Hi Hemant,
HDFS-4213 (https://issues.apache.org/jira/browse/HDFS-4213) may be
the one you're looking for. In general, an hsync which can update the
file size on NN is enabled. You may call
"hsync(EnumSet.of(SyncFlag.UPDATE_LENGTH))" to do that.
Thanks,
-Jing
On Thu, Jul 11, 2013 at 1:38 AM, Hemant Bhanawat <hema...@vmware.com> wrote:
> Hi,
>
> Any help?
>
> Thanks in advance,
> Hemant
>
> ----- Original Message -----
>
> From: "Hemant Bhanawat" <hema...@vmware.com>
> To: hdfs-dev@hadoop.apache.org
> Sent: Tuesday, July 9, 2013 12:55:23 PM
> Subject: Regarding hsync
>
> Hi,
>
> I am currently working on hadoop version 2.0.*.
>
> Currently, hsync does not update the file size on namenode. So, if my process
> dies after calling hsync but before calling file close, the file is left with
> an inconsistent file size. I would like to fix this file size. Is there a way
> to do that? A workaround that I have come across is to open the file stream
> in append mode and close it. This fixes the file size on the namenode. Is it
> a reliable solution?
>
> Thanks,
> Hemant
>
