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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » File Input Scan Delay

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kirank
PostPosted: Mon Oct 24, 2011 2:52 pm    Post subject: File Input Scan Delay Reply with quote

Centurion

Joined: 10 Oct 2002
Posts: 136
Location: California
Hi,

I have FileInput node which connects to a remote directory via FTP to read a file. The FTP Configurable service is configured with a Scan Delay of 1 Sec. So I am expecting the File node to grab files every second. However I am seeing that the File continues to sit on the Input directory for few seconds and doesn't seem to be honoring scan delay set on the configurable service. We are on WMB 7.0.0.0 on AIX. Has anybody seen this problem?

Regards

Kiran
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fjb_saper
PostPosted: Mon Oct 24, 2011 7:36 pm    Post subject: Re: File Input Scan Delay Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
kirank wrote:
Hi,

I have FileInput node which connects to a remote directory via FTP to read a file. The FTP Configurable service is configured with a Scan Delay of 1 Sec. So I am expecting the File node to grab files every second. However I am seeing that the File continues to sit on the Input directory for few seconds and doesn't seem to be honoring scan delay set on the configurable service. We are on WMB 7.0.0.0 on AIX. Has anybody seen this problem?

Regards

Kiran

How do you know that the scan delay is not honored? Are you sure that the file handles have all been closed and the file is writable / movable when you think that it is just sitting there? Also upgrade to WMB 7.0.0.2 or better 7.0.0.3
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mqjeff
PostPosted: Tue Oct 25, 2011 1:44 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447
In the general case, the problem of determining if a file is ready to be read or moved is Turing complete. It is the same as the Halting Problem - "Has the program that is writing the file halted?".

A 1 second delay is very optimistic.
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