hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Wei-Chiu Chuang <weic...@apache.org>
Subject Re: How to restore data from HDFS rm -skipTrash
Date Fri, 04 Aug 2017 12:57:16 GMT
If the directory has snapshot enabled, the file can be retrieved from the
past snapshots.

Otherwise, the file inodes are removed from namenode metadata, and blocks
are scheduled for deletion.
You might want to play with edit log a bit. Remove the delete entries from
edit logs. But it's hacky and does not guarantee the blocks are still there.

On Thu, Aug 3, 2017 at 8:38 PM, panfei <cnweike@gmail.com> wrote:

> ---------- Forwarded message ----------
> From: panfei <cnweike@gmail.com>
> Date: 2017-08-04 11:23 GMT+08:00
> Subject: How to restore data from HDFS rm -skipTrash
> To: CDH Users <cdh-user@cloudera.org>
> some one mistakenly do a rm -skipTrash operation on the HDFS, but we stop
> the namenode and datanodes immediately. (CDH 5.4.5)
> I want to know is there any way to stop the deletion process ?
> and how ?
> thanks very in advance.

A very happy Hadoop contributor

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message