２。hbase CRUD--Put operations(client)

flow:

 

 

 

FAQ:

-why META table can not be splited?

if u try to split the table 'meta',u will see the warn log :

  Cannot split meta regions in HBase 0.20 and above

i dont know how this case at first,as the root store the meta table regions keys,and if meta cant be splited,what is cause of the 'root' existance?

after review HBase读书笔记2 and Disable META splitting in 0.20,i got it.

as that sayed,this is used for support big data as a Reserved option for later usage.