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From: Harsh J <harsh@cloudera.com>
Date: Fri, 22 Feb 2013 11:33:25 +0530
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 <CAOcnVr0SZEfN+9DhasP1o6SbNT4kf6pfY45uF-sH6-ATwRcxSg@mail.gmail.com>
Subject: Re: Locks in HDFS
To: "cdh-user@cloudera.org" <cdh-user@cloudera.org>
Cc: "common-user@hadoop.apache.org" <common-user@hadoop.apache.org>
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HDFS does not have such a client-side feature, but your applications
can use Apache Zookeeper to coordinate and implement this on their own
- it can be used to achieve distributed locking. While at ZooKeeper,
also checkout https://github.com/Netflix/curator which makes using it
for common needs very easy.

On Fri, Feb 22, 2013 at 5:17 AM, abhishek <abhishek.dodda1@gmail.com> wrote:
>
>> Hello,
>
>> How can I impose read lock, for a file in HDFS
>>
>> So that only one user (or) one application , can access file in hdfs at any point of time.
>>
>> Regards
>> Abhi
>
> --
>
>
>


--
Harsh J