Thanks again. I will try the steps you suggested. I will get back if I have any other doubts.
On Mon, Dec 18, 2017 at 7:49 PM, A D <[email protected]> wrote: > That is correct. > > When you bring down a RM the other two will keep the cluster up and > running and all the NMs will keep working with other two while the third > one is being upgrade. > > > On 12/18/2017 09:17 AM, Debraj Manna wrote: > > Thanks AD. > > > > When you say one at a time it means I should upgrade a ResourceManager > node > > and once it is fully upgraded and up, move to the next ResourceManager > node? > > > > On Mon, Dec 18, 2017 at 7:41 PM, A D <[email protected]> wrote: > > > >> I strongly recommend following > >> http://hadoop.apache.org/docs/r2.6.5/hadoop-project-dist/hadoop-hdfs/ > >> HdfsRollingUpgrade.html > >> for rolling upgrade. > >> > >> HBase is no different when it comes to rolling upgrade. There is no > >> special command that you need to execute. Below are the steps that I > >> would follow: > >> > >> 1. Upgrade the HDFS: > >> > >> Once HDFS upgrade is complete: > >> > >> 2. Upgrade ResourceManager nodes (one at a time). > >> 3. Upgrade NodeManagers(one at a time). > >> > >> Follow step 2 and 3 for HBase master and RegionServers. I would wait for > >> RIT to settle after shutting down a region server. > >> > >> Please refer to product documentation in case you are using a particular > >> distribution (Cloudera, MapR or Hortonworks). > >> > >> > >> On 12/18/2017 08:52 AM, Debraj Manna wrote: > >>> I am having a cluster like below > >>> > >>> > >>> - 3 Hbase Master (1 Active & 2 standby) > >>> - 4 Region Servers > >>> - 4 Data Nodes > >>> - 1 Primary & 1 Secondary Name Node > >>> - 3 Journal Node > >>> - 4 Nodemanager > >>> - 3 Resource Manager (1 Active & 2 standby) > >>> > >>> > >>> Can someone let me know how can I plan a rolling upgrade of the above > >>> cluster with minimum downtime? > >>> > >>> > >>> - Hadoop - 2.6.0 > >>> - Yarn - 2.6.0 > >>> - Hbase - 1.2.0 > >>> > >>> Thanks, > >>> > >> -- > >> Thank you, > >> A.D > >> [email protected] > >> > >> > > -- > Thank you, > A.D > [email protected] > >
