[jira] [Assigned] (HBASE-26522) Improve documentation of hbase 1.x to 2.x potential incompatibilities

["Bryan Beaudreault (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-26522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bryan Beaudreault reassigned HBASE-26522:
-----------------------------------------

    Assignee: Bryan Beaudreault

> Improve documentation of hbase 1.x to 2.x potential incompatibilities
> ---------------------------------------------------------------------
>
>                 Key: HBASE-26522
>                 URL: https://issues.apache.org/jira/browse/HBASE-26522
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Bryan Beaudreault
>            Assignee: Bryan Beaudreault
>            Priority: Minor
>
> We're working on a major upgrade of almost 900 tables across 100 production clusters (and corresponding QA environment clusters). We've upgraded about 25% of our QA environment and run into a series of incompatibilities along the way. Most of them have been easy to get around, but I wanted to create this Jira to collect them so that we can make an update to the docs for future upgraders.
> My plan is to periodically edit this description to add to the list. If anyone else has anything to contribute, feel free to edit as well or add a comment. 
> Incompatibilities to document:
> - https://issues.apache.org/jira/browse/HBASE-15676 changed the serialized byte string used for the fuzzy mask. FuzzyRowFilters created by older clients will not match any rows in an hbase2 cluster.



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