[Swift-user] coaster reply timeout heartbeats

[Allan Espinosa]

2010/10/21 Mihael Hategan <hategan at mcs.anl.gov>:
> Heartbeats are a way to establish (within a certain interval of time)
> that the connection is still alive.

So at some point, the client's connection with the coaster service got cut here?

>
> Only one side needs to send heartbeats, and they should be replied to
> without question.
>
> A client detects a bad connection when no reply is received to a
> heartbeat. The "passive" side detects a bad connection when no heartbeat
> has been received in 2*the interval.

By "passive" side you mean the coaster service?

>
> On Thu, 2010-10-21 at 17:51 -0500, Allan Espinosa wrote:
>> Hi,
>>
>> Do the HEARTBEAT timeouts occur because the swift client is expecting
>> them by default but the coaster service has it disabled by default?
>>
>> Below are the logs that gave me the idea.
>>
>> Swift client:
>> 2010-10-21 10:49:56,404-0500 WARN  Command Command(6761, HEARTBEAT):
>> handling reply timeout; sendReqTime=101021-104756.388,
>> sendTime=101021-104756.388, now=101021-104956.404
>> 2010-10-21 10:49:56,404-0500 INFO  Command Command(6761, HEARTBEAT): re-sending
>> 2010-10-21 10:49:56,404-0500 WARN  Command Command(6761,
>> HEARTBEAT)fault was: Reply timeout
>> org.globus.cog.karajan.workflow.service.ReplyTimeoutException
>>         at org.globus.cog.karajan.workflow.service.commands.Command.handleReplyTimeout(Command.java:280)
>>         at org.globus.cog.karajan.workflow.service.commands.Command$Timeout.run(Command.java:285)
>>         at java.util.TimerThread.mainLoop(Timer.java:512)
>>         at java.util.TimerThread.run(Timer.java:462)
>> 2010-10-21 10:49:56,588-0500 INFO  GSSChannel Connected to
>> https://communicado.ci.uchicago.edu:61999
>> 2010-10-21 10:49:56,588-0500 INFO
>> AbstractStreamKarajanChannel$Multiplexer (1) Scheduling
>> GSSCChannel-https://communicado.ci.uchicago.edu:61999(6)[1543987498:
>> {}] for addition
>>
>> Persistent service (passive workers):
>> Local contacts: [http://128.135.125.17:60999]
>> Started local service: http://128.135.125.17:60999
>> Started coaster service: https://128.135.125.17:61999
>> Started coaster service: https://128.135.125.17:61999
>> GSSSChannel-null(0)[1205215856: {}]: Disabling heartbeats (config is null)
>> Multiplexer 0 started
>> (1) Scheduling GSSSChannel-null(1)[1205215856: {}] for addition
>> nullChannel started
>> Multiplexer 1 started
>> Channel id: u-5410312-12bd0f72d5e--8000-u1d283670-12bd0f72d69--8000
>> MetaChannel: 409971196[1205215856: {}] -> null: Disabling heartbeats
>> (disabled in config)
>> MetaChannel: 409971196[1205215856: {}] -> null.bind ->
>> GSSSChannel-null(1)[1205215856: {}]
>> Sending Command(1, RLOG) on GSSSChannel-null(1)[1205215856: {}]
>> Plan time: 1
>> Plan time: 1
>> Plan time: 1
>> Plan time: 1
>>
>>
>
>
>
>



-- 
Allan M. Espinosa <http://amespinosa.wordpress.com>
PhD student, Computer Science
University of Chicago <http://people.cs.uchicago.edu/~aespinosa>