stack created HBASE-19997: ----------------------------- Summary: [rolling upgrade] 1.x => 2.x Key: HBASE-19997 URL: https://issues.apache.org/jira/browse/HBASE-19997 Project: HBase Issue Type: Umbrella Reporter: stack Fix For: 2.0.0
An umbrella issue of issues needed so folks can do a rolling upgrade from hbase-1.x to hbase-2.x. (Recent) Notables: * hbase-1.x can't read hbase-2.x WALs -- hbase-1.x doesn't know the AsyncProtobufLogWriter class used writing the WAL -- see https://issues.apache.org/jira/browse/HBASE-19166?focusedCommentId=16362897&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16362897 for exception. ** Might be ok... means WAL split fails on an hbase1 RS... must wait till an hbase-2.x RS picks up the WAL for it to be split. * hbase-1 can't open regions from tables created by hbase-2; it can't find the Table descriptor. See https://issues.apache.org/jira/browse/HBASE-19116?focusedCommentId=16363276&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16363276 ** This might be ok if the tables we are doing rolling upgrade over were written with hbase-1. -- This message was sent by Atlassian JIRA (v7.6.3#76005)