor configured on your slave cluster? Ar eyou
> > able
> > > to dump the RPC queues every 5 seconds to see what is in?
> > >
> > > JM
> > >
> > >
> > >
> > > 2013/12/10 Federico Gaule <fgaule@despegar.com>
> > >
> > > > I'm using hbase 0.94.13.
> > > > hbase.regionserver.metahandler.count is a more intuituve name for
> those
> > > > handlers :)
> > > >
> > > >
> > > > 2013/12/10 Nicolas Liochon <nkeywal@gmail.com>
> > > >
> > > > > It's hbase.regionserver.metahandler.count. Not sure it causes the
> > issue
> > > > > you're facing, thought. What's your HBase version?
> > > > >
> > > > >
> > > > > On Tue, Dec 10, 2013 at 1:21 PM, Federico Gaule <
> fgaule@despegar.com
> > >
> > > > > wrote:
> > > > >
> > > > > > There is another set of handler we haven't customized "PRI IPC"
> > > > (priority
> > > > > > ?). What are those handlers used for? What is the property used
> to
> > > > > increase
> > > > > > the number of handlers?
> > > > hbase.regionserver.custom.priority.handler.count
> > > > > ?
> > > > > >
> > > > > > Thanks!
> > > > > >
> > > > > >
> > > > > > 2013/12/10 Federico Gaule <fgaule@despegar.com>
> > > > > >
> > > > > > > I've increased hbase.regionserver.replication.handler.count 10x
> > > (30)
> > > > > but
> > > > > > > nothing have changed. rpc.metrics.RpcQueueTime_avg_time still
> > shows
> > > > > > > activity :(
> > > > > > >
> > > > > > > Mon Dec 09 14:04:10 EST 2013REPL IPC Server handler 29 on 60000
> > > > WAITING
> > > > > > > (since 16hrs, 58mins, 56sec ago)Waiting for a call (since
> 16hrs,
> > > > > 58mins,
> > > > > > > 56sec ago) Mon Dec 09 14:04:10 EST 2013 REPL IPC Server handler
> > 28
> > > on
> > > > > > > 60000WAITING (since 16hrs, 58mins, 56sec ago) Waiting for a
> call
> > > > (since
> > > > > > > 16hrs, 58mins, 56sec ago)Mon Dec 09 14:04:10 EST 2013 REPL IPC
> > > Server
> > > > > > > handler 27 on 60000 WAITING (since 16hrs, 58mins, 56sec
> > ago)Waiting
> > > > > for a
> > > > > > > call (since 16hrs, 58mins, 56sec ago) Mon Dec 09 14:04:10 EST
> > 2013
> > > > REPL
> > > > > > > IPC Server handler 26 on 60000WAITING (since 16hrs, 58mins,
> 56sec
> > > > > > ago)Waiting for a call (since 16hrs, 58mins, 56sec ago)
> > > > > > > ... ...
> > > > > > > ...
> > > > > > > ...
> > > > > > > Mon Dec 09 14:04:10 EST 2013 REPL IPC Server handler 2 on
> > > > 60000WAITING
> > > > > > > (since 16hrs, 58mins, 56sec ago) Waiting for a call (since
> 16hrs,
> > > > > 58mins,
> > > > > > > 56sec ago)Mon Dec 09 14:04:10 EST 2013 REPL IPC Server handler
> 1
> > on
> > > > > > 60000WAITING (since 16hrs, 58mins, 56sec ago)Waiting
> > > > > > > for a call (since 16hrs, 58mins, 56sec ago) Mon Dec 09 14:04:10
> > EST
> > > > > > 2013REPL IPC Server handler 0 on 60000WAITING
> > > > > > > (since 16hrs, 58mins, 56sec ago) Waiting for a call (since
> 16hrs,
> > > > > 58mins,
> > > > > > > 56sec ago)
> > > > > > > Thanks JM
> > > > > > >
> > > > > > >
> > > > > > > 2013/12/9 Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> > > > > > >
> > > > > > >> Yes, default value is 3 in 0.94.14. If you have not changed
> it,
> > > then
> > > > > > it's
> > > > > > >> still 3.
> > > > > > >>
> > > > > > >> conf.getInt("hbase.regionserver.replication.handler.count",
> 3);
> > > > > > >>
> > > > > > >> Keep us posted on the results.
> > > > > > >>
> > > > > > >> JM
> > > > > > >>
> > > > > > >>
> > > > > > >> 2013/12/9 Federico Gaule <fgaule@despegar.com>
> > > > > > >>
> > > > > > >> > Default value for
> hbase.regionserver.replication.handler.count
> > > > > (can't
> > > > > > >> find
> > > > > > >> > what is the default, Is it 3?)
> > > > > > >> > I'll do a try increasing that property
> > > > > > >> >
> > > > > > >> > Fri Dec 06 12:44:12 EST 2013REPL IPC Server handler 2 on
> > > > > 60020WAITING
> > > > > > >> > (since 8sec ago)Waiting for a call (since 8sec ago)Fri Dec
> 06
> > > > > 12:44:12
> > > > > > >> EST
> > > > > > >> > 2013REPL IPC Server handler 1 on 60020WAITING (since 8sec
> > > > > ago)Waiting
> > > > > > >> for a
> > > > > > >> > call (since 8sec ago)Fri Dec 06 12:44:12 EST 2013REPL IPC
> > Server
> > > > > > >> handler 0
> > > > > > >> > on 60020WAITING (since 2sec ago)Waiting for a call (since
> 2sec
> > > > ago)
> > > > > > >> > Thanks JM
> > > > > > >> >
> > > > > > >> >
> > > > > > >> > 2013/12/9 Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> > > > > > >> >
> > > > > > >> > > For replications, the handlers used on the salve cluster
> are
> > > > > > >> configured
> > > > > > >> > by
> > > > > > >> > > hbase.regionserver.replication.handler.count. What value
> do
> > > you
> > > > > have
> > > > > > >> for
> > > > > > >> > > this property?
> > > > > > >> > >
> > > > > > >> > > JM
> > > > > > >> > >
> > > > > > >> > >
> > > > > > >> > > 2013/12/9 Federico Gaule <fgaule@despegar.com>
> > > > > > >> > >
> > > > > > >> > > > Here is a thread saying what i think it should be (
> > > > > > >> > > >
> > > > > >
> http://grokbase.com/t/hbase/user/13bmndq53k/average-rpc-queue-time
> > )
> > > > > > >> > > >
> > > > > > >> > > > "The RpcQueueTime metrics are a measurement of how long
> > > > > individual
> > > > > > >> > calls
> > > > > > >> > > > stay in this queued state. If your handlers were never
> > 100%
> > > > > > >> occupied,
> > > > > > >> > > this
> > > > > > >> > > > value would be 0. An average of 3 hours is concerning,
> it
> > > > > > basically
> > > > > > >> > means
> > > > > > >> > > > that when a call comes into the RegionServer it takes on
> > > > > average 3
> > > > > > >> > hours
> > > > > > >> > > to
> > > > > > >> > > > start processing, because handlers are all occupied for
> > that
> > > > > > amount
> > > > > > >> of
> > > > > > >> > > > time."
> > > > > > >> > > >
> > > > > > >> > > > Is that correct?
> > > > > > >> > > >
> > > > > > >> > > >
> > > > > > >> > > >
> > > > > > >> > > > 2013/12/9 Federico Gaule <fgaule@despegar.com>
> > > > > > >> > > >
> > > > > > >> > > > > Correct me if i'm wrong, but, Queues should be used
> only
> > > > when
> > > > > > >> > handlers
> > > > > > >> > > > are
> > > > > > >> > > > > all busy, shouldn't it?.
> > > > > > >> > > > > If that's true, i don't get why there is activity
> > related
> > > to
> > > > > > >> queues.
> > > > > > >> > > > >
> > > > > > >> > > > > Maybe i'm missing some piece of knowledge about when
> > hbase
> > > > is
> > > > > > >> using
> > > > > > >> > > > queues
> > > > > > >> > > > > :)
> > > > > > >> > > > >
> > > > > > >> > > > > Thanks
> > > > > > >> > > > >
> > > > > > >> > > > >
> > > > > > >> > > > > 2013/12/9 Jean-Marc Spaggiari <
> jean-marc@spaggiari.org>
> > > > > > >> > > > >
> > > > > > >> > > > >> There might be something I'm missing ;)
> > > > > > >> > > > >>
> > > > > > >> > > > >> On cluster B, as you said, never more than 50% of
> your
> > > > > handlers
> > > > > > >> are
> > > > > > >> > > > used.
> > > > > > >> > > > >> Your Ganglia metrics are showing that there is
> > activities
> > > > > (num
> > > > > > >> ops
> > > > > > >> > is
> > > > > > >> > > > >> increasing), which is correct.
> > > > > > >> > > > >>
> > > > > > >> > > > >> Can you please confirm what you think is wrong from
> > your
> > > > > > charts?
> > > > > > >> > > > >>
> > > > > > >> > > > >> Thanks,
> > > > > > >> > > > >>
> > > > > > >> > > > >> JM
> > > > > > >> > > > >>
> > > > > > >> > > > >>
> > > > > > >> > > > >> 2013/12/9 Federico Gaule <fgaule@despegar.com>
> > > > > > >> > > > >>
> > > > > > >> > > > >> > Hi JM,
> > > > > > >> > > > >> > Cluster B is only receiving replication data
> > (writes),
> > > > but
> > > > > > >> > handlers
> > > > > > >> > > > are
> > > > > > >> > > > >> > waiting most of the time (never 50% of them are
> > used).
> > > > As i
> > > > > > >> have
> > > > > > >> > > read,
> > > > > > >> > > > >> RPC
> > > > > > >> > > > >> > queue is only used when handlers are all waiting,
> > does
> > > it
> > > > > > count
> > > > > > >> > for
> > > > > > >> > > > >> > replication as well?
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > Thanks!
> > > > > > >> > > > >> >
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > 2013/12/9 Jean-Marc Spaggiari <
> > jean-marc@spaggiari.org
> > > >
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > > Hi,
> > > > > > >> > > > >> > >
> > > > > > >> > > > >> > > When you say that B doesn't get any read/write
> > > > operation,
> > > > > > >> does
> > > > > > >> > it
> > > > > > >> > > > mean
> > > > > > >> > > > >> > you
> > > > > > >> > > > >> > > stopped the replication? Or B is still getting
> the
> > > > write
> > > > > > >> > > operations
> > > > > > >> > > > >> from
> > > > > > >> > > > >> > A
> > > > > > >> > > > >> > > because of the replication? If so, that's why you
> > RPC
> > > > > queue
> > > > > > >> is
> > > > > > >> > > > used...
> > > > > > >> > > > >> > >
> > > > > > >> > > > >> > > JM
> > > > > > >> > > > >> > >
> > > > > > >> > > > >> > >
> > > > > > >> > > > >> > > 2013/12/9 Federico Gaule <fgaule@despegar.com>
> > > > > > >> > > > >> > >
> > > > > > >> > > > >> > > > Not much information in RS logs (DEBUG level
> set
> > to
> > > > > > >> > > > >> > > > org.apache.hadoop.hbase). Here is a sample of
> one
> > > > > > >> regionserver
> > > > > > >> > > > >> showing
> > > > > > >> > > > >> > > > increasing rpc.metrics.RpcQueueTime_num_ops and
> > > > > > >> > > > >> > > > rpc.metrics.RpcQueueTime_avg_time
> > > > > > >> > > > >> > > > activity:
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > 2013-12-09 08:09:10,699 DEBUG
> > > > > > >> > > > >> > > > org.apache.hadoop.hbase.io.hfile.LruBlockCache:
> > > > Stats:
> > > > > > >> > > total=23.14
> > > > > > >> > > > >> MB,
> > > > > > >> > > > >> > > > free=2.73 GB, max=2.75 GB, blocks=0,
> > > > > accesses=122442151,
> > > > > > >> > > > >> > hits=122168501,
> > > > > > >> > > > >> > > > hitRatio=99.77%, , cachingAccesses=122192927,
> > > > > > >> > > > cachingHits=122162378,
> > > > > > >> > > > >> > > > cachingHitsRatio=99.97%, , evictions=0,
> > > evicted=6768,
> > > > > > >> > > > >> > > > evictedPerRun=Infinity
> > > > > > >> > > > >> > > > 2013-12-09 08:09:11,396 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 1
> > > > > > >> > > > >> > > > 2013-12-09 08:09:14,979 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 2
> > > > > > >> > > > >> > > > 2013-12-09 08:09:16,016 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 1
> > > > > > >> > > > >> > > > ...
> > > > > > >> > > > >> > > > 2013-12-09 08:14:07,659 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 1
> > > > > > >> > > > >> > > > 2013-12-09 08:14:08,713 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 3
> > > > > > >> > > > >> > > > 2013-12-09 08:14:10,699 DEBUG
> > > > > > >> > > > >> > > > org.apache.hadoop.hbase.io.hfile.LruBlockCache:
> > > > Stats:
> > > > > > >> > > total=23.14
> > > > > > >> > > > >> MB,
> > > > > > >> > > > >> > > > free=2.73 GB, max=2.75 GB, blocks=0,
> > > > > accesses=122442151,
> > > > > > >> > > > >> > hits=122168501,
> > > > > > >> > > > >> > > > hitRatio=99.77%, , cachingAccesses=122192927,
> > > > > > >> > > > cachingHits=122162378,
> > > > > > >> > > > >> > > > cachingHitsRatio=99.97%, , evictions=0,
> > > evicted=6768,
> > > > > > >> > > > >> > > > evictedPerRun=Infinity
> > > > > > >> > > > >> > > > 2013-12-09 08:14:12,711 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 1
> > > > > > >> > > > >> > > > 2013-12-09 08:14:14,778 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 3
> > > > > > >> > > > >> > > > ...
> > > > > > >> > > > >> > > > 2013-12-09 08:15:09,199 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 3
> > > > > > >> > > > >> > > > 2013-12-09 08:15:12,243 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 2
> > > > > > >> > > > >> > > > 2013-12-09 08:15:22,086 INFO
> > > > > > >> > > > >> > > >
> > > > > > >> > >
> > > > org.apache.hadoop.hbase.replication.regionserver.ReplicationSink:
> > > > > > >> > > > >> Total
> > > > > > >> > > > >> > > > replicated: 2
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > Thanks
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > 2013/12/7 Bharath Vissapragada <
> > > > bharathv@cloudera.com>
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > > I'd look into the RS logs to see whats
> > happening
> > > > > there.
> > > > > > >> > > > Difficult
> > > > > > >> > > > >> to
> > > > > > >> > > > >> > > > guess
> > > > > > >> > > > >> > > > > from the given information!
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > > > On Sat, Dec 7, 2013 at 8:52 PM, Federico
> Gaule
> > <
> > > > > > >> > > > >> fgaule@despegar.com>
> > > > > > >> > > > >> > > > > wrote:
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > > > > Any clue?
> > > > > > >> > > > >> > > > > > El dic 5, 2013 9:49 a.m., "Federico Gaule"
> <
> > > > > > >> > > > fgaule@despegar.com
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > > > > escribió:
> > > > > > >> > > > >> > > > > >
> > > > > > >> > > > >> > > > > > > Hi,
> > > > > > >> > > > >> > > > > > >
> > > > > > >> > > > >> > > > > > > I have 2 clusters, Master (a) - Slave (b)
> > > > > > >> replication.
> > > > > > >> > > > >> > > > > > > B doesn't have client write or reads, all
> > > > > handlers
> > > > > > >> (100)
> > > > > > >> > > are
> > > > > > >> > > > >> > > waiting
> > > > > > >> > > > >> > > > > but
> > > > > > >> > > > >> > > > > > > rpc.metrics.RpcQueueTime_num_ops and
> > > > > > >> > > > >> > > > rpc.metrics.RpcQueueTime_avg_time
> > > > > > >> > > > >> > > > > > reports
> > > > > > >> > > > >> > > > > > > to be rpc calls to be queued.
> > > > > > >> > > > >> > > > > > > There are some screenshots below to show
> > > > ganglia
> > > > > > >> > metrics.
> > > > > > >> > > > How
> > > > > > >> > > > >> is
> > > > > > >> > > > >> > > this
> > > > > > >> > > > >> > > > > > > behaviour explained? I have looked for
> > > metrics
> > > > > > >> > > > specifications
> > > > > > >> > > > >> but
> > > > > > >> > > > >> > > > can't
> > > > > > >> > > > >> > > > > > > find much information.
> > > > > > >> > > > >> > > > > > >
> > > > > > >> > > > >> > > > > > > Handlers
> > > > > > >> > > > >> > > > > > > http://i42.tinypic.com/242ssoz.png
> > > > > > >> > > > >> > > > > > >
> > > > > > >> > > > >> > > > > > > NumOps
> > > > > > >> > > > >> > > > > > > http://tinypic.com/r/of2c8k/5
> > > > > > >> > > > >> > > > > > >
> > > > > > >> > > > >> > > > > > > AvgTime
> > > > > > >> > > > >> > > > > > > http://tinypic.com/r/2lsvg5w/5
> > > > > > >> > > > >> > > > > > >
> > > > > > >> > > > >> > > > > > > Cheers
> > > > > > >> > > > >> > > > > > >
> > > > > > >> > > > >> > > > > >
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > > > --
> > > > > > >> > > > >> > > > > Bharath Vissapragada
> > > > > > >> > > > >> > > > > <http://www.cloudera.com>
> > > > > > >> > > > >> > > > >
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > --
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > [image:
> > > > > > >> > > > >>
> > > > > http://www.despegar.com/galeria/images/promos/isodespegar1.png
> > > > > > >> > > > >> > ]
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > *Ing. Federico Gaule*
> > > > > > >> > > > >> > > > Líder Técnico - PAM <
> hotels-pam-it@despegar.com>
> > > > > > >> > > > >> > > > Av. Corrientes 746 - Piso 9 - C.A.B.A.
> (C1043AAU)
> > > > > > >> > > > >> > > > tel. +54 (11) 4894-3500
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > *[image: Seguinos en Twitter!] <
> > > > > > >> > > http://twitter.com/#!/despegarar>
> > > > > > >> > > > >> > > [image:
> > > > > > >> > > > >> > > > Seguinos en Facebook!] <
> > > > > http://www.facebook.com/despegar
> > > > > > >
> > > > > > >> > > [image:
> > > > > > >> > > > >> > > Seguinos
> > > > > > >> > > > >> > > > en YouTube!] <http://www.youtube.com/Despegar
> >*
> > > > > > >> > > > >> > > > *Despegar.com, Inc. *
> > > > > > >> > > > >> > > > El mejor precio para tu viaje.
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > > > Este mensaje es confidencial y puede contener
> > > > > > información
> > > > > > >> > > > amparada
> > > > > > >> > > > >> por
> > > > > > >> > > > >> > > el
> > > > > > >> > > > >> > > > secreto profesional.
> > > > > > >> > > > >> > > > Si usted ha recibido este e-mail por error, por
> > > favor
> > > > > > >> > > > >> comuníquenoslo
> > > > > > >> > > > >> > > > inmediatamente respondiendo a este e-mail y
> luego
> > > > > > >> > eliminándolo
> > > > > > >> > > de
> > > > > > >> > > > >> su
> > > > > > >> > > > >> > > > sistema.
> > > > > > >> > > > >> > > > El contenido de este mensaje no deberá ser
> > copiado
> > > > ni
> > > > > > >> > > divulgado a
> > > > > > >> > > > >> > > ninguna
> > > > > > >> > > > >> > > > persona.
> > > > > > >> > > > >> > > >
> > > > > > >> > > > >> > >
> > > > > > >> > > > >> >
> > > > > > >> > > > >> >
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > --
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > [image:
> > > > > > >> > > >
> > > > http://www.despegar.com/galeria/images/promos/isodespegar1.png]
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > *Ing. Federico Gaule*
> > > > > > >> > > > >> > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > > > >> > > > >> > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > > > >> > > > >> > tel. +54 (11) 4894-3500
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > *[image: Seguinos en Twitter!] <
> > > > > > >> http://twitter.com/#!/despegarar>
> > > > > > >> > > > >> [image:
> > > > > > >> > > > >> > Seguinos en Facebook!] <
> > > http://www.facebook.com/despegar
> > > > >
> > > > > > >> [image:
> > > > > > >> > > > >> Seguinos
> > > > > > >> > > > >> > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > > > >> > > > >> > *Despegar.com, Inc. *
> > > > > > >> > > > >> > El mejor precio para tu viaje.
> > > > > > >> > > > >> >
> > > > > > >> > > > >> > Este mensaje es confidencial y puede contener
> > > > información
> > > > > > >> > amparada
> > > > > > >> > > > por
> > > > > > >> > > > >> el
> > > > > > >> > > > >> > secreto profesional.
> > > > > > >> > > > >> > Si usted ha recibido este e-mail por error, por
> favor
> > > > > > >> > > comuníquenoslo
> > > > > > >> > > > >> > inmediatamente respondiendo a este e-mail y luego
> > > > > > >> eliminándolo de
> > > > > > >> > > su
> > > > > > >> > > > >> > sistema.
> > > > > > >> > > > >> > El contenido de este mensaje no deberá ser copiado
> > ni
> > > > > > >> divulgado a
> > > > > > >> > > > >> ninguna
> > > > > > >> > > > >> > persona.
> > > > > > >> > > > >> >
> > > > > > >> > > > >>
> > > > > > >> > > > >
> > > > > > >> > > > >
> > > > > > >> > > > >
> > > > > > >> > > > > --
> > > > > > >> > > > >
> > > > > > >> > > > > [image:
> > > > > > >> >
> > http://www.despegar.com/galeria/images/promos/isodespegar1.png
> > > > > > >> > > ]
> > > > > > >> > > > >
> > > > > > >> > > > > *Ing. Federico Gaule*
> > > > > > >> > > > > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > > > >> > > > >
> > > > > > >> > > > > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > > > >> > > > > tel. +54 (11) 4894-3500
> > > > > > >> > > > >
> > > > > > >> > > > >
> > > > > > >> > > > > *[image: Seguinos en Twitter!] <
> > > > > > http://twitter.com/#!/despegarar>
> > > > > > >> > > > [image:
> > > > > > >> > > > > Seguinos en Facebook!] <
> > http://www.facebook.com/despegar>
> > > > > > [image:
> > > > > > >> > > > Seguinos
> > > > > > >> > > > > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > > > >> > > > > *Despegar.com, Inc. *
> > > > > > >> > > > >
> > > > > > >> > > > > El mejor precio para tu viaje.
> > > > > > >> > > > >
> > > > > > >> > > > > Este mensaje es confidencial y puede contener
> > información
> > > > > > >> amparada
> > > > > > >> > por
> > > > > > >> > > > el
> > > > > > >> > > > > secreto profesional.
> > > > > > >> > > > > Si usted ha recibido este e-mail por error, por favor
> > > > > > >> comuníquenoslo
> > > > > > >> > > > > inmediatamente respondiendo a este e-mail y luego
> > > > > eliminándolo
> > > > > > >> de su
> > > > > > >> > > > > sistema.
> > > > > > >> > > > > El contenido de este mensaje no deberá ser copiado ni
> > > > > > divulgado a
> > > > > > >> > > > ninguna
> > > > > > >> > > > > persona.
> > > > > > >> > > > >
> > > > > > >> > > >
> > > > > > >> > > >
> > > > > > >> > > >
> > > > > > >> > > > --
> > > > > > >> > > >
> > > > > > >> > > > [image:
> > > > > > >>
> http://www.despegar.com/galeria/images/promos/isodespegar1.png
> > > > > > >> > ]
> > > > > > >> > > >
> > > > > > >> > > > *Ing. Federico Gaule*
> > > > > > >> > > > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > > > >> > > > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > > > >> > > > tel. +54 (11) 4894-3500
> > > > > > >> > > >
> > > > > > >> > > > *[image: Seguinos en Twitter!] <
> > > > > http://twitter.com/#!/despegarar>
> > > > > > >> > > [image:
> > > > > > >> > > > Seguinos en Facebook!] <
> http://www.facebook.com/despegar>
> > > > > [image:
> > > > > > >> > > Seguinos
> > > > > > >> > > > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > > > >> > > > *Despegar.com, Inc. *
> > > > > > >> > > > El mejor precio para tu viaje.
> > > > > > >> > > >
> > > > > > >> > > > Este mensaje es confidencial y puede contener
> información
> > > > > > amparada
> > > > > > >> por
> > > > > > >> > > el
> > > > > > >> > > > secreto profesional.
> > > > > > >> > > > Si usted ha recibido este e-mail por error, por favor
> > > > > > >> comuníquenoslo
> > > > > > >> > > > inmediatamente respondiendo a este e-mail y luego
> > > > eliminándolo
> > > > > de
> > > > > > >> su
> > > > > > >> > > > sistema.
> > > > > > >> > > > El contenido de este mensaje no deberá ser copiado ni
> > > > > divulgado a
> > > > > > >> > > ninguna
> > > > > > >> > > > persona.
> > > > > > >> > > >
> > > > > > >> > >
> > > > > > >> >
> > > > > > >> >
> > > > > > >> >
> > > > > > >> > --
> > > > > > >> >
> > > > > > >> > [image:
> > > > > > http://www.despegar.com/galeria/images/promos/isodespegar1.png]
> > > > > > >> >
> > > > > > >> > *Ing. Federico Gaule*
> > > > > > >> > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > > > >> > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > > > >> > tel. +54 (11) 4894-3500
> > > > > > >> >
> > > > > > >> > *[image: Seguinos en Twitter!] <
> > > http://twitter.com/#!/despegarar>
> > > > > > >> [image:
> > > > > > >> > Seguinos en Facebook!] <http://www.facebook.com/despegar>
> > > [image:
> > > > > > >> Seguinos
> > > > > > >> > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > > > >> > *Despegar.com, Inc. *
> > > > > > >> > El mejor precio para tu viaje.
> > > > > > >> >
> > > > > > >> > Este mensaje es confidencial y puede contener información
> > > > amparada
> > > > > > por
> > > > > > >> el
> > > > > > >> > secreto profesional.
> > > > > > >> > Si usted ha recibido este e-mail por error, por favor
> > > > > comuníquenoslo
> > > > > > >> > inmediatamente respondiendo a este e-mail y luego
> > eliminándolo
> > > de
> > > > > su
> > > > > > >> > sistema.
> > > > > > >> > El contenido de este mensaje no deberá ser copiado ni
> > > divulgado a
> > > > > > >> ninguna
> > > > > > >> > persona.
> > > > > > >> >
> > > > > > >>
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > >
> > > > > > > [image:
> > > > http://www.despegar.com/galeria/images/promos/isodespegar1.png
> > > > > ]
> > > > > > >
> > > > > > > *Ing. Federico Gaule*
> > > > > > > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > > > >
> > > > > > > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > > > > tel. +54 (11) 4894-3500
> > > > > > >
> > > > > > >
> > > > > > > *[image: Seguinos en Twitter!] <
> http://twitter.com/#!/despegarar
> > >
> > > > > > [image:
> > > > > > > Seguinos en Facebook!] <http://www.facebook.com/despegar>
> > [image:
> > > > > > Seguinos
> > > > > > > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > > > > *Despegar.com, Inc. *
> > > > > > >
> > > > > > > El mejor precio para tu viaje.
> > > > > > >
> > > > > > > Este mensaje es confidencial y puede contener información
> > amparada
> > > > por
> > > > > > el
> > > > > > > secreto profesional.
> > > > > > > Si usted ha recibido este e-mail por error, por favor
> > > comuníquenoslo
> > > > > > > inmediatamente respondiendo a este e-mail y luego eliminándolo
> > de
> > > su
> > > > > > > sistema.
> > > > > > > El contenido de este mensaje no deberá ser copiado ni
> divulgado
> > a
> > > > > > ninguna
> > > > > > > persona.
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > >
> > > > > > [image:
> > > http://www.despegar.com/galeria/images/promos/isodespegar1.png
> > > > ]
> > > > > >
> > > > > > *Ing. Federico Gaule*
> > > > > > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > > > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > > > tel. +54 (11) 4894-3500
> > > > > >
> > > > > > *[image: Seguinos en Twitter!] <http://twitter.com/#!/despegarar
> >
> > > > > [image:
> > > > > > Seguinos en Facebook!] <http://www.facebook.com/despegar>
> [image:
> > > > > Seguinos
> > > > > > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > > > *Despegar.com, Inc. *
> > > > > > El mejor precio para tu viaje.
> > > > > >
> > > > > > Este mensaje es confidencial y puede contener información
> amparada
> > > por
> > > > > el
> > > > > > secreto profesional.
> > > > > > Si usted ha recibido este e-mail por error, por favor
> > comuníquenoslo
> > > > > > inmediatamente respondiendo a este e-mail y luego eliminándolo
> de
> > su
> > > > > > sistema.
> > > > > > El contenido de este mensaje no deberá ser copiado ni divulgado
> a
> > > > > ninguna
> > > > > > persona.
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > >
> > > > [image:
> http://www.despegar.com/galeria/images/promos/isodespegar1.png
> > ]
> > > >
> > > > *Ing. Federico Gaule*
> > > > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > > > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > > > tel. +54 (11) 4894-3500
> > > >
> > > > *[image: Seguinos en Twitter!] <http://twitter.com/#!/despegarar>
> > > [image:
> > > > Seguinos en Facebook!] <http://www.facebook.com/despegar> [image:
> > > Seguinos
> > > > en YouTube!] <http://www.youtube.com/Despegar>*
> > > > *Despegar.com, Inc. *
> > > > El mejor precio para tu viaje.
> > > >
> > > > Este mensaje es confidencial y puede contener información amparada
> por
> > > el
> > > > secreto profesional.
> > > > Si usted ha recibido este e-mail por error, por favor comuníquenoslo
> > > > inmediatamente respondiendo a este e-mail y luego eliminándolo de su
> > > > sistema.
> > > > El contenido de este mensaje no deberá ser copiado ni divulgado a
> > > ninguna
> > > > persona.
> > > >
> > >
> >
> >
> >
> > --
> >
> > [image: http://www.despegar.com/galeria/images/promos/isodespegar1.png]
> >
> > *Ing. Federico Gaule*
> > Líder Técnico - PAM <hotels-pam-it@despegar.com>
> > Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
> > tel. +54 (11) 4894-3500
> >
> > *[image: Seguinos en Twitter!] <http://twitter.com/#!/despegarar>
> [image:
> > Seguinos en Facebook!] <http://www.facebook.com/despegar> [image:
> Seguinos
> > en YouTube!] <http://www.youtube.com/Despegar>*
> > *Despegar.com, Inc. *
> > El mejor precio para tu viaje.
> >
> > Este mensaje es confidencial y puede contener información amparada por
> el
> > secreto profesional.
> > Si usted ha recibido este e-mail por error, por favor comuníquenoslo
> > inmediatamente respondiendo a este e-mail y luego eliminándolo de su
> > sistema.
> > El contenido de este mensaje no deberá ser copiado ni divulgado a
> ninguna
> > persona.
> >
>



-- 

[image: http://www.despegar.com/galeria/images/promos/isodespegar1.png]

*Ing. Federico Gaule*
Líder Técnico - PAM <hotels-pam-it@despegar.com>
Av. Corrientes 746 - Piso 9 - C.A.B.A. (C1043AAU)
tel. +54 (11) 4894-3500

*[image: Seguinos en Twitter!] <http://twitter.com/#!/despegarar> [image:
Seguinos en Facebook!] <http://www.facebook.com/despegar> [image: Seguinos
en YouTube!] <http://www.youtube.com/Despegar>*
*Despegar.com, Inc. *
El mejor precio para tu viaje.

Este mensaje es confidencial y puede contener información amparada por el
secreto profesional.
Si usted ha recibido este e-mail por error, por favor comuníquenoslo
inmediatamente respondiendo a este e-mail y luego eliminándolo de su
sistema.
El contenido de este mensaje no deberá ser copiado ni divulgado a ninguna
persona.

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