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Posted to issues@hbase.apache.org by "Duo Zhang (JIRA)" <ji...@apache.org> on 2018/06/29 12:48:00 UTC

[jira] [Updated] (HBASE-19997) [rolling upgrade] 1.x => 2.x

     [ https://issues.apache.org/jira/browse/HBASE-19997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang updated HBASE-19997:
------------------------------
    Release Note: Now we have a 'basically work' solution for rolling upgrade from 1.4.x to 2.x. Please see the "Rolling Upgrade from 1.x to 2.x" section in ref guide for more details.  (was: Now we have a basically work solution for rolling upgrade from 1.4.x to 2.x. Please see the "Rolling Upgrade from 1.x to 2.x" section in ref guide for more details.)

> [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
>            Assignee: Duo Zhang
>            Priority: Blocker
>             Fix For: 2.1.0
>
>         Attachments: Screenshot from 2018-05-03 14-43-46.png
>
>
> 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.



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