upgrades of hadoop and hbase

 

1.the match relationships between hadoop and hbase nowaday

 

  that means if you are now using hadoop1.0.x and hbase-0.94.x,and assume u want to upgrade to hadoop-2.5.x and hbase-1.0.x,the steps should be followed:

 

2.upgrade

 2.1 upgrade paths

  as described above,there are two lines to achive the upgrades:

source	target	pirority by	paths	results in	number of steps	safe upgrade
hadoop 1.0.x+hbase 94.x	hadoop-2.5.x+ hbase-1.x	hbase	a.hbase-0.94.x -> hbase-96.x b.hadoop 1.0.x -> 2.5.x c.hbase 96.x -> 1.x	--hadoop 1.0.x + hbase 96.x --hadoop 2.5.x + hbase 96.x --hadoop 2.5.x + hbase 1.0.x	3	yes
		hadoop	a.hadoop 1.0.x -> 2.5.x b.hbase 94.x -> 1.x	--hadoop 2.5.x + hbase 94.x --hadoop 2.5.x + hbsae 1.x	2	no

 

  some notices:

  1)same upgrade means that all the steps listed in lines column are named S(supported and tested)

  2)hbase upgrade  will cause certain intermediate sub-upgrades,e.g. for the Path 2,upgrades hbase from 94.x to 1.x will lead u to upgrade to 96.x first if you use rolling upgrade(i dont know whether pass if not use rolling upgrade,but i think it should be),see below 'hbase upgrade'

  

 2.2 hbase upgrade

  different startpoint or different target will results in different steps,see [1]

 2.3 hadoop upgrade

  differs from hbase,hadoop upgrade is generally fixed relatively.see [2]

 

ref:

[1] apache book:hbase upgrade

[2] wiki :hadoop upgrade

[3] hadoop and hbase support matrix

Hadoop升级方案（二）：从Hadoop 1.0升级到2.0（1）

hadoop hbase 升级