We are seeing a warning deep in HDFS code, I was wondering if anyone knows of
this or if a JIRA has been filed or fixed? Searching on the warning text
didn't crop up anything. It is not harmful AFAIK.
John
[Dynamic-linking native method java.net.NetworkInterface.init ... JNI]
WARNING in
We have been seeing some of the disks on our cluster having bad blocks, and
then failing. We are using some dell PERC H700 disk controllers that create
virtual devices.
Our hosting manager uses a dell utility which reports virtual device bad
blocks. He has suggested that we use the dell tool to
Hadoop 2.4.0 mentions that FSImage is stored using protobuf. So upgrade
from 2.3.0 to 2.4 would work since 2.4 can read old (2.3) binary format and
write the new 2.4 protobuf format.
After using 2.4, if there is a need to downgrade back to 2.3, how would
that work ?
Thanks,
On Thu, Oct 16, 2014 at 7:03 PM, Colin Kincaid Williams disc...@uw.edu
wrote:
We have been seeing some of the disks on our cluster having bad blocks,
and then failing. We are using some dell PERC H700 disk controllers that
create virtual devices.
Are you doing a bunch of single-disk RAID0
For some reason he seems intent on resetting the bad Virtual blocks, and
giving the drives another shot. From what he told me, nothing is under
warranty anymore. My first suggestion was to get rid of the disks.
Here's the command:
/opt/dell/srvadmin/bin/omconfig storage vdisk
On Thu, Oct 16, 2014 at 10:01 PM, Colin Kincaid Williams disc...@uw.edu
wrote:
For some reason he seems intent on resetting the bad Virtual blocks, and
giving the drives another shot. From what he told me, nothing is under
warranty anymore. My first suggestion was to get rid of the disks.
Hi Travis,
Thanks for your input. I forgot to mention that the drives are most likely
in the single drive configuration that you describe.
I think what I've found is that restarting the datanodes in the manner I
describe shows that the mount points on the drives with the reset blocks
and newly
