Tuesday, August 7, 2007

provd directory, Ivan and John

On July 8th, Ivan and John was pushing for MQ related test. Someone deleted the working directory on test machine. It was late evening and as per reply in list, Ivan and John were working at that time.

[Appendix 100] – I reported politely provd directory being deleted.

[Appendix 200] – After I reported directory being deleted I sent another mail that I would send the logs after I configure it again. Ivan replied to the email and instructed to setup another MQ server on Windows. Point to note is John who was the developer was arguing something that was not the functionality. I had reported observations against John’s point of view. And before directory was deleted I was trying to verify John’s explanation.

I believe Ivan and John were trying to fail me in assignment or make me look crazy.

APPENDIX 100


From: Anjan Bhushan
Sent: Friday, July 08, 2005 8:08 PM
To: John Clark; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

Something weired has happened. I tried to put some file from a directory to input directory. It couldn’t copy. I rebooted the server, provd directory is not there. Seems like data corruption.

Or anyone else using the same same setup?


From: John Clark
Sent: Friday, July 08, 2005 7:41 PM
To: Anjan Bhushan; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

The PS retries the recovery every 5 seconds. Are you saying that it never successfully re-establishes connectivity? You should see a log message “Re-initializing MQ runtime...” followed by “MQ initialization successful” if connectivity was re-established. If exceptions continually occur after the “Re-initializing MQ runtime...”, then perhaps the MQ Java classes are holding onto something in the VM that prevents re-connection. I’ve tried to gracefully shutdown and cleanup any MQ resources as part of failure detection, but that results in the VM hanging forever in MQ call(s).

Can you send me the log from your test?

JohnC-


From: Anjan Bhushan
Sent: Friday, July 08, 2005 7:08 PM
To: John Clark; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

Thanks John. In WAS behavior is different, probably because of connection Pooling?

But just verified doing so, it doesn’t recover. Also I remember multiple time when I had to take care of MQ and WAS, each time I restarted MQ provisioning server was being restarted by users.

Am I missing something John?


From: John Clark
Sent: Friday, July 08, 2005 7:01 PM
To: Anjan Bhushan; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

As part of recovery, I tear everything down and re-establish the QueueConnection, Session, QueueReceiver, QueueSender, and Queues.

JohnC-


From: Anjan Bhushan
Sent: Friday, July 08, 2005 5:59 PM
To: Ivan Ho; John Clark
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

Sure Ivan. I think answer should be no. As provisioning server will have session open.

I may be wrong.


From: Ivan Ho
Sent: Friday, July 08, 2005 5:54 PM
To: John Clark
Cc: Anjan Bhushan; Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: MQ restarts

Hi John,

If the Provisioning Server is running and MQ was restarted, would the ProvServer recover from that restart?

Anjan, please add this to your exception testing…

Thx,

Ivan

==========================

Ivan Ho (iho@evidentsoftware.com)

Director of Engineering

Evident Software, Inc.

Tel: 973-338-2300x251

==========================

THIS TRANSMISSION CONTAINS CONFIDENTIAL AND/OR LEGALLY PRIVILEGED INFORMATION INTENDED ONLY FOR THE USE OF THE INDIVIDUALS NAMED IN THIS MESSAGE. IF YOU ARE NOT THE INTENDED RECIPIENT, YOU ARE HEREBY NOTIFIED THAT ANY DISCLOSURE, COPYING, DISTRIBUTION OR THE TAKING OF ANY ACTION IN RELIANCE ON THE CONTENTS OF THIS E-MAIL TRANSMISSION IS STRICTLY PROHIBITED. IF YOU HAVE RECEIVED THIS TRANSMISSION IN ERROR, PLEASE NOTIFY US IMMEDIATELY SO THAT WE CAN ARRANGE FOR THE RETURN OF THE DOCUMENTS TO US AT NO COST TO YOU.

Appendix 200


From: Ivan Ho
Sent: Friday, July 08, 2005 8:15 PM
To: Anjan Bhushan; John Clark
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

Anjan, if you’re planning to do more MQ restarts, can you setup another MQ server on a window’s box? I don’t want to interrupt 10.1.0.132 since others are using this for their testing.

Thx

-Ivan


From: Anjan Bhushan
Sent: Friday, July 08, 2005 8:12 PM
To: John Clark; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

Will setup again and will send the log as well.


From: John Clark
Sent: Friday, July 08, 2005 7:41 PM
To: Anjan Bhushan; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

The PS retries the recovery every 5 seconds. Are you saying that it never successfully re-establishes connectivity? You should see a log message “Re-initializing MQ runtime...” followed by “MQ initialization successful” if connectivity was re-established. If exceptions continually occur after the “Re-initializing MQ runtime...”, then perhaps the MQ Java classes are holding onto something in the VM that prevents re-connection. I’ve tried to gracefully shutdown and cleanup any MQ resources as part of failure detection, but that results in the VM hanging forever in MQ call(s).

Can you send me the log from your test?

JohnC-


From: Anjan Bhushan
Sent: Friday, July 08, 2005 7:08 PM
To: John Clark; Ivan Ho
Cc: Shao-Min Sun; Jeyashree Chidambaram; Anand Nanjunda Swamy
Subject: RE: MQ restarts

Thanks John. In WAS behavior is different, probably because of connection Pooling?

But just verified doing so, it doesn’t recover. Also I remember multiple time when I had to take care of MQ and WAS, each time I restarted MQ provisioning server was being restarted by users.

Am I missing something John?

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