Skew in time between nodes is highly confusing, even if not a problem to the runtime. I'd strongly recommend running a time sync service for operational sanity.
On Wed, Jun 5, 2013 at 8:41 AM, Chris Embree <[email protected]> wrote: > Yes, NTPD is your best option. > > On 6/4/13, Ben Kim <[email protected]> wrote: >> Hi, >> This is very basic & fundamental question. >> >> Is time among all nodes needs to be synced? >> >> I've never even thought of timing in hadoop cluster but recently >> experienced my servers going out of sync with time. I know hbase requires >> time to by synced due to its timestamp action. But I wonder any of hadoop >> functionality requires time sync. Perhaps checkpoint, namenode HA, or >> datanode report, etc... hmm >> >> >> -- >> >> *Benjamin Kim* >> *benkimkimben at gmail* >> -- Harsh J
