Re: HBase increment of a specific cell version

Hi Stack, Thanks for the response, I am trying to maintain an hourly count of messages between two keys/entities: Sender->recipient E.g. a->b There are multiple ways of modelling this, but one that seems to fit nicely is: Row key = a Col = b Timestamp/version= e.g hour-of-day or hour-of-epoch

Inconsistent count between HBase shell count and custom Map reduce row counter run on snapshot of same table

Hi All, The HBase shell count command run on a table is giving a different count than the custom map reduce row counter job ran on snapshot of same table. This is a custom row counter written by us which is similar to HBase default map reduce row counter, the only difference is that our job

Re: HBase increment of a specific cell version

Hello Alex. We don't have such an ability. Can you say what the use case is because I at least am having trouble understanding why you would want to do such a thing. Thank you, S On Wed, Dec 13, 2017 at 2:07 PM, Alex Loffler wrote: > Hi Folks, > > I am using the HBase’s

Re: How to do rolling upgrade of a hadoop cluster with hbase?

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 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

Re: How to do rolling upgrade of a hadoop cluster with hbase?

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

Re: How to do rolling upgrade of a hadoop cluster with hbase?

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 wrote: > I strongly recommend following >

Re: How to do rolling upgrade of a hadoop cluster with hbase?

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

How to do rolling upgrade of a hadoop cluster with hbase?

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