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From Gokulakannan M <gok...@huawei.com>
Subject RE: HDFS concurrent access
Date Wed, 13 Jan 2010 08:39:21 GMT

Thanks Todd. I will try it out. 



From: Todd Lipcon [mailto:todd@cloudera.com] 
Sent: Wednesday, January 13, 2010 1:00 PM
To: hdfs-user@hadoop.apache.org; gokulm@huawei.com
Subject: Re: HDFS concurrent access


Hi Gokul,

That function doesn't exist as of yet. Your best bet is to poll for the
file's existence or use an external mechanism like ZooKeeper to communicate
and coordinate between clients.


On Tue, Jan 12, 2010 at 10:14 PM, Gokulakannan M <gokulm@huawei.com> wrote:

 I want to know whether an API exists for the following functionality.?


 One user(user1) is writing to a large file(size 100MB) and another
user(user2) wants to read that file once user1 completes the writing. So is
there an API exists for this functionality of waiting?








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