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From Deepak Shetty <>
Subject Re: Multiple threads reading/writing to one file
Date Wed, 09 Feb 2011 04:02:40 GMT
I dont think there is an out of the box way to do what you want - If you
have java experience you could do this.

I cant help but feel that there is probably a simpler way - perhaps you
should frame what script you want to run and why you want to do the below.
(for e.g. couldnt the thread that gets the new customer id , simply continue
with that data , rather than writing it to a file and then looking for some
other thread to pick it up) or must this reading writing reading happen in

On Tue, Feb 8, 2011 at 7:21 PM, rats123 <> wrote:

> Hi,
> I'm trying to find the best way to deal with multiple threads reading from
> and writing to one file. Basically I have a file that contains some
> customer
> ids. Sometimes a thread will need to read a line from the file and
> sometimes
> it will need to write a new customer id to the file. Also once a line has
> been read it cannot be used so I need to read the next line in the file.
> I know the CSV dataset config allows a one time load of a file and will
> handle the line by line reading of the file. But this is no good to me as
> more data will be added to the file and the threads will need access to
> this
> data later on.
> Any help will be most appreciated.
> Thanks.
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