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Posted to hdfs-user@hadoop.apache.org by Manu S <ma...@gmail.com> on 2012/05/03 10:15:09 UTC
How to fetch the block names from fsimage/edits file?
Hi All,
Can we find out the complete block names from the fsimage we have?
Scenario:
Accidentally we had lost the hdfs data. We have the previous fsimage before
the data loss. We have restored some data using some data recovery tools.
The recovered files are starting with *blk_<string>*. I read the fsimage
using *strings *command, but that doesn't give the block name details.
Thanks,
Manu S
Re: How to fetch the block names from fsimage/edits file?
Posted by JunYong Li <li...@gmail.com>.
use $HADOOP_HOME/bin/hadoop ovi command
2012/5/3 Manu S <ma...@gmail.com>
> Hi All,
>
> Can we find out the complete block names from the fsimage we have?
>
> Scenario:
> Accidentally we had lost the hdfs data. We have the previous fsimage before
> the data loss. We have restored some data using some data recovery tools.
> The recovered files are starting with *blk_<string>*. I read the fsimage
> using *strings *command, but that doesn't give the block name details.
>
> Thanks,
> Manu S
>
--
Regards
Junyong
RE: How to fetch the block names from fsimage/edits file?
Posted by Amith D K <am...@huawei.com>.
Use
$HADOOP_HOME/bin/hdfs oiv/oie
in 0.23 and above versions
________________________________________
From: JunYong Li [lijy83@gmail.com]
Sent: Thursday, May 03, 2012 5:04 PM
To: common-user@hadoop.apache.org
Subject: Re: How to fetch the block names from fsimage/edits file?
use $HADOOP_HOME/bin/hadoop ovi
2012/5/3 Manu S <ma...@gmail.com>
> Hi All,
>
> Can we find out the complete block names from the fsimage we have?
>
> Scenario:
> Accidentally we had lost the hdfs data. We have the previous fsimage before
> the data loss. We have restored some data using some data recovery tools.
> The recovered files are starting with *blk_<string>*. I read the fsimage
> using *strings *command, but that doesn't give the block name details.
>
> Thanks,
> Manu S
>
--
Regards
Junyong
Re: How to fetch the block names from fsimage/edits file?
Posted by JunYong Li <li...@gmail.com>.
use $HADOOP_HOME/bin/hadoop ovi
2012/5/3 Manu S <ma...@gmail.com>
> Hi All,
>
> Can we find out the complete block names from the fsimage we have?
>
> Scenario:
> Accidentally we had lost the hdfs data. We have the previous fsimage before
> the data loss. We have restored some data using some data recovery tools.
> The recovered files are starting with *blk_<string>*. I read the fsimage
> using *strings *command, but that doesn't give the block name details.
>
> Thanks,
> Manu S
>
--
Regards
Junyong
Re: How to fetch the block names from fsimage/edits file?
Posted by JunYong Li <li...@gmail.com>.
use $HADOOP_HOME/bin/hadoop ovi
2012/5/3 Manu S <ma...@gmail.com>
> Hi All,
>
> Can we find out the complete block names from the fsimage we have?
>
> Scenario:
> Accidentally we had lost the hdfs data. We have the previous fsimage before
> the data loss. We have restored some data using some data recovery tools.
> The recovered files are starting with *blk_<string>*. I read the fsimage
> using *strings *command, but that doesn't give the block name details.
>
> Thanks,
> Manu S
>
--
Regards
Junyong