Hi, Kudu requires the machine clock of master and tablet servers nodes is synchronized using NTP : https://kudu.apache.org/docs/troubleshooting.html#ntp Kudu is tested with ntpd, but I guess chronyd might work as well. Whether using ntpd or chronyd, it's necessary to make sure the machine's clock is synchronized so ntp_adjtime() Linux system call doesn't return an error (see http://man7.org/linux/man-pages/man2/adjtimex.2.html for more technical details). It's not enough just to have ntpd (or chronyd) running. It's necessary to make sure the clock is synchronized. I would verify that the NTP daemon is properly configured and tracks the clocks of the reference servers. For the instructions to check the sync status of machine's clock, see https://kudu.apache.org/docs/troubleshooting.html#ntp if using ntpd or https://docs.fedoraproject.org/en-US/Fedora/18/html/System_Administrators_Guide/sect-Checking_if_chrony_is_synchronized.html for chronyd. Hope this helps, Alexey
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