What the commands "enable_table_replication" or "disable_table_replication" do

[#1]

Hi

I would like to know if these commands disable the table before activating/deactivating the replication of families so that services using it get stuck.

I know to activate replication manually I have to first disable the table, change to "1" the colum "REPLICATION_SCOPE" and then enable again, so I would like to know if these commands do it automatically...I suppose so, but I want to be sure to calcule impact on services using the table.

Regards,

Silvio

[#2 · Accepted solution]

As long as "hbase.online.schema.update.enable" is not set to false in hbase-site.xml, this will be done without disabling the table.

[#3]

I can´t see that property explicitely defined as "False" in hbase-site.xml, so I can suppose it is True. We are using HDP 2.3.2.0-2950, wich includes HBase 1.1.2, so I think it is defined as True by default. Is it?

[#4]

Yes, the default is "true". That's why I stated my reply in the way I did. As long as you are not setting the property to false, the (default) value would be true, and thus the table would not be disabled in the process.

[#5]

Ok, thank you very much for answering 🙂