hive-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Biswajit Nayak <biswajit.na...@inmobi.com>
Subject Re: HDFS file system size issue
Date Mon, 14 Apr 2014 03:01:01 GMT
Hi Saumitra,

Could you please check the non-dfs usage. They also contribute to filling
up the disk space.



~Biswa
-----oThe important thing is not to stop questioning o-----


On Mon, Apr 14, 2014 at 1:24 AM, Saumitra <saumitra.official@gmail.com>wrote:

> Hello,
>
> We are running HDFS on 9-node hadoop cluster, hadoop version is 1.2.1. We
> are using default HDFS block size.
>
> We have noticed that disks of slaves are almost full. From name node's
> status page (namenode:50070), we could see that disks of live nodes are 90%
> full and DFS Used% in cluster summary page  is ~1TB.
>
> However hadoop dfs -dus / shows that file system size is merely 38GB.
> 38GB number looks to be correct because we keep only few Hive tables and
> hadoop's /tmp (distributed cache and job outputs) in HDFS. All other data
> is cleaned up. I cross-checked this from hadoop dfs -ls. Also I think
> that there is no internal fragmentation because the files in our Hive
> tables are well-chopped in ~50MB chunks. Here are last few lines of hadoop fsck
> / -files -blocks
>
> Status: HEALTHY
>  Total size: 38086441332 B
>  Total dirs: 232
>  Total files: 802
>  Total blocks (validated): 796 (avg. block size 47847288 B)
>  Minimally replicated blocks: 796 (100.0 %)
>  Over-replicated blocks: 0 (0.0 %)
>  Under-replicated blocks: 6 (0.75376886 %)
>  Mis-replicated blocks: 0 (0.0 %)
>  Default replication factor: 2
>  Average block replication: 3.0439699
>  Corrupt blocks: 0
>  Missing replicas: 6 (0.24762692 %)
>  Number of data-nodes: 9
>  Number of racks: 1
> FSCK ended at Sun Apr 13 19:49:23 UTC 2014 in 135 milliseconds
>
>
> My question is that why disks of slaves are getting full even though there
> are only few files in DFS?
>

-- 
_____________________________________________________________
The information contained in this communication is intended solely for the 
use of the individual or entity to whom it is addressed and others 
authorized to receive it. It may contain confidential or legally privileged 
information. If you are not the intended recipient you are hereby notified 
that any disclosure, copying, distribution or taking any action in reliance 
on the contents of this information is strictly prohibited and may be 
unlawful. If you have received this communication in error, please notify 
us immediately by responding to this email and then delete it from your 
system. The firm is neither liable for the proper and complete transmission 
of the information contained in this communication nor for any delay in its 
receipt.

Mime
View raw message