Yes, I know the which block is corrupted and want to rewrite the content of
the block. (asuming the replication factor of the related file is 1)
On Fri, Nov 9, 2012 at 12:33 PM, Steve Loughran wrote:
> On 9 November 2012 17:37, Vivi Lang wrote:
>
> > thxs for the replying,
> &
her, arbitrary block?) though?
>
> On Fri, Nov 9, 2012 at 7:19 AM, Vivi Lang >
> wrote:
> > Sorry, I found the previous one is full of typo and hard to understand. I
> > will clarify my question:
> >
> > If I have got a inputstream in a datanode (and this stream contains
this block to replace another
exsiting block of one file that already stored in the HDFS), can anyone
tell me which is the easiest way to do this?
Thanks,
On Thu, Nov 8, 2012 at 5:15 PM, Vivi Lang wrote:
> Hi all,
>
> If I want have get a inputstream in a datanode (and this s
Please ignore the previous email which I did not describe the problem
clearly.
On Wed, Oct 31, 2012 at 3:05 PM, Vivi Lang wrote:
> Hi, thks for the replying.
>
> Is there any function can help me to create a InputStream for a certain
> Block which stored in a certain datanode
>
t; opening a file for read (with FileSystem.open API, etc.) with an
> offset and length set to to match that of a block, will open and read
> only that block.
>
> On Sat, Oct 27, 2012 at 2:19 AM, Vivi Lang wrote:
> > Hi guys,
> >
> > I am writing a program which need
Hi all,
Is there anyone who can tell me that when we lanuch a mapreduce task, for
example, wordcount, after the JobClient obtained the block locations (the
related hosts/datanodes are stored in the specified split), which
function/class will be called for reading those blocks from the datanode?
T
Thanks but I found that BlockPlacementPolicy only appear after 0.21.0? Is
there any similar class or function appeared in 0.20.
On Fri, Aug 24, 2012 at 6:03 PM, Andy Isaacson wrote:
> On Fri, Aug 24, 2012 at 3:33 PM, wei xu wrote:
> > I am doing some research on the data placement, but I am no
