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From Raf <>
Subject RE: Input directory with multiple file consumers
Date Mon, 23 Jul 2012 14:37:14 GMT
> Is there a way to monitor the same input folder from camel
applications on different machines? I am wondering what the best
practice is on handling this situation. 


Since you logged an issue for this, you might want to know that I found
a workaround.


If you add the parameters preMove=processing&maxMessagesPerPoll=1 then
multiple servers can work on the same camel folder.


Without maxMessagesPerPoll=1, camel will scan all files in the folder
and then process them one by one. This will give errors when another
server has already processed the file while this server still thinks it
needs to be processed. This is no longer possible when
maxMessagesPerPoll=1 is used.


Without preMove=processing, the different servers will want to lock the
same file, only one gets the lock and the others are waiting to lock the
same file. With preMove=processing, each server will pick up a different
file because they no longer see the files locked by other servers.





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