Yes. On Wed, May 13, 2015 at 9:40 AM, Ted Yu <[email protected]> wrote:
> Have you enabled short circuit read ? > > Cheers > > On Wed, May 13, 2015 at 9:37 AM, rahul malviya <[email protected] > > > wrote: > > > Hi, > > > > I have recently started running MR on hbase snapshots but when the MR is > > running there is pretty high CPU usage on datanodes and I start seeing IO > > wait message in datanode logs and as soon I kill the MR on Snapshot > > everything come back to normal. > > > > What could be causing this ? > > > > I am running cdh5.2.0 distribution. > > > > Thanks, > > Rahul > > >
