-Re: Odd WARN in hbase 0.94.2
Kevin O'dell 2013-03-06, 20:43
One of engineers wanted me to pass this recommendation along:
The issue here is mostly likely a missing configuration.
We need to have this configuration on both the DataNode and RegionServer:
In CDH4.1 and earlier, the DN didn't need to be configured to use SCR,
so most likely he does not have dfs.client.read.shortcircuit set in
hdfs-site.xml. Adding that should fix it
On Tue, Mar 5, 2013 at 5:17 PM, Bryan Beaudreault
> Yep we do have that property set to that value. The file does not seem to
> exist when I try ls'ing it myself. I'm not sure where it comes from or how
> it should be created.
> On Tue, Mar 5, 2013 at 4:35 PM, Kevin O'dell <[EMAIL PROTECTED]
> > Bryan,
> > What permissions did you set for the SCRs? The DNs need
> > <property>
> > <name>dfs.datanode.data.dir.perm</name>
> > <value>755</name>
> > </property>
> > On Tue, Mar 5, 2013 at 4:28 PM, Bryan Beaudreault
> > <[EMAIL PROTECTED]>wrote:
> > > We are running hbase 0.94.2, cdh4.2 edition. We have the local read
> > > shortcut enabled. Since updating to this version I've seen a bunch of
> > WARN
> > > messages corresponding to exceptions trying to connect to what looks
> > > the local DN.
> > >
> > > As far as I can tell it doesn't appear to be having much affect on the
> > > but it'd be nice to clear it up and know for sure that it doesn't
> > indicate
> > > some problem. Has anyone ever seen this and know what it is or how to
> > > it?
> > >
> > > http://pastebin.com/PA6Y9pJN
> > >
> > > Thanks!
> > >
> > --
> > Kevin O'Dell
> > Customer Operations Engineer, Cloudera
Customer Operations Engineer, Cloudera